Another DGT3000 conversion

[Kiko Gomez]

Hi all,

finally I decide do the conversion from DGT3000 to DGTPi, but I dont like any of the wiring mods, so I design a small hat for Raspberry Pi with female jack conector so I can use the original cable of DGT3000. Also using two jumpers will be valid for RPi 3B/B+/A+ or RPi 4B

I order a small batch to China 5 boards (minimum quantity) and I hope in couple of weeks have the boards and components for test.

Here some photos of the design:

Note that in this last photo the 40pins connector will be installed in the bottom part of the board but render software dont let me do that without move the position of pin 1, so just imagine that is soldered in the bottom ;)

If someone wants schematics or gerber files just ask.

BR

Kiko

[Scally]

Hi Kiko,

That looks great, I was just checking the pin outs etc, which look correct.

I’ll buy one off you if I may, once you’ve checked it out and you’re happy with it.

Al.

[Kiko Gomez]

Hi Al,

thanks for checking this is the scheme that I did for the pcb:

And this the datasheet of the connector, because symbol is not clear:

BR

Kiko

[Kyle Washington]

That seems like a great way to do this.  I tried to order a HAT like this online, but I couldn't find anything available in the US.  So, I figured out the wiring mod... but this is pretty advanced!  You have done a great job.

Kyle

[Dirk Sommerfeld]

Hi Kiko,  how can I get one?

Dirk

[Kiko Gomez]

Hi Dirk,

still is on prototype stage, I just order first proto batch yesterday night, but dont worry I will keep this community updated, and I need to think how make this avaliable for everyone here with the lower cost possible, I spend 30€ in full 5 prototypes, components and PCBs so it will be really cheap.

I hope to have first batch for test in two three weeks, you know China delivery, then I will see.

BR

Kiko

[olivier magaud]

HI

When a jack plug is inserted, 3 and 4 are not connected! only 2 and 5 are connected to the jack!

stange .

[Kiname]

Yes oliver, true, small mistake, prototipe will need a shunt between 2&3 and 4&5. I will test with the shunt and check if something more is needed before order next batch.

BR

Kiko

[Kiko Gomez]

Hi all,

here the modified scheme and new pcb:

Thank you Oliver for checking 4 eyes see more than 2.

BR

Kiko

[olivier magaud]

hi kiko

it looks good to me

BR

olivier

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[Kiko Gomez]

Hi all,

I would like to know how many people will be interested on this project. I was doing some cost calculation and doing small batches (5 pieces) the cost will be 5,04€ each plus freight cost from Spain to your homes.

Will be distributed like kit, this mean PCB and components without soldering.

I dont know how much people will be interested on this but as much we are will be less will be the cost.

So, please for the next 15 days answer in this post with your nick and how much units you will be interested and let see if We can do it even cheaper.

BR

Kiko 

[Dirk Sommerfeld]

Hi Kiko, I will go for two !

[Luigi Vogliobene]

Hi Kiko, I will go for two too

[Scally]

Hi Kiko,

2 for me as well, thanks

Al.

[olivier magaud]

hi kiko

not for me.

not compatible with the radiator of my pi4

[Kiname]

Hi Olivier,

just for your information to check compatibility the Height of 2x20 female header is 8.5mm and the dimmension of the board is 55mmx25mm.

BR

Kiko

[Kiname]

Hi Olivier,

I just check nearest the photo and you have the protoboard directly welded to GPIO pins ... true? So will be not easy to install any hat.

BR

Kiko

[olivier magaud]

Hi Kiko

not welded! I

i adjusted a female socket welded onto a prototyping plate (with a file) so that it just fits.

it's a homemade hat, lol

[Kiko Gomez]

Hi Olivier

You have done a really good adjustment job, difficult to see the difference.

Good job.

BR

Kiko

[olivier magaud]

Thank you

The pi 4 dialogues well with my DGT3000LE, But I am still waiting for my "smart board" for the final tests.

BR

olivier

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[Puba Cajhen]

Hello, Kiko

count me in for two as well. Thanks.

sreda, 17. marec 2021 ob 14:11:38 UTC+1 je oseba olivier....@gmail.com napisala:

[Kyle Washington]

Key Kiko - you can count me in for two.  Would it be Paypal?  I think it would be a great thing to have!

I have been busy with work the last couple of weeks.  You guys can always use ky...@koolkid.com to reach me if I'm not on here...

Kyle

[Kiko Gomez]

Hi all,

prototype pcb & components arrive yesterday, and today I had time to assemble it and test it.

