Arduino wifi shield help.

[shykitten55]

Hi folks.

Hope Santa was good to you all.

I just bought this:

Jaycar wifi shield.

But seem to be missing how to get it working.

I've read all the posts and people asking how to get it working.

Has anyone here got one and know how to get it working and not mind helping me?

I'm guessing that I need to put "straps" (jumpers) on the shield so it connects to the arduino.

Putting aside that the sketches won't upload, I have tried a few times and I can't get a reply from any AT command.
But not having any "straps" on the shield wouldn't help.

But all the docs I have found have the wrong names/labels for what to strap to what.


Anyway, thanks in advance.

[Brett]

If you take a look at one of their example projects that use it, you should have everything you need....

https://www.jaycar.com.au/wifi-notifier for example. 

[Cat]

Yeah, thanks Brett, but I think something was lost in translation.

I opted for the remote power point rather than an e-mail notifier.

Only that I wanted to keep it as simple as possible.

Reading the manual the wifi name is not correct.

It comes up as AI_THINKER_D4950Fand there is no password.

I can't get to the 192.168.4.1 web page - though I am connected to it via wifi.

With the arduino plugged i to the computer and I open the "debug" window, and send AT+RST<CR/LF> Nothing happens.

Though I said CR/LF, it is as how the IDE says.

But reading the specs, it wants/states them the other way around.

Dunno if that will make a difference or it is just a typo.

I can't get it to communicate, other than transmit it SSID.

I can connect - as said - but no password is needed - but I can't connect to the GUI on the shield.

Reading more stuff, I need to update to version 1.1 of the software.

I'm stuck there too, as I don't have FTDI cables or even understand what to do realy.

Sorry, gotta go.

This was a quick post on what is going on and an update.

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[Kris]

Try using the enter key instead of typing Cr/LF

I think you can use an Arduino as a serial port to update the firmware, if not, we have them at the space.

---

From: Cat <fuzzywuzzy.dog@gmail.com>
Sent: 29 December 2017 07:27:40 GMT+11:00
To: sydney-h...@googlegroups.com
Subject: Re: [RnD] Re: Arduino wifi shield help.

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Sent from my Android device with K-9 Mail. Please excuse my brevity.

[Cat]

I am not having any luck.  :(

If I bring my laptop and the arduino and shield today would there be a chance someone could help me today?

On 29 December 2017 at 07:41, Kris <kr...@sleepingplanet.com> wrote:

Try using the enter key instead of typing Cr/LF

I think you can use an Arduino as a serial port to update the firmware, if not, we have them at the space.

---

From: Cat <fuzzywuzzy.dog@gmail.com>
Sent: 29 December 2017 07:27:40 GMT+11:00

To: sydney-hackspace@googlegroups.com

[Lewys Martin]

im there now, if you bring it in i can take a look with you

On Saturday, December 30, 2017 at 9:16:29 AM UTC+11, shykitten55 wrote:

I am not having any luck.  :(

If I bring my laptop and the arduino and shield today would there be a chance someone could help me today?

On 29 December 2017 at 07:41, Kris <kr...@sleepingplanet.com> wrote:

Try using the enter key instead of typing Cr/LF

I think you can use an Arduino as a serial port to update the firmware, if not, we have them at the space.

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[Cat]

thanks.

not wanting to sound difficult but do I need to bring anything else?   (computer etc)

just that only bringing the arduino and shield would be a lot easier.

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[Cat]

dont worry bringing computer.    sorry.

[Cat]

I moved a few more squares along.  but ran into another unknown command error.

(make -f ...... )

make not a recognised command.

seems there is a lot of stuff "missing".

I would feel happier having someone helping me so I think it would be safer for me to come back Tuesday evening.

Could you please let me know when, so I know when to come the the space.

[Lewys Martin]

You'll need a version of make installed to run that, probably easier in a Linux environment if you have one you can bring 

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[Jaz]

FWIW I've been using the NodeMCU / Wemos D1 Mini stuff for a while. Same chip but you just run Arduino code natively on it. You only get 6 and a half working IO pins though. (I2C peripherals are your friend).

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[shykitten55]

Hi Jaz, Lewys,

Sorry I have been quiet.

Something happened and I had to go away for a few days.

Back and still wanting to get the shield working.

So to recap:  I need to get and compile the latest drivers for said shield.
But I'm confused why it isn't already out there to download.

Anyway, I'm back and would like to move a couple more squares towards completion so I can use it.

Again:
Thanks in advance.

[Madox]

Curiously, why do you say 6 and a half? There are plenty on both the nodemcu and wemos d1?

[Lewys Martin]

wemos d1 mini has 1 analog pin, 9 digital pins, nodemcu 1.0 has 1 analog and 11 digital pins 

On Mon, Jan 8, 2018 at 9:06 PM, Madox <mado...@gmail.com> wrote:

Curiously, why do you say 6 and a half? There are plenty on both the nodemcu and wemos d1?

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Regards,

 

Lewys Martin

[Lewys Martin]

Try using one of these instructables: 

http://www.instructables.com/id/ESP8266-as-Arduino/

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Regards,

 

Lewys Martin

[Jaz]

On the Wemos you can't use the wake pin because it is like holding down the reset button. You can use D3 but it must be open circuit when you power on (the 'half'). And I don't use the TX pin so I can debug.

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[shykitten55]

It's been a while, but I'm back.

So putting aside the problem flashing the shield's software, I just thought I would ask about what I "need" for my wifi projects:

Sorry, just other things happening, and I am not getting major parts of what is needed.

I'm wanting to stick to the Arduino IDE as much as possible.

Is this good:

https://www.banggood.com/Geekcreit-Doit-NodeMcu-Lua-ESP8266-ESP-12E-WIFI-Development-Board-p-985891.html?rmmds=search&cur_warehouse=USA

I got it from this page:
https://www.banggood.com/search/8266.html

I picked that one as a nominal starting point.


