News:

Printed Amstrad Addict magazine announced, check it out here!

Main Menu
avatar_abalore

SOYUZ: 16 bit parallel GPIO board for Amstrad

Started by abalore, 19:58, 11 January 22

Previous topic - Next topic

0 Members and 1 Guest are viewing this topic.

abalore


Gryzor

That made me smile :)

Also, I love the clicky sound of the 6128 keys...

abalore


Richard_Lloyd

Hi @abalore  nice project!


What value should the three resistors be? I plan to build one or two  :)


Thanks, Richard.
Richard
CPC464, CPC6128, PCW8512, PCW10, BSA & NSP

abalore

Quote from: Richard_Lloyd on 21:38, 12 January 22
Hi @abalore  nice project!
What value should the three resistors be? I plan to build one or two  :)
Thanks, Richard.
I use 10K, but any value between 1K and 10K should do the job.

abalore


https://youtu.be/N_RItkWr-Zo
I went one step further connecting the CPC to the Raspberry PI using the newly named SOYUZ board.
The test is done in BASIC, the next one will be in assembler and it's expected to reach transfers speeds of 2 Mbits/second.

zhulien

That is cool,  two CPC to PI alternatives.

issalig

First of all, thanks for sharing the project.

Are you connecting 5V signals to the RPi? I do not see any level shifter in your circuit and this can damage GPIO lines on the RPi.


abalore

Quote from: issalig on 16:32, 24 January 22
First of all, thanks for sharing the project.

Are you connecting 5V signals to the RPi? I do not see any level shifter in your circuit and this can damage GPIO lines on the RPi.
Hello, the level shifter is in the protoboard, made of basic resistor voltage dividers in the CPC -> RPi direction, and nothing in the RPi -> CPC direction. But I designed a proper "hat" for RPi interconnection, with mosfets and all the stuff. I'll get the PCBs to test this week or the beginning of next, and once the design is validated I'll share it here.

issalig

All ok, as I did not see it in the schematic I was wondering how did you manage voltages but now all is clear.

genesis8

#10
Nice project, I just wrote about it quickly, did I forget something, or want to add any text : https://www.genesis8bit.fr/archives/index.php?news_id=1792

Hmm, I forgot to add the github of Soyouz, correcting this now.
Doh, Soyuz, not Soyouz.
____________
Amstrad news site at Genesis8 Amstrad Page

abalore

Quote from: genesis8 on 18:53, 25 January 22
Nice project, I just wrote about it quickly, did I forget something, or want to add any text : https://www.genesis8bit.fr/archives/index.php?news_id=1792

Hmm, I forgot to add the github of Soyouz, correcting this now.
Doh, Soyuz, not Soyouz.
Thank you!

abalore

#12
Testing the RPi hat for Soyuz.

It manages the voltage levels for 8 inputs and 10 outputs (data+clock). It works with a standard hard disk cable.

It can be connected to either port A or port B of the Soyuz. When connected to port B, it provides a pass-through connector for port A.


zhulien

Quote from: abalore on 08:59, 27 January 22
It can be connected to either port A or port B of the Soyuz. When connected to port B, it provides a pass-through connector for port A.


Does that mean we can connect 2 x Pi's to the Soyuz?

abalore


zhulien

awesome, what is the cost of the Soyuz?

abalore

Quote from: zhulien on 12:45, 28 January 22
awesome, what is the cost of the Soyuz?
It's an open project, I don't plan to sell it. Anyway, when I'm happy with the latest prototype and make some software for it I'll consider making a small batch. At this moment I'm testing full screen video stream at 10 fps from the RPi to the CPC. I will post more news about that later.

Bryce

According to Wikipedia, approximately $80 Million per launch. :)


Bryce.

Gryzor

Quote from: Bryce on 12:58, 28 January 22
According to Wikipedia, approximately $80 Million per launch. :)


Bryce.


Apparently, less than half if you're Russian. Something akin to ordering from UK when in the EU.

zhulien

If we can 4 boards on 1 cpc and 2 Pis per board... so max 8 Pis per CPC?

GUNHED

Or even better: A quick network of CPCs  ;D
http://futureos.de --> Get the revolutionary FutureOS (Update: 2023.11.30)
http://futureos.cpc-live.com/files/LambdaSpeak_RSX_by_TFM.zip --> Get the RSX-ROM for LambdaSpeak :-) (Updated: 2021.12.26)

zhulien

can you put me down for 4 boards if you make a batch?

abalore

Quote from: zhulien on 23:27, 31 January 22
can you put me down for 4 boards if you make a batch?
Is ok for you to get the boards in DIY "kit" format?

zhulien

I prefer not a kit form as i likely won't be able to find time to make them.

abalore


Powered by SMFPacks Menu Editor Mod