Test was successfully at first try:

Only one modification is needed, I will change the female jack in the PCB to accept also 4 poles connectors that at least in my case is the default cable.

Three poles (left one) is working perfectly but 4 poles (right one) is not because the last section (nearest to the cable) is not connected to GND in the PCB female connector

Even the switch off through clock ON/OFF button is working ;)

I will do the modifications during weekend and next week I will come back to you to inform about final quantity and prices.

Best Regards & good weekend.

[Scally]

Hi Kiko,

Good stuff, thanks for the update …

Al.

[Peter Eßer]

Hello. In the mail from kinam ... a photo with the DGT 3000 and Fat Fritz 2 is shown. Is there already a standalone IMG with Fat Fritz 2? If so, someone can send me this IMG. Greetings Peter

[Kiko Gomez]

Hi Peter, its a home made FAT FRITZ 2, stockfish 13 + FAT FRITZ 2 NNUE file.

BR

Kiko

[Scally]

Hi Peter,

I was going to put a link on my Dropbox where you can get the unofficial Fat Fritz NNUE file, not the file that is being sold for $$$, but I’ve been warned against this.

All I can say is that a file is available online, but it’s not as strong as the Stockfish NNUE files.

Sorry,

Al.

[Check Matus]

Hello Kiko,

Looks excellent.

I would like to jump in on the offer, please count me in for two units.

Thanks.

C.M.

[Henri]

Hi there Kiko,

Man, looks great, count me in for two units as well!

Thanks in advance,

Henri

Op zaterdag 27 maart 2021 om 19:59:47 UTC+1 schreef Check Matus:

[Peter Esser]

Hallo Scally,

Hallo Scally.
That would be great ! Greetings Peter
Saturday, March 27, 2021, 7:13:10 PM, schriebst Du:

Hi Peter, It’s a 100% cloned version of Stockfish with their own NNUE weights file. I can put it on the my shared Engines folder in my Dropbox if you want? Al@PicoChess:/opt/picochess/engines/armv7l-NNUE $ ./FatFritz2NN Fat Fritz 2 by Stockfish Devs and Albert Silver (neural network) Compiled for Picochess by Scally Or I can give you a link to the their NNUE file and you can use that for Stockfish NNUE? Your choice. Al.

On Saturday, March 27, 2021 at 4:56:53 PM UTC kinam...@gmail.com wrote:

Hi Peter, its a home made FAT FRITZ 2, stockfish 13 + FAT FRITZ 2 NNUE file. BR Kiko El sábado, 27 de marzo de 2021 a las 17:42:51 UTC+1, esse...@gmail.com escribió:

Hello. In the mail from kinam ... a photo with the DGT 3000 and Fat Fritz 2 is shown. Is there already a standalone IMG with Fat Fritz 2? If so, someone can send me this IMG. Greetings Peter kinam...@gmail.com schrieb am Samstag, 27. März 2021 um 16:04:43 UTC+1:

Hi all, prototype pcb & components arrive yesterday, and today I had time to assemble it and test it.

Test was successfully at first try:

Only one modification is needed, I will change the female jack in the PCB to accept also 4 poles connectors that at least in my case is the default cable.

Three poles (left one) is working perfectly but 4 poles (right one) is not because the last section (nearest to the cable) is not connected to GND in the PCB female connector Even the switch off through clock ON/OFF button is working ;)

I will do the modifications during weekend and next week I will come back to you to inform about final quantity and prices. Best Regards & good weekend. El sábado, 27 de marzo de 2021 a las 0:46:39 UTC+1, kw4au...@gmail.com escribió:

Key Kiko - you can count me in for two.  Would it be Paypal?  I think it would be a great thing to have! I have been busy with work the last couple of weeks.  You guys can always use ky...@koolkid.com to reach me if I'm not on here... Kyle On Thursday, March 25, 2021 at 12:29:27 PM UTC-5 Puba Cajhen wrote:

Hello, Kiko count me in for two as well. Thanks. sreda, 17. marec 2021 ob 14:11:38 UTC+1 je oseba olivier....@gmail.com napisala:

Thank you The pi 4 dialogues well with my DGT3000LE,But I am still waiting for my "smart board" for the final tests.

not compatible with the radiator of my pi4 Le mercredi 17 mars 2021 à 11:31:34 UTC+1, Scally a écrit :

Hi Kiko, 2 for me as well, thanks Al. On Wednesday, March 17, 2021 at 8:44:49 AM UTC lvogl...@gmail.com wrote:

Hi Kiko, I will go for two too Il giorno martedì 16 marzo 2021 alle 22:53:53 UTC+1 kinam...@gmail.com ha scritto:

Hi all, I would like to know how many people will be interested on this project. I was doing some cost calculation and doing small batches (5 pieces) the cost will be 5,04€ each plus freight cost from Spain to your homes. Will be distributed like kit, this mean PCB and components without soldering. I dont know how much people will be interested on this but as much we are will be less will be the cost. So, please for the next 15 days answer in this post with your nick and how much units you will be interested and let see if We can do it even cheaper. BR Kiko El martes, 16 de marzo de 2021 a las 21:15:17 UTC+1, olivier....@gmail.com escribió:

hi kiko it looks good to me BR olivier Le mar. 16 mars 2021 à 20:50, Kiko Gomez <kinam...@gmail.com> a écrit :

Hi all, here the modified scheme and new pcb:

And this the datasheet of the connector, because symbol is not clear:

BR Kiko El jueves, 11 de marzo de 2021 a las 21:35:29 UTC+1, Scally escribió:

Hi Kiko, That looks great, I was just checking the pin outs etc, which look correct. I’ll buy one off you if I may, once you’ve checked it out and you’re happy with it. Al. On Thursday, March 11, 2021 at 7:41:14 PM UTC kinam...@gmail.com wrote:

Hi all, finally I decide do the conversion from DGT3000 to DGTPi, but I dont like any of the wiring mods, so I design a small hat for Raspberry Pi with female jack conector so I can use the original cable of DGT3000. Also using two jumpers will be valid for RPi 3B/B+/A+ or RPi 4B I order a small batch to China 5 boards (minimum quantity) and I hope in couple of weeks have the boards and components for test. Here some photos of the design:

Note that in this last photo the 40pins connector will be installed in the bottom part of the board but render software dont let me do that without move the position of pin 1, so just imagine that is soldered in the bottom ;) If someone wants schematics or gerber files just ask. BR Kiko

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Mit freundlichen Grüßen,
Peter Esser

[Antonio Salmeron]

Hi Kiko, I am interested in your project. I would like to buy three units

Many thanks

[Kiko Gomez]

Hi all,

I have very good news for everyone.

This weekend I was doing some tests in Raspberry pi zero, 3B, 3A+ & 3B+, was working fine, but I found some problems with Raspberry Pi 4B, some times, the communication was not working, I try changing software, Raspberry PI, cables, I check the PCB about 1000 times, without any success, without reason with same setup some times work some times not.

Then I gone to the origin and check which hardware differences there are between RPi 3 family and RPi 4, and I found it, the RPi4 doesn't have pull-up resistances in the i2c pins, while RPi 3 is using two 1k8 external resistances, RPi 4 has nothing, and probably the internal ones are not enough when you are using two channels one master and one slave in parallel over same pins.

So I connect two resistances 99k, I dont have lower right now, but any upper to 1k8 can be valid, only need be the same for both lines, and start to work perfectly.

The wrap is to avoid shortcircuits ;)

So even that ones that use any other cable mod with RPi4 I will recomend use pull-up resistors to avoid problems.

Here is the new scheme and new PCB:

Modifications over the last one was:

- Change female connection to permit 4 poles cables.

- Change layout to small pi hat.

- Add pull-up resistances for RPi4

Last count that I did we was:

Kiko 3 units

Antonio 3 units

Henri 2 units

Matus 2 units

Wolfgang 3 units

Kyle 2 units

Puba 2 units

Scally 2 units

Luigi 2 units

Dirk 2 units

total 25 units will be aproximadly 4,80€ each kit (pcb + components) plus delivery.

Now I need calculate the deliveries, plese send me your full name, postal address and phone number if possible, to my email.

I Will place the order Wednesday, so if some one want to join us, be fast!

BR

Kiko 

[Scally]

Thanks Kiko, email sent.

Al.