Thanks in advance.

[Lewys Martin]

Yes that is good !

[Kris]

Yup!
Though you do need the big bread boards to work with them easily.
I think we might have one at the space of you want to play, on the shelf above the solder station is a box marked esp8266

---

From: Lewys Martin <countp...@gmail.com>
Sent: 29 January 2018 21:03:36 GMT+11:00

To: sydney-h...@googlegroups.com
Subject: Re: [RnD] Re: Arduino wifi shield help.

[shykitten55]

Thanks.

So all I need to do when I get them (one) is add a bit of stuff to the "additional boards" part of the prefs and all will/should work.

Again:   Thanks in advance.

[Lewys Martin]

Yep, you added it already if using the same computer

[shykitten55]

I received 5 of the 8266 boards today.

Woo Hoo!

I copied the line for the board into/onto the RPI - preferred machine.

As it is an 8266 wifi board, I downloaded the library from:  From where I got the library.

I have the latest IDE on the RPI too - as with the laptop - and I think I got the libraries installed.
(It is annoying - kind of - but the name of the library directory is not shown in the archive, but anyway......)

Anyway, as this is a whole new board - now a shield - I am stuck at what to call it when programming it.
And all those new/extra options.

Nice if you know what they are/mean, but slightly off putting to me when I am not up to speed with all that stuff.

I'm trying to get the BasicTest loaded, but I'm not sure what settings need to be set.

Sorry can't get screen capture when the menu is active, so I can't show you that which confuses me.

Please....

A bit of help on what it all means.

[Brett]

Got a phone with a camera ? It's perfect for screenshots when you can't use the OS to do it :) 

[Lewys Martin]

Its the same as any other board

If you got a NodeMCU 1.0, on Arduino go tools>board> and select NodeMCU 1.0

If you got an Arduino mega you would select mega in the list

Very easy

No need to change other options

Then just upload a sketch as normal, can I suggest, Examples>Basic>Blink ?

[Cat]

Thanks guys for the replies.

I've shuffled along a bit since.

This link has been handy.
https://www.seeed.cc/Programming-ESP8266-ESP-12E-NodeMCU-Using-Arduino-IDE-p-1724.html

But even then, I'm confused.

I select the ModeMCU 1.0(ESP-12E module) and it "works".

I can send the BLINK sketch to the board and all is good.

But then when it comes to the wifi stuff, there is disparity/incongruity.

The supplied sketches with the library seem to "fail" in the same way:
1:
#include "SoftwareSerial.h"
SoftwareSerial mySerial1(6, 7); // RX, TX

Yeah, ok there was a problem with the "softwareserial" library I had with the older IDE and the new one with the new IDE.

I got rid of tthe older version and that kind of helped.

That is resolved, but Pins 6 & 7.

On the link I posted, if you expand the "pin mapping" part, pin 6 is NOT a comms pin.

Pins 7 & 8 are, so I don't know if that is a problem or not.

Either way, when I load the sketch neither way gets a reply from the wifi part.

Also, on the SoftwareSerial" thingy:
2:

The original sketch was more:
SoftwareSerial Serial1(6, 7); // RX, TX

But that errors with:
BasicTest:12: error: conflicting declaration 'SoftwareSerial Serial1'
 SoftwareSerial Serial1(6, 7); // RX, TX

(There are more errors but to keep things simple at this point)

So if I change it to mySerial1:   It "works".

So what is now stumping me is the comms from the board to the wifi part.

I can flash the board with BLINK and the LED blinks.   No external LED needed.  It works/Flashes the LED.

The sketch I am trying is "BasicTest" is not working.

But my question is:  Is that a WAP or looking to connect to a point?

I tried other sketches in the /examples/ScanNetworks but it won't work either.

All I get is the error that it can't find/connect to the wifi part of the card.

That begs back to the question about what pins are used for the "internal comms".  6 & 7 or 7 & 8 - as per the link and the pin out diagram.

(Mistakes happen and I'm not sure if it is a simple case of error compounding.)

It is also that the code was written a while back.   Maybe the pins have changed - but why? - or why not?.....    I don't know.

It would be nice if I could get it to list all available networks - so I know the card is working.

Then I hope I can get the code I want uploaded.

Thanks again for the replies.

Big list of errors:
Arduino: 1.8.5 (Linux), Board: "NodeMCU 1.0 (ESP-12E Module), 80 MHz, 4M (1M SPIFFS), v2 Prebuilt (MSS=536), Disabled, None, 115200"

BasicTest:12: error: conflicting declaration 'SoftwareSerial Serial1'
 SoftwareSerial Serial1(6, 7); // RX, TX
                       ^
In file included from /home/pi/.arduino15/packages/esp8266/hardware/esp8266/2.4.0/cores/esp8266/Arduino.h:246:0,
                 from sketch/BasicTest.ino.cpp:1:
/home/pi/.arduino15/packages/esp8266/hardware/esp8266/2.4.0/cores/esp8266/HardwareSerial.h:147:23: error: 'Serial1' has a previous declaration as 'HardwareSerial Serial1'
 extern HardwareSerial Serial1;
                       ^
/home/pi/Downloads/WiFiEsp-master/test/BasicTest/BasicTest.ino: In function 'void loop()':
/home/pi/Downloads/WiFiEsp-master/test/BasicTest/BasicTest.ino:30:67: warning: deprecated conversion from string constant to 'char*' [-Wwrite-strings]
   assertEquals("Firmware version", WiFi.firmwareVersion(), "1.5.2");
                                                                   ^
/home/pi/Downloads/WiFiEsp-master/test/BasicTest/BasicTest.ino:61:45: warning: deprecated conversion from string constant to 'char*' [-Wwrite-strings]
   assertEquals("Check SSID", WiFi.SSID(), "");
                                             ^
exit status 1
conflicting declaration 'SoftwareSerial Serial1'

This report would have more information with
"Show verbose output during compilation"
option enabled in File -> Preferences.

