Android app group

[MRE]

Any interest in starting a once per month Android app development study group?

[Taylan Ayken]

Here!

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From: MRE <epre...@gmail.com>
To: tokyohac...@googlegroups.com
Sent: Thursday, November 8, 2012 2:46 AM
Subject: [THS:21056] Android app group

Any interest in starting a once per month Android app development study group?

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[Quadrant]

Hi there im not a visitor to the group as I live in the UK but I would love to learn about Android app

Development, Im a computer programmer I write mainly in C but do a little Assembly and some C++

But not C++ Classes, Ive designed computer games and im also a robotics designer, metal working

Engineer and cad designer etc. If I can be helpful to you guys im willing to help in any way I can

I do use skype and have video support.

 

Regards

Richard

 

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[MRE]

Google has a pretty good set of tutorials onlibe, and I got some books.

Looks mostly straight forward.

Java plus a visual dev kit, and a large selection of prepackaged functions and services.

[AbH Belxjander Draconis Serechai]

Eclipse? or something else?

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[MRE]

Yes, Eclipse and the Android Dev Kit.
Install instructions and tutorials here:
http://developer.android.com/training/basics/firstapp/index.html

[Scott]

YES ME!
I have bought a book as well but haven't done much yet, being in a monthly group would be the kick in the bum I need.

[MRE]

Thinking of our schedule, itd seem that monday is least utilized.
Im thinking first and third monday, arduino and android.

[AbH Belxjander Draconis Serechai]

Speaking of Arduino and Android...

I have need to custom build an Arduino with BlueTooth serial link as a wireless controller for printing

and need to control it from android

Are there any decent tools for setting up mechatronic devices with android on the remote?

On Nov 9, 2012 12:19 PM, "MRE" <epre...@gmail.com> wrote:

Thinking of our schedule, itd seem that monday is least utilized.
Im thinking first and third monday, arduino and android.

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[Mohd Faiz Mohd Azhar]

I've been to one of loftworks workshop about android programming with processing.
and i would also be interested on app integration btw android and arduino.

[Torsten Wagner]

A while ago I posted here a project which aims to control an arduino by android.
Guess the dev will be very happy if you stick to that app for testing
and help to improve it.
I can't find the sources and hence it might not be open source.
However, the dev is quite responsive and
if enough people ask he might be willing to show off some (all) code too.

http://anettosoftware.co.uk/ac.php

Totti

[David Lyon]

On Fri, Nov 9, 2012 at 2:28 PM, AbH Belxjander Draconis Serechai <belxj...@gmail.com> wrote:

Speaking of Arduino and Android...

I have need to custom build an Arduino with BlueTooth serial link as a wireless controller for printing

and need to control it from android

Are there any decent tools for setting up mechatronic devices with android on the remote?

In Sydney, I did a blog on HC-05 devices.

 - http://www.hackerpads.com/blog/?p=49

On the Android side, you just need an app that will write to a serial port. So you have
great flexibility on how you do that.

[MRE]

I have a few bluetooth serial modules for android. Will order more.

[MRE]

Ment to say for ARDUINO, work with android.

[Richard Frankum]

Soon-to-be THS member (I hope) Hisakawa-san sells an android hacker board.
http://www.harpyhack.com/

I could use a little motivation as well, I've read a lot of android code but haven't written much.
I can give some pointers on Eclipse, if you'd like. I've done Java for a long time, but don't remember the Android libs easily.

[Chris]

Hey, was that you sitting next to me?

Sent from my iPad

[Mohd Faiz Mohd Azhar]

yes that was me ;)

thanks for your help the other day

[MRE]

Well, my hope is that we create a sort of study group.
We can have presentations or demonstrations.

I know nothing about Android dev. I just installed Eclipse and ADK and have made a simple hello program.

So, it would be a self guided group. We can all take turns researching the next step and then guiding the others through.

When it is your turn to present, you would not have to pay the fee, even if you are not a member.

Here is the first event:
http://www.tokyohackerspace.org/en/event/2012-12-03-android-development-study-group

I plan to do the event once a month, always on the first monday of the month, with arduino night on the 3rd monday.
Sometimes, I would like smash them together and do some Android+Arduino stuff (via wifi, bluetooth and usb cable)

[AbH Belxjander Draconis Serechai]

Arduino is one of the MCUs for repraps..

My own primary interest will be a personalized computer with 3D printer that I can use in a mobile fashion

I already have the rest of the system and only need to make a chassis and printer to match my needs

I have already tried std chassis and they all have failed usability so far

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[MRE]

Laser cut a design to pair them together.