[Peter Esser]

Hallo Scally,

Please give me the LInk. Greatings Peter

Monday, March 29, 2021, 5:16:49 PM, schriebst Du:

Thanks Kiko, email sent. Al. On Monday, March 29, 2021 at 3:17:49 PM UTC+1 kinam...@gmail.com wrote:

Hi all, I have very good news for everyone. This weekend I was doing some tests in Raspberry pi zero, 3B, 3A+ & 3B+, was working fine, but I found some problems with Raspberry Pi 4B, some times, the communication was not working, I try changing software, Raspberry PI, cables, I check the PCB about 1000 times, without any success, without reason with same setup some times work some times not. Then I gone to the origin and check which hardware differences there are between RPi 3 family and RPi 4, and I found it, the RPi4 doesn't have pull-up resistances in the i2c pins, while RPi 3 is using two 1k8 external resistances, RPi 4 has nothing, and probably the internal ones are not enough when you are using two channels one master and one slave in parallel over same pins. So I connect two resistances 99k, I dont have lower right now, but any upper to 1k8 can be valid, only need be the same for both lines, and start to work perfectly. The wrap is to avoid shortcircuits ;)

So even that ones that use any other cable mod with RPi4 I will recomend use pull-up resistors to avoid problems. Here is the new scheme and new PCB:

To view this discussion on the web visit https://groups.google.com/d/msgid/picochess/4282f710-71a2-4e66-8b92-a2df0349b666n%40googlegroups.com.

[DJ1KH]

Count me in for two units

[DJ1KH]

@kinam where can I find your E-Mail? Sorry I new to google groups

[Kiko Gomez]

Hi I sent a email to you.

[GPas...@aol.com]

Hi, 

would it still be possible to put the 3 pins for 3.3 volts,  5.0 volts and ground for a fan on the board?

the pin only interrupted, so that you can still attach a solder bridge or an "on / off switch for the fan?

 Gerd

[GPas...@aol.com]

Hi, is there a way to put 2 pin headers on top of each other so that I can get the cooling on my Pi 4? I could then print a new, higher housing upper part. Gerd

[GPas...@aol.com]

Hier noch mal das Foto mit 5 V der Pin steckte eben nicht auf Masse. 

[Kiko Gomez]

Hi something like this:

Take care that the PCB is 65mm x 24mm and the Height of 2x20 female header is 8.5mm.

Only problem that I see to this is that those pins are live, and if they are not used must be isolated in some way, for example with heat shrink tube or not install the pins.

Finally pullup resistances was not needed, problem was too much flux in three of the weldings. :(

BR

Kiko

[Kiko Gomez]

Hi,

you can install something like this to raise up the board.

[Kiko Gomez]

Hi all,

I only receive 5 confirmation email and Im a little bit confused about how many people are interested in the Picochess hat.

At this moment I have confirmation from:

Gerd Paschke 
Mr A.J. Cooper 
Antonio Salmeron Mateos 
Henri Spijkerman 
Klaus Hausmann 

I will place the order tomorrow morning, and I only will order the ammount of PCBs confirmed at this time counting me 15 pieces.

Please send your confirmation email with your data ASAP.

Best Regards

Kiko  

[Etienne Chaffanjon]

Hi Kiko, I did send you my address. Didn’t you receive it?

Best R, Etienne

To view this discussion on the web visit https://groups.google.com/d/msgid/picochess/44de28c9-0621-42c0-b0ad-831f40d12871n%40googlegroups.com.

[Kiko Gomez]

Hi I sent you a email Etienne.

BR

Kiko

[GPas...@aol.com]

Hi, 

the connections for the fan look good. I'll use the high pin bar. 

Do you have an order number or do I have to get the bar myself? 

2 holes for a switch to turn off the fan can they still be inserted? 

The mass of the conductor path to the pin header only has to be interrupted. 

Thank you for the great work. 

  Gerd

[Kiko Gomez]

Hi,

the switch can be added,  thats not a problem, I will show you this afternoon, today I have a business travel. But I would like to know the opinion of the rest of people about this, because this add will mean a small increase on price because the switch about 0,7 euro, and not everyone are using fans specially in RPi 3 family.

I need to know if include it in the main design or as second version.

Please comment.

BR

Kiko

[Kiko Gomez]

Hi all,

this is last design with pins and switch for fan in 3.3 & 5v.

Finally I will order 20 units.

Gerd P.  -------> 3

Scally ---------->2

Antonio S. --> 3

Henri S. ------> 2

Klaus H. -----> 2

Etienne C. --> 2

Kiko -----------> 6 (3 for me and 3 on reserve)

Final price increase a little bit because of less people, last calculation was done with the 30 reserves that I had, and the two components added so now total is 5,21€ per kit.

I will do the order tonight 22:00 GMT+2, if someone have some comment.

BR

Kiko

[Kiko Gomez]

Hi

Updated list

Total 25 units

Gerd P.  -------> 3

Scally ---------->2

Antonio S. --> 3

Henri S. ------> 2

Klaus H. -----> 2

Etienne C. --> 2

Shivaji -------->1

Jonathan C. --> 2

Puba C. ------>2

Kiko -----------> 6 (3 for me and 3 on reserve)

BR

Kiko

[Wolfgang Zugrav]

Hello Kiko!