They all go away when/if I make it mySerial1 rather than Serial1....

Beats me.

[Cat]

Update:

Just to help clarify what I am seeing....

This is a screen grab of what happens when I load the "ScanNetwork" sketch.

Note:  Pins 6 & 7 used.

(Same result for 7 & 8)

[Patrick Barnes]

Two things....

1. "Serial1" is (often) declared as an object in Arduino, so you can't use it as a variable name or else the compiler will error.

(imagine you tried to declare an integer called 'loop')

2. When using Wemos device, the numbered pins on the board are actually referenced within the Arduino IDE as 'D6', 'D7' etc.

Generally it's a good idea to use them instead of just numbers.

eg.

SoftwareSerial mySerial1(D6,D7);

-Patrick

  

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[Cat]

Thanks very much Patrick.

Not wanting to sound unhappy with what you said, but after reading it:  I'm confused.

If:

1. "Serial1" is (often) declared as an object in Arduino, so you can't use it as a variable name or else the compiler will error.

(imagine you tried to declare an integer called 'loop')

Why (rhetorical in some ways) did the person who wrote the code break that rule?

Ok, so I changed thename to mySerial1( )  It complies but still won't talk to the wifi part.

Its brand new and so should work.

I can't believe that my changing the pins from 6 & 7 to 7 & 8 destroyed/damaged anything.

I am using the original 6 & 7.  No joy.    :(

I'm not missing any elephant - am i?

On 19 February 2018 at 22:40, Patrick Barnes <mrt...@gmail.com> wrote:

Two things....

1. "Serial1" is (often) declared as an object in Arduino, so you can't use it as a variable name or else the compiler will error.

(imagine you tried to declare an integer called 'loop')

2. When using Wemos device, the numbered pins on the board are actually referenced within the Arduino IDE as 'D6', 'D7' etc.

Generally it's a good idea to use them instead of just numbers.

eg.

SoftwareSerial mySerial1(D6,D7);

-Patrick

  

On Mon, 19 Feb 2018 at 22:21 Cat <fuzzywu...@gmail.com> wrote:

Update:

Just to help clarify what I am seeing....

This is a screen grab of what happens when I load the "ScanNetwork" sketch.

Note:  Pins 6 & 7 used.

(Same result for 7 & 8)

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[Matt Callow]

I am somewhat confused as to what you are trying to do.

The WiFiESP library looks like it should be programmed to a 'standard' Arduino, NOT an ESP module. It will then try to talk to an ESP module over serial. The ESP module should have the standard AT firmware.

But, from the screenshot, it looks like you've uploaded to the ESP

On 19 February 2018 at 22:40, Patrick Barnes <mrt...@gmail.com> wrote:

Two things....

1. "Serial1" is (often) declared as an object in Arduino, so you can't use it as a variable name or else the compiler will error.

(imagine you tried to declare an integer called 'loop')

2. When using Wemos device, the numbered pins on the board are actually referenced within the Arduino IDE as 'D6', 'D7' etc.

Generally it's a good idea to use them instead of just numbers.

eg.

SoftwareSerial mySerial1(D6,D7);

-Patrick

  

On Mon, 19 Feb 2018 at 22:21 Cat <fuzzywu...@gmail.com> wrote:

Update:

Just to help clarify what I am seeing....

This is a screen grab of what happens when I load the "ScanNetwork" sketch.

Note:  Pins 6 & 7 used.

(Same result for 7 & 8)

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[Matt Callow]

If you want to write code directly for the ESP, then start with the ESP8266 Modules examples

Try WiFiScan

[Cat]

Hi Matt.

I'm wanting to flash the wifi part of the board with code.

For now all I seem to be able to do is talk to the board and blink the led.   Nothing more.

With the library I got example sketches and tried to load them.   For now, a network scanner which shows me the names of all the wifi networks around the place.

It isn't working.

I think I am not understanding all I need to know to get what I want done.   I'll accept I'm missing something, but everything I am reading doesn't seem to explain it in a way I understand.

Just got your new post.   Shall post this and read the new reply now.

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[Matt Callow]

If you want to write code directly for the ESP, then start with the examples for esp8266 which should have been installed when you installed the esp8266 core

[Cat]

Yeah, that's what I thought I was doing.

In the ESP library I posted there are examples to do that kind of thing.

I try to load them and "flash" them to no avail.

These are the ones which came with the library.

Reading your latest post:

So these examples (which should have been installed when you installed the esp8266 core) are.......  where?

Sorry.  Not trying/wanting to be difficult.

It just seems I missed something somewhere.

I thought the examples which came with the ESP library (afore mentioned and posted) would have the needed code.

But as I said:   They don't seem to work.

[Cat]

This is the "ScanNetworks" sketch I am trying  - attached.

You (or someone) mentioned the AT Commands.  I know they aren't exactly the same as the modem ones, but.......

I am not seeing any of them in the code.   As far as I can see.

[Matt Callow]

They should be listed in the same place as all the other examples. There should be a whole section of esp8266 examples

[Matt Callow]

The AT commands are in the library. I'm 99% sure that the wifiesp library should not be flashed to an esp8266

[Cat]

(I am still not "confident" to trust/understand that part of the GUI).

But looking at what it loads, that is what I just posted.

Doesn't work.

When I extracted the ZIP file, I get a "WiFiEsp-master" directory.

I copy the src directory to the arduino's library directory and put it in a WiFiEsp directory.

But the "master" directory is floating around in my downloads directory for now.