[AbH Belxjander Draconis Serechai]

I'm more thinking about how to get a familiar toolchain working at the moment

which will be OpenSCAD, Slic3r and printrun

Does the laser cutter take SVG as I get that from slic3r for free when generating g-code for reprap plating objects

And I already have some chassis materials

On Nov 10, 2012 1:12 PM, "MRE" <epre...@gmail.com> wrote:

Laser cut a design to pair them together.

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[Usmar A Padow]

I am now writing an android and iPhone app. I am using the titanium framework from appcelerator which allows you to write both android and iPhone apps from the same JavaScript code base. It is open source. Here is a video I made showing a test application I made

http://www.youtube.com/watch?v=ueyy5RnP8QA&list=UUG2hctPeJ4bb-T2oJWq7AxA&index=1&feature=plcp

2012/11/08 2:46、MRE <epre...@gmail.com> のメッセージ:

Any interest in starting a once per month Android app development study group?

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[Chris Shannon]

i really like appcelerator. 

c

On Saturday, November 10, 2012, Usmar A Padow wrote:

I am now writing an android and iPhone app. I am using the titanium framework from appcelerator which allows you to write both android and iPhone apps from the same JavaScript code base. It is open source. Here is a video I made showing a test application I made

Titanium Appcelerator First Android App

2012/11/08 2:46、MRE <epre...@gmail.com> のメッセージ:

Any interest in starting a once per month Android app development study group?

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[Usmar A Padow]

Perhaps we could use it to give the "Android" classes you guys where talking about. And they would also work on iPhone/ iPad 

2012/11/10 22:19、Chris Shannon <csha...@gmail.com> のメッセージ:

[MRE]

http://usingimho.wordpress.com/2011/06/14/why-you-should-stay-away-from-appcelerators-titanium/

Although to be honest, as a "study group" any and all development platforms can, should, and will be encouraged.
So, long answer: Sure, if someone wants to come in and give a presentation on it. We can break out into smaller groups working with different systems. The main idea is just to get everyone interested in this stuff in the same room on a consistent event schedule each month.

But personally:
1: While I know I will only be doing BASIC SIMPLE apps, I want to do it the "proper' way
2: I suspect that the stuff I *DO* need to do will not be easily supported by it, like taking control of sensors and communications devices (bluetooth, wifi, wedging input device classes over bluetooth into the OS itself, such that I can make a bluetooth game controller cradle... etc and doing this things properly, consistently, over at least a few different devices)
3: for me, Id rather learn a little bit about the hard way, before trying the easy way. In so doing, I can gain an appreciation for the abstraction provided, while also having a good understanding of when and when not to use it.

But, as I said, its up to someone to come and present on it, or throw it up for discussion.
Thus, if you want to come and do a demonstration of how to use it, great!   I might go ahead and install it myself and give it a try.

[MRE]

Speaking of Android,

on the ground floor of Radio Town, in the very back, an android device booth popped up.
Among the devices I saw there:

* Two variants of handheld android game consoles. One mimicked a PSP, down to the silver ring on the back of the disk cover (on Japan only PSPs). The other mimicked a large version of the Super Nintendo controller.

* A multitude of tablets, from ichiman to yonman.

* A few mini/pocket android devices including this one: http://dx.com/p/jxd-s18-4-3-resistive-screen-android-4-0-mini-pad-tablet-pc-w-tf-wi-fi-g-sensor-black-161536
Yep. The price was reflective! I think it was about 3800 yen... maybe 4800. Dont remember exactly. But damn cheap. Screen resolution is blah.. but it was meant to be a pocket video player/simple games system. Would be GREAT for a data collector (assuming your sensor talks USB or wifi),

* In fact, most of the devices they had on display were from JXD, and pretty cheap. I am thinking of picking up both a tablet (with hdmi, for school work) and a pocket device.. heck.. maybe even one of the gamer units just for kicks (although I have a PSP and have not played it since the last time I went to the US).

[MRE]

JXD:   http://www.jxd.hk/

[MRE]

holy god and country!

http://www.megaupload.com/

[James Andrews]

Did you not know about the siezure of Megaupload, that's like old news.

On Sun, Nov 11, 2012 at 12:45 AM, MRE <epre...@gmail.com> wrote:

holy god and country!

http://www.megaupload.com/

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[MRE]

oh.. they also had an android mini pc. It was a bit bigger than a cigarette lighter.

[MRE]

yeah..
but I had not seen the "certificate of governmental phucking' before.

[Usmar A Padow]

By Radio Town you mean Radio Kaikan in Akihabara? The place near the JR station opposite exit to Yodobashi Kamera?