 

Unfortuntely you've lost my registration for 6 units.

Pls. check mail.

Thx. Wolfgang

 

 

Gesendet: Mittwoch, 31. März 2021 um 16:01 Uhr
Von: "Kiko Gomez" <kinam...@gmail.com>
An: "PicoChess" <pico...@googlegroups.com>
Betreff: Re: Another DGT3000 conversion

To view this discussion on the web visit https://groups.google.com/d/msgid/picochess/31983787-3bd6-4486-be84-015f18ad08b5n%40googlegroups.com.

[Kiko Gomez]

Hi Wolfgang,

I was able to add your order, I sent you a email.

BR

Kiko

[Kiko Gomez]

Hi

Last Updated list

Total 35 units

Gerd P.  -------> 3

Scally ---------->2

Antonio S. --> 3

Henri S. ------> 2

Klaus H. -----> 2

Etienne C. --> 2

Shivaji -------->1

Puba C. ------>2

Jonathan C. --> 2

Marius B. ---> 3

Moj S. ----> 2  (* Postal address missed , please resend)

Wolfgang ---> 6 (*Postal address missed, please resend)

Kiko -----------> 5 (3 for me and 2 on reserve)

Orders are closed because PCBs will go in production soon, after that provider dont admit modifications.

Best Regards

Kiko

[Kiko Gomez]

Hi all,

The order start in production, final price was 4,94€ per kit, now Im checking best and cheapest way to distribute it, during next days you will receive a email with the delivery price and payment conditions but dont do the payment until I tell you or publish here, I want check it before distribute it.

According the timming of first prototype the kits must be here in 10 days if they are not comming by ship ;)

BR

Kiko

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[Kiko Gomez]

Hi all.

I have a bad news, I just receive the production batchs, PCB & components, and I did a mistake with components and design, the female 3.5 jack selected has a problem, it is valid for 4 poles 3.5 jack but 17mm lenght, when the jack connector from the cable provided with the board or the clock is 14mm lenght.

This make needed new design of the PCB and change that component, I will do that but now first I will order prototype batch (5 units) and after test it the production batch, I was very impacient with the last batch and now I have 35 PCB that need a special cable (TRRS cable from 17mm to 14 mm), is not expensive cable, about 5,00€ but my idea was use the original cable so this is not valid.

Sorry again for the delay, this will mean about 30 days in total but like compensation I will send the original PCB and female jack of 17mm together with the new one and components, and price will be the same because it was my fault.

Please accept my apologies for the delay.

Best Regards

Kiko  

[Scally]

Hi Kiko,

Thanks for the update

I have emailed you ….

Cheers,

Al.

[Fully108]

Hi, 

I have totally missed this thread, is it to late to order a kit now?

[Kiko Gomez]

Hi Fully,

yes, you are still on time, please send me by email your postal address and ammount of kits you need.

BR

Kiko

[John Paul Parkins]

Kiko, 

Please could I jump on the band wago?

Would not mind two kits

Thanks

JP

[Fully108]

Kiko,

Did you get my email? Not sure if I had the right adress.

Magnus

[Kiko Gomez]

Hi John, 

please send me you postal address.

Hi Magnus,

you have an email.

BR

Kiko

[John Paul Parkins]

Kiko,

The reply to author button is greyed out.

What would be the best way to get my details to you?

Thanks

JP

[Nimzovich]

Kiko,

I would like to order one board if it is not too late.

[Kiko Gomez]

Hi John and Nimzovich

you have a email asking your postal address.

BR

Kiko

[Kiko Gomez]

Hi all,

finally good news, new prototype arrive a work perfectly !!!!!

I buil it in "low profile" to be able to fit in my RPi enclosure.

Now doesnt matter which cable you use 4 pins (stock) or three pins (standard)

PicoChess Hat demo

Today I will order the production batch.

BR

Kiko

[Henri]

Hi Kiko,

Any news on the PicoChess Hat?

Greetings,

Henri

Op donderdag 6 mei 2021 om 12:57:11 UTC+2 schreef kinam...@gmail.com:

[Kiko Gomez]

Hi Henri
Still waiting for the production batch, looks like factory is having some production problems, I will inform everyone when PCBs arrive.

BR

Kiko

[John Paul Parkins]

Hi there all, 

If there any update on this?

Thanks