[Matt Callow]

Do you have and esp8266 connected to an Arduino? If the answer is no, you do not want the WiFiEsp library

[Cat]

I think this is a problem.

The board is this one - see picture.

Does that help?

[Cat]

To clarify with the compiling:

(See attached)

When I do code for other Arduino projects I don't see compiling like shown in the bottom left red area - where it does lines of ....... with percentages shown.

(That's new)

The output/comms window shows how the code says it can't see/find the wifi part....    It is all part of the one board.   Well, ok:  It is a daughter board on a main board, but to me, it is one thing.

Unlike the Jaycar one which I was trying a few weeks back.

The "type" of board is way down the bottom and is as per what I read on the link I posted at the start of tonight's set of posting - or close there to.

[Brendan Halliday]

The code you have in your arduino IDE window and are showing the debug response for is designed to be run on an arduino atmel based board talking to an esp8266 shield. 

Going by your posts it sounds like you're trying to program directly now instead of using a shield.  I'd recommend watching Dave's video on using the Arduino IDE to program esp8266 boards at https://www.youtube.com/watch?v=Q6NBnPfPhWE

The compiler on the backend as well as the uploading process is different to what you'd expect from using bare Arduino and that's fine.

[Cat]

Thanks very much.

Dunno what it is/was, but SOMETHING clicked!

So, I have it "working" in that I can connect to my WAP and they can talk.   (MQTT)

Arcing back to a long time ago, I was asking about the Jaycar HCT thingy.  (Temp and humidity).

I got it working - thanks again to all those who helped there - and so the story moves forwards:

The code for the HCT things works, but it was (then) written for ethernet and now wifi.

It had problems with "types" of data:  strings, chars, and stuff.  I'll get there soon.

I re-wrote the code and it works via wifi.   Woo Hoo!

Oh, the pin declared is only for the sake of assigning it.

I need to find out which one I can REALLY use.

(Code attached)

Now comes the old problem:

It won't compile and complains about stuff like this:
/home/pi/sketchbook/WiFi_Stuff/External_Temperatures/Temperature_1.ino: In function 'void Send_Message(String)':
Temperature_1:90: error: no matching function for call to 'PubSubClient::publish(const char*&, String&)'
   client.publish(outTopic, message);
                                   ^
/home/pi/sketchbook/WiFi_Stuff/External_Temperatures/Temperature_1.ino:90:35: note: candidates are:
In file included from /home/pi/sketchbook/WiFi_Stuff/External_Temperatures/External_Temperatures.ino:29:0:
/home/pi/sketchbook/libraries/PubSubClient/src/PubSubClient.h:130:12: note: boolean PubSubClient::publish(const char*, const char*)
    boolean publish(const char* topic, const char* payload);

I would really like to understand what is is saying, but can't.

Although I agree the errors are great in they explain everything:  I'm still not that good to understand what it is saying.

And what I am also "stuck" with is can I use THREE (or at a push 2) HCT thingies on the one board to give their own readings?

And - the last part - I want to add a GPS module to get the time.

Then it is my private NTP source.  It will send the time (via MQTT) to the NTP server and if a big difference, the NTP one will adjust its time.

But that is more a remote thing for THIS part of things.

Again:   Thanks very much for all the help.

[Aidan Samuel]

> With the arduino plugged i to the computer and I open the "debug" window, and send AT+RST<CR/LF> Nothing happens

How were you able to resolve this?

I just bought 10 x ESP8266. I'm trying to get one chip to work, and although the SSID shows up when it's powered, I can't communicate with it over the serial interface. No response at all.

It may just be a bad chip, and perhaps I should try another one, but I want to make sure I'm doing everything right first before I risk potentially frying another one.

I'm going to try a better power supply, but I don't have much hope that'll rectify the problem.

On Friday, 29 December 2017 07:27:43 UTC+11, shykitten55 wrote:

Yeah, thanks Brett, but I think something was lost in translation.

I opted for the remote power point rather than an e-mail notifier.

Only that I wanted to keep it as simple as possible.

Reading the manual the wifi name is not correct.

It comes up as AI_THINKER_D4950Fand there is no password.

I can't get to the 192.168.4.1 web page - though I am connected to it via wifi.

With the arduino plugged i to the computer and I open the "debug" window, and send AT+RST<CR/LF> Nothing happens.

Though I said CR/LF, it is as how the IDE says.

But reading the specs, it wants/states them the other way around.

Dunno if that will make a difference or it is just a typo.

I can't get it to communicate, other than transmit it SSID.

I can connect - as said - but no password is needed - but I can't connect to the GUI on the shield.

Reading more stuff, I need to update to version 1.1 of the software.

I'm stuck there too, as I don't have FTDI cables or even understand what to do realy.

Sorry, gotta go.

This was a quick post on what is going on and an update.

On 29 December 2017 at 06:31, Brett <brett...@hotmail.com> wrote:

If you take a look at one of their example projects that use it, you should have everything you need....

https://www.jaycar.com.au/wifi-notifier for example. 

On Thursday, 28 December 2017 17:45:28 UTC+11, shykitten55 wrote:

Hi folks.

Hope Santa was good to you all.

I just bought this:

Jaycar wifi shield.

But seem to be missing how to get it working.

I've read all the posts and people asking how to get it working.

Has anyone here got one and know how to get it working and not mind helping me?

I'm guessing that I need to put "straps" (jumpers) on the shield so it connects to the arduino.

Putting aside that the sketches won't upload, I have tried a few times and I can't get a reply from any AT command.
But not having any "straps" on the shield wouldn't help.

But all the docs I have found have the wrong names/labels for what to strap to what.


Anyway, thanks in advance.