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[Usmar A Padow]

Well. My reply to http://usingimho.wordpress.com/2011/06/14/why-you-should-stay-away-from-appcelerators-titanium/

 Would be that as all FOSS titanium is a work in progress. I tried titanium about a year ago and had trouble with running android programs. I came back to it a year later and it seems to be a much more mature project.

It was much easier than before to get everything working and it now even has an IDE which I think is eclipse.  I think that that community is working hard to make it all work better.

On 2012/11/11, at 0:31, MRE <epre...@gmail.com> wrote:

http://usingimho.wordpress.com/2011/06/14/why-you-should-stay-away-from-appcelerators-titanium/

[Chris Shannon]

this seems helpful for you. guys. 

http://mobile.smashingmagazine.com/2012/09/10/ios-sdk-for-designers/

c

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[MRE]

yeah.. cross the main street, go up the side of the track and its a few doors in on the right side, across from the wire shop.

[MRE]

The group will be studying android dev...
but a lot of the advice given in the article is relevant to both platforms.

[Torsten Wagner]

Please keep a time slot free during my next visit to show me the place ;)

If some of the ultra-cheap tablets/pocket devices have a USB host interface they would be very interesting to be hacked into one own project.
You couldn't get a cheaper way of displaying your data and having a great touchscreen user interface for your project.
IMO, the android group at THS should focus how to get those ultracheap units embedded in a project (connecting peripherals like arduinos, read data via bluetooth/wifi from sensor nodes, etc.) Some of them might have great hack potential providing some serial or SPI or I2C interfaces as well.

Totti

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[Nava Whiteford]

> IMO, the android group at THS should focus how to get those ultracheap
> units embedded in a project (connecting peripherals like arduinos, read
> data via bluetooth/wifi from sensor nodes, etc.) Some of them might have
> great hack potential providing some serial or SPI or I2C interfaces as well.

While they have their uses I often find hacking around with Android devices infuriating,
there are basically 3 reasons for this:

1. The kernels are often compiled with features missing (e.g. no ext3 support).
2. They use propriety drivers (e.g. PowerVR on OMAP3 devices).
3. They don't use glibc or any of the "normal" Linux userland utilities.

I've been playing with a MotoActv, the hardware is awesome, I've also got the system running
Debian after bootstrapping it with a statically compiled debootstrap. However the propriety
side of things is rather annoying. I can't use the graphics drivers from Debian because the
userland libs have been compiled against the propriety libc clone Android uses. And obviously
I can't compile my own, because sources are not available. The battery charging circuit is also
software controlled and propriety which is annoying.

Anyway, if your looking to write an Android app and have it control some supported hardware, I'm
sure that's fine. But if you're looking to embedded it into a device, I'd consider how the propriety
userland in Android is likely to effect you.

Nav

[MRE]

Yeah, I agree.
My main reason for lusting after them was for using them as display heads for embedded devices.
Its hard to find those units with bluetooth though. But now Xbee has a wifi module as well.. so.. hmmm..
Some of their devices have "USB on the go" which means it can act as either host or slave. Most of the host stuff is for memory stick, ethernet or 3G modules.. but maybe a driver can be written for host mode for android and FTDI.

[AbH Belxjander Draconis Serechai]

I would enjoy having a reprap with spooling controller setup

slave an arduino to the droid and have it charge off the usb when it is not feeding the print comtroller with commands

the other aspect would be dedicating the droid to working with FLOSS data formats to slice for printing

then it is just a matter of queuing the printable objects

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[MRE]

From my understanding, queing a reprap isnt so practical.
Theres still a lot of human interaction.
You can start an long printing time object and go go bed, only to find it failed part way through.

Or worse, had a bind up but kept printing, leaving a mess all over the table.

[AbH Belxjander Draconis Serechai]

True

So it would more operate for only small sections of the current print and support an object library

other than that keeping prints simple is the easiest

multiple objects need to be plated for a concurrent "batch" print

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[MRE]

One interesting idea would be a large scale 4-up device which has one movement over 4 beds, such that you may choose 1-4 copies at once. Only heater and feeder would be independant per head.

All movements linked to one set of steppers.

[MRE]

Were a bit off topic now.
But android based 3D printing is a good idea.
Android would make a decent head device for machining operations.

Bluetooth made headway in factory automation nets before the consumer market. Might be interesting to get a PLC and try building up a library for SCADA and HMI on android.

For the uninitiated, SCADA is supervisory control, while HMI is human to machine interface. These devices do not control machines themselves. They feed data based on user input (called a recipe) and monitor status and production for the front office. The PLC does all the actual work and manages safety of the machine. Thus, an RTOS is not usually necessary. In the case of full PLC replacement with a pc or smart device, the design of the os becomes much more critical.