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[Lewys Martin]

Hey dude, 

Just a heads up Jaycar now sells the Wemos D1 Mini  : https://www.jaycar.com.au/wifi-mini-esp8266-main-board/p/XC3802

Also, the ESP32... https://www.jaycar.com.au/esp32-main-board-with-wifi-and-bluetooth/p/XC3800

But anyway Ill be in the space today if you still needed any help, I cant hold your hand through everything but ill be able to help out, I have a bit more experience programming bare ESP boards now, i know the do's and don't ! 

[kris]

hmm D1 mini, $25

that's not actually that bad.

Tronixlabs sell them for $11 plus shipping here in Australia.

But you get to have it your hands instantly for twice the price.


I wonder if jaycar are catching on. If they keep going the way of
dicksmith they will be dead.
I think there is a hobbyist culture in australia and we like the ability
to get what we want instantly, even if we're paying more.
If you look at it one way: "i'm paying 110% mark up for the same thing
from china!" then yes, it doesn't make sense. But imagine you're
browsing aliexpress or ebay and you could pay an extra $13 'shipping'
and have the device 'delivered' instantly ready for pickup just round
the corner!

Right now there isn't really a handy shop that has the more popular
arduino/hobby items that does that.
Lots of online stuff (waves at core electronics and little bird) but not
a physical shop.

having said that, the space has a shop. it has esps and lots of
interesting boards. no one buys anything.

On 18/03/18 08:30, Lewys Martin wrote:
> Hey dude, 
>
> Just a heads up Jaycar now sells the Wemos D1 Mini 
> : https://www.jaycar.com.au/wifi-mini-esp8266-main-board/p/XC3802
>
> Also, the
> ESP32... https://www.jaycar.com.au/esp32-main-board-with-wifi-and-bluetooth/p/XC3800
>
> But anyway Ill be in the space today if you still needed any help, I
> cant hold your hand through everything but ill be able to help out, I
> have a bit more experience programming bare ESP boards now, i know the
> do's and don't ! 
>
> On Thursday, December 28, 2017 at 5:45:28 PM UTC+11, shykitten55 wrote:
>
> Hi folks.
>
> Hope Santa was good to you all.
>
> I just bought this:
>
> Jaycar wifi shield.

> <https://www.jaycar.com.au/arduino-compatible-esp-13-wifi-shield/p/XC4614>

>
> But seem to be missing how to get it working.
>
> I've read all the posts and people asking how to get it working.
>
> Has anyone here got one and know how to get it working and not
> mind helping me?
>
> I'm guessing that I need to put "straps" (jumpers) on the shield
> so it connects to the arduino.
>
> Putting aside that the sketches won't upload, I have tried a few
> times and I can't get a reply from any AT command.
> But not having any "straps" on the shield wouldn't help.
>
> But all the docs I have found have the wrong names/labels for what
> to strap to what.
>
>
> Anyway, thanks in advance.
>
>
>
>
>

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[Lewys Martin]

From.china D1 mini is $3.50 but I agree the ability to get it instant is crazy helpful.if you need it. 

I picked up one of the esp32 boards for $40 just to play around with 

Also, I've bought a few things from the space over my time :^) 

I should do a stock up of it when I'm paid next, it was looking a bit baren last I saw it 

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[Cat]

Hi folks.

Sorry for being quite, but things have been going on in other aspects and I am kinda side-tracked.

I am going to be busy for the rest of the week.

Me:  I am getting there but am having trouble with writing a "combined sketch" of two working sketches.

I'm not sure but I bought something which was basically this:
https://www.jaycar.com.au/esp32-main-board-with-wifi-and-bluetooth/p/XC3800

for about $6 landed and so I bought 5 of them.

Programing them takes a bit of magic, but it isn't impossible.   You just have to make sure all the boxes are ticked before you can get to the right settings.

(Boards/drivers, etc)

Without wanting to annoy anyone could I ask for someone to help me get my head around why the two sketches won't "combine"?

I have since discovered that my original understanding if how to write code is wrong/flawed.

Subsequently there are problems when I try to do what I am trying to do.

But I still don't get the errors.

Oh, and on the newer board I'm stuck with other things:

(sorry for the tangent - maybe)

On an UNO:  I can set a pin as an INPUT, and DIGITALWRITE(pin, HIGH) and so it uses the "internal pull up resistors".

That way I short the input LOW and the arduino sees the change.

When the input is removed it goes high again.

Playing with the board, I wrote a bit of code (sorry on another machine, but this is a basic walk through)

void test()
{

  int x;

  static int y;

  pinMode(4, INPUT);

  digitalWrite(4, HIGH);

  x = digitalRread(4);

  if (x !=y)
  {

     y = x;

    Serial.print("input change detected ");

    Serial.println(x);
  }
}

Yeah, I know:  Sloppy.

It is called in the main loop.

So why is it to get an output I need to pull the pin (4) HIGH first and I see a "1".

Then if I pull it LOW, I see a change to "0"

That doesn't make sense.

As each time (I've tried it in the setup() part too:  Same result) the pin should be written HIGH, it should "reset" to "1" if I don't have the input pulled either way.

I'll stop talking now.   I think I am digging a hole.

But I can post the two sketches later if someone feels helpful to look at it.

I can also post the stuff I wrote and you could maybe (also) show me where I was making mistakes.

Thanks folks.

[Lewys Martin]

Just an off the top thought, does the esp32 have internal pull-up resistors on every pin?

Does it have them at all?

May be worth checking the diagram or data sheet 

Send through the sketches when you can and tell me what error you get 

[Cat]

Here are the sketches.

Expanded_External_Temperatures (and Read_Temperatures)

That is a set.

It complains something about types of variables.

You are doing to need the 8266, MQTT and the DHT library - from Jaycar. libraries.

Wifi_Led_Toggle.

That is my starting point.

It works.

Wifi_button and IO_Stuff:

That is where I am testing the Input of the board and the pull up stuff.

It works, but just included for clarity.

Libraries:

(Saves you downloading them and so we all have the same ones.)

Oh.....    Drats.

They are on my RPI.

When I click on the folder and say "Archive" it errors.

There are a lot of files in the libraries.

Sorry.

Oh, and you

[Kris]

Also, I think you have to declare the pull-ups don't you?
I did with the Arduino nano, I got really strange results until I did
https://www.arduino.cc/en/Tutorial/DigitalPins
Have a read of the pull-ups section. It may explain why you are seeing inversion

---

From: Lewys Martin <countp...@gmail.com>
Sent: 19 March 2018 22:03:43 GMT+11:00
To: sydney-h...@googlegroups.com
Subject: Re: [RnD] Re: Arduino wifi shield help.

--
Sent from my Android device with K-9 Mail. Please excuse my brevity.

[Matt Callow]

To enable pull-ups on an input

, I would use pinMode with INPUT_PULLUP rather than setting the pin high. Looking at the esp Arduino core,  I don't think setting the ouput to high will enable the pull ups

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[Cat]

Thanks Matt and Kris.

Walk through of the temperature sensor problems:

I bought one of the DHT sensors from Jaycar a while back and was asking about 3/5 volt tolerances and how I wasn't getting 5v on the Ethernet equipped Uno at that time.

(Seems it is powered from the external 12v supply.)

Anyway, that aside, I got the supplied test sketch to work with the DHT sensor sending temperature info and an ethernet equipped Uno.

Then I got the idea of rather than ethernet:  Go WiFi.

So I got one of the example sketches (WiFi_LED - I think) and it also had MQTT - great!

I got the LED test sketch working and I was getting the "Hello world x" message via MQTT.  I could also toggle the LED on the board by publishing message to it.

All was good.

So:

The temperature sketch wasn't too difficult and so I re-wrote it slightly so it would be called with a parameter defining the pin.

But alas when testing I was getting weird results.   Funny values.   I'm suspicious I was not using an analogue input.   On the pinouts I can't really see any called analogue input, but maybe I'm having a blond/blind spell.

Anyway, so I went back to the Uno/Ethernet arduino and tried it.   It worked/works.  Ok, so it CAN work.   Just not on the wifi board.

Then comes the problem of the "message".

In the standard sketch, the message is something like printf("hello world %d, x);

So, with that I was pointed towards snprintf( ....... );

But that's where it falls over.

No matter what I do, there seems to be a "type conflict" and it won't compile.

I also discovered that my type declarations were "wrong", or something.

How I see it there are three parts/groups in the code:

1 the initial settings - like the INCLUDE, #DEFINE and other declarations.

2 the setup() - where other things are done ONCE, but are code lines rather than definitions/declarations.

3 the code part.    This can be the loop() (or main()) and functions.

All variables declared in part 1 are GLOBAL and can be seen at all parts of the code.

Any variables declared in loop() or other blocks are local to that part.

They do survive sub-sections, but not other sections.

But when I was compiling, I was getting errors about "variable name not declared" when it was.

So I took it from "part 1" and put it in "part 3" of the code and it worked.

I don't get that.

Something about types - I think I read or it was told to me.

I read about types and it didn't seem to answer the question.

I've tried different variations and was going around in circles.

I'm stuck/confused.

I hope that helps you in understanding how I am stuck and to word the answer in a way I understand.

Thanks again.

[Cat]

Oh, and to help this is the picture of the pin outs I am using:

Sorry.  Meant to send it in previous post but got distracted.

[Lewys Martin]

That's a nodemcu, not an esp32, they're different boards FYI

Also, be careful,

Pin 5 and pin D5 are two different pins. 5 refers to the gpio5 pin on the esp8266 and D5 is the pin labelled as D5 on the nodemcu. 

Have you tried looking at an existing esp8266 sketch that takes a dht11/22 and publishes it's data to mqtt?

On Tue, 20 Mar. 2018, 3:28 pm Cat, <fuzzywu...@gmail.com> wrote:

Oh, and to help this is the picture of the pin outs I am using:

Sorry.  Meant to send it in previous post but got distracted.

--

[Cat]

Ok, thanks.

Not calling it for what it is won't help.

Sorry.

In answer to your question:  No.    I think the only one I have was.......      Honestly:   I don't remember.   I just downloaded the Jaycar stuff and it had a "read temperature/humidity" and print it.

So I expanded on that.

BTW, which are the analog inputs on supplied picture/device?

On 20 March 2018 at 15:31, Lewys Martin <countp...@gmail.com> wrote:

That's a nodemcu, not an esp32, they're different boards FYI

Also, be careful,

Pin 5 and pin D5 are two different pins. 5 refers to the gpio5 pin on the esp8266 and D5 is the pin labelled as D5 on the nodemcu. 

Have you tried looking at an existing esp8266 sketch that takes a dht11/22 and publishes it's data to mqtt?

On Tue, 20 Mar. 2018, 3:28 pm Cat, <fuzzywu...@gmail.com> wrote:

Oh, and to help this is the picture of the pin outs I am using:

Sorry.  Meant to send it in previous post but got distracted.

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[Lewys Martin]

The very top left pin labelled A0 is the only analogue pin

On Tue, 20 Mar. 2018, 3:41 pm Cat, <fuzzywu...@gmail.com> wrote:

Ok, thanks.

Not calling it for what it is won't help.

Sorry.

In answer to your question:  No.    I think the only one I have was.......      Honestly:   I don't remember.   I just downloaded the Jaycar stuff and it had a "read temperature/humidity" and print it.

So I expanded on that.

BTW, which are the analog inputs on supplied picture/device?

On 20 March 2018 at 15:31, Lewys Martin <countp...@gmail.com> wrote:

That's a nodemcu, not an esp32, they're different boards FYI

Also, be careful,

Pin 5 and pin D5 are two different pins. 5 refers to the gpio5 pin on the esp8266 and D5 is the pin labelled as D5 on the nodemcu. 

Have you tried looking at an existing esp8266 sketch that takes a dht11/22 and publishes it's data to mqtt?

On Tue, 20 Mar. 2018, 3:28 pm Cat, <fuzzywu...@gmail.com> wrote:

Oh, and to help this is the picture of the pin outs I am using:

Sorry.  Meant to send it in previous post but got distracted.

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[Cat]

Thanks.  I just found that too.

(Dumb question)     Is there only ONE analog pin?

2 would be just that much better for what I want to do.

And neither interfere with the pins which I want to connect to receive data from a GPS modoule.

On 20 March 2018 at 15:43, Lewys Martin <countp...@gmail.com> wrote:

The very top left pin labelled A0 is the only analogue pin

On Tue, 20 Mar. 2018, 3:41 pm Cat, <fuzzywu...@gmail.com> wrote:

Ok, thanks.

Not calling it for what it is won't help.

Sorry.

In answer to your question:  No.    I think the only one I have was.......      Honestly:   I don't remember.   I just downloaded the Jaycar stuff and it had a "read temperature/humidity" and print it.

So I expanded on that.

BTW, which are the analog inputs on supplied picture/device?

On 20 March 2018 at 15:31, Lewys Martin <countp...@gmail.com> wrote:

That's a nodemcu, not an esp32, they're different boards FYI

Also, be careful,

Pin 5 and pin D5 are two different pins. 5 refers to the gpio5 pin on the esp8266 and D5 is the pin labelled as D5 on the nodemcu. 

Have you tried looking at an existing esp8266 sketch that takes a dht11/22 and publishes it's data to mqtt?

On Tue, 20 Mar. 2018, 3:28 pm Cat, <fuzzywu...@gmail.com> wrote:

Oh, and to help this is the picture of the pin outs I am using:

Sorry.  Meant to send it in previous post but got distracted.

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[Lewys Martin]

Yes just one on this board, DHT sensors are digital using the 1wire protocol, a GPS module would be a serial module (look up ublox mini)

Neither of these need analogue pins :)

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[Cat]

Oh.    Ok.    Oops.   My bad.

You are right.

Seems I am my own worst enemy.    :(

In my sketch, I was using GPIO4 and 5 as the two temperature sensor inputs.

Putting aside 5 for now and just working on 4, I was getting weird readings.

I shall wire things up now and post the results.

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[Cat]

Oops, no sorry.   I can't.   Won't compile.    (Drats)

[Lewys Martin]

DHT sensors only require 1 data pin

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[Cat]

Just found a DHT11 - MQTT sketch.     Copying to other machine and loading.

Shall look into and hope I learn something.

Thanks a lot for the help.

[Lewys Martin]

No worries. Good luck 

[Cat]

Wow!

Progress has been made!

This is the code now:

(see attached)

And sorry about all the "old code" in there.

I am still working on it and am leaving old stuff in there so I know what to NOT use/do again.

But I'm now wanting to work out how to make it so I get TWO readings from TWO sensors.

Rather than duplicating the code I am wanting to make the "read_temp" part a FUNCTION.

I shall invest in trying to do it myself, but I just wanted to put it out there, as it seems to help me get things done.

[Cat]

Ok, so this is what I have resolved:

#define DHpin1 4
#define DHpin2 5

#define DHTTYPE DHT11 // DHT 11
DHT dht(DHpin1, DHTTYPE);

//------------------------------------------------------------------------------
void setup()
{
  Serial.begin(115200);
  Serial.println("Starting");
  pinMode(BUILTIN_LED, OUTPUT);     // Initialize the BUILTIN_LED pin as an output
  pinMode(DHpin1, OUTPUT);
  pinMode(DHpin2, OUTPUT);
  setup_wifi();

  dht.begin();

So:
DHT dht(DHpin1, DHTTYPE)

That sets up DHT as a (something) which can be used in things like:

dht.begin();

and other dht.functions()

So, could I do something like:

#define DHpin1 4
#define DHpin2 5

#define DHTTYPE DHT11 // DHT 11
DHT1 dht(DHpin1, DHTTYPE);

DHT2 dht(DHpin2, DHTTYPE);

//------------------------------------------------------------------------------
void setup()
{
  Serial.begin(115200);
  Serial.println("Starting");
  pinMode(BUILTIN_LED, OUTPUT);     // Initialize the BUILTIN_LED pin as an output
  pinMode(DHpin1, OUTPUT);
  pinMode(DHpin2, OUTPUT);
  setup_wifi();

  dht1.begin();

  dht2.begin();

Alas it doesn't work/like it.

I don't "get" how that part works.

I'll look/try to understand it, but I am new to it and not using it often, I forget.

Again:    Thanks.

[Lewys Martin]

I mean, I've gotta ask, why are you using two temp/humidity sensors within such close proximity ??

Is It just to learn or  compare the sensors or ?

Not sure, you should look for examples using two !

[Cat]

They won't be close to each other.

One will be to get the ambient temperature and one near the A/C fan output.

So just to indulge my curiosity I can see the outside temp/humidity and - if the A/C is on - see how hotter the air is after passing the coil.

Yeah, I know......

And when I get all that working, I shall get the GPS added for time.

Fun fun fun.

;)

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[Lewys Martin]

For time you could use an RTC module, also you're gonna have a lottt of wire around from the sounds of it, it may be more economical to have multiple esp nudes all reporting to the same mqtt server

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[Cat]

I do have an RTC on an internal RPI on my local network.

It seems to work ok.

More as an exercise I was going to add a GPS to the (new/planned) external WiFi unit which is to get two external temps.

Just for the fun of it.

So you saying there will be a lot of wire around.....

3 very short ones to the on board temp sensor.

3 very short wires to the GPS module.   It  will have an external antenna connected.    Not too long.

3 fairly short wires to an external connection point for the second temperature sensor.    Then about 2 M of wire to the second sensor.

Granted there will be the USB power connected.

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[Lewys Martin]

I'm more referring to the wires heading outside

I find it easier to just have multiple nodes with nothing but a USB connection :^)

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[Cat]

Fair enough.

But as it is, there are only 3 wires.

The second sensor.

But so far things are working.

I'm getting values back from the sensor.

And I can talk to it.

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[Lewys Martin]

Glad you got things working

Not the quantities of individual wires, but the length/dealing with running them

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[Jaz]

Just to jump back into this old thread and point out what I think just happened: Cat followed our advice and bought an ESP8266 board, but kept following the examples for programming the ESP8266-based Arduino shield.

If you buy a NodeMCU/D1 etc you can use the Arduino IDE to program it but you use the included libraries to do the networking stuff, not the AT serial commands. e.g. Here is what the top of my code for a device that makes itself an Access Point and has a web server looks like:

const char *ssid = "MyToyAccessPoint";

const char *password = "supersecret";

ESP8266WebServer myServer(80);

void setup() {

  WiFi.softAP(ssid, password);

  IPAddress myIP = WiFi.softAPIP();

  Serial.print("AP IP address: ");

  Serial.println(myIP);

  myServer.on("/", handleRoot);

etc etc

One little trick I learned is that the code compiles and loads just fine onto the device but the networking doesn't work if your wifi password is less than 8 characters.

 

On 20 February 2018 at 16:51, Aidan Samuel <aidan....@gmail.com> wrote:

> With the arduino plugged i to the computer and I open the "debug" window, and send AT+RST<CR/LF> Nothing happens

How were you able to resolve this?

I just bought 10 x ESP8266. I'm trying to get one chip to work, and although the SSID shows up when it's powered, I can't communicate with it over the serial interface. No response at all.

It may just be a bad chip, and perhaps I should try another one, but I want to make sure I'm doing everything right first before I risk potentially frying another one.

I'm going to try a better power supply, but I don't have much hope that'll rectify the problem.

On Friday, 29 December 2017 07:27:43 UTC+11, shykitten55 wrote:

Yeah, thanks Brett, but I think something was lost in translation.

I opted for the remote power point rather than an e-mail notifier.

Only that I wanted to keep it as simple as possible.

Reading the manual the wifi name is not correct.

It comes up as AI_THINKER_D4950Fand there is no password.

I can't get to the 192.168.4.1 web page - though I am connected to it via wifi.

With the arduino plugged i to the computer and I open the "debug" window, and send AT+RST<CR/LF> Nothing happens.

Though I said CR/LF, it is as how the IDE says.

But reading the specs, it wants/states them the other way around.

Dunno if that will make a difference or it is just a typo.

I can't get it to communicate, other than transmit it SSID.

I can connect - as said - but no password is needed - but I can't connect to the GUI on the shield.

Reading more stuff, I need to update to version 1.1 of the software.

I'm stuck there too, as I don't have FTDI cables or even understand what to do realy.

Sorry, gotta go.

This was a quick post on what is going on and an update.

On 29 December 2017 at 06:31, Brett <brett...@hotmail.com> wrote:

If you take a look at one of their example projects that use it, you should have everything you need....

https://www.jaycar.com.au/wifi-notifier for example. 

On Thursday, 28 December 2017 17:45:28 UTC+11, shykitten55 wrote:

Hi folks.

Hope Santa was good to you all.

I just bought this:

Jaycar wifi shield.

But seem to be missing how to get it working.

I've read all the posts and people asking how to get it working.

Has anyone here got one and know how to get it working and not mind helping me?

I'm guessing that I need to put "straps" (jumpers) on the shield so it connects to the arduino.

Putting aside that the sketches won't upload, I have tried a few times and I can't get a reply from any AT command.
But not having any "straps" on the shield wouldn't help.

But all the docs I have found have the wrong names/labels for what to strap to what.


Anyway, thanks in advance.

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[Lewys Martin]

I think the minimum password you can set for wpa2 is 8 chars long~

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[Jaz]

Yeah I guessed as much when solving the problem. The odd behaviour was that my new sketch would upload to the device but the old SSID from a previous sketch would become available. Would have preferred it to error out.

Everyone is onto the D1 bandwagon, even Colin Furze:

(shouty but fun build video) https://www.youtube.com/watch?v=22rysDq8PE0

[Matt Callow]

The esp8266 can store the config info for a couple of networks. Once you've set the Sid and password, you can remove it from the sketch if you wish (not that I'd recommend it)

[kris]

oh that's interesting!

would explain some strange behaviour when i was working with one at the
space.

On 23/03/18 17:54, Matt Callow wrote:
> The esp8266 can store the config info for a couple of networks. Once
> you've set the Sid and password, you can remove it from the sketch if
> you wish (not that I'd recommend it)
>
> On Fri, 23 Mar 2018, 13:12 Jaz, <j...@goatcse.cx
> <mailto:j...@goatcse.cx>> wrote:
>
> Yeah I guessed as much when solving the problem. The odd behaviour
> was that my new sketch would upload to the device but the old SSID
> from a previous sketch would become available. Would have
> preferred it to error out.
>
> Everyone is onto the D1 bandwagon, even Colin Furze:
> (shouty but fun build video)
> https://www.youtube.com/watch?v=22rysDq8PE0
>
>
> On 21 March 2018 at 07:46, Lewys Martin <countp...@gmail.com

> <mailto:countp...@gmail.com>> wrote:
>
> I think the minimum password you can set for wpa2 is 8 chars long~
>
> On Wed, 21 Mar. 2018, 7:44 am Jaz, <j...@goatcse.cx

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