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Pluggy McPF adapter not working

Posted: 14 Jan 2025, 08:12
by Sparhelt
Hi,

I have a strange problem. My Gigatron works fine with a controller, but the Pluggy adapter refuses to work with a ps-2 keyboard. I have tried both available images, but most of the reactions are that the keyboard does the power on initialization (3 leds light up and then go out) but then does nothing, numlock, capslock do not work and have no effect on the Gigatron. The keyboard is fine when connected to a computer. I checked the panel and it is fine. I would appreciate tips on what to check and how to check it.
TIA,

Balázs

Re: Pluggy McPF adapter not working

Posted: 17 Jan 2025, 13:36
by Phibrizzo
Hello :)

Long time ago i did it something like this:

Image

I used plans from McFP archive
It working very well on first plugin. Tested with two differents PS/2 keyboards.

Are You sure your circuits PCB is correct? Or use correct batch for ATtiny?

Re: Pluggy McPF adapter not working

Posted: 25 Jan 2025, 11:26
by Sparhelt
Hi! Thank you for your answer.
What do you mean by correct batch? Caption of the ic is Atmel 20U tiny85. The panel seems good.
I tried both bin files on the page. I wrote and checked back with a T48 programmer, the writing was error free. The gigatron booted up immediately after soldering without any errors, this little nothing with only one component, not.

Re: Pluggy McPF adapter not working

Posted: 25 Jan 2025, 13:04
by Phibrizzo
What do you mean by correct batch? Caption of the ic is Atmel 20U tiny85. The panel seems good.
I used file from this page:
https://github.com/kervinck/gigatron-ro ... /BabelFish
File:
https://github.com/kervinck/gigatron-ro ... y85_v1.bin
With fuses:
https://github.com/kervinck/gigatron-ro ... _fuses.txt

Another problem maybe is with power supply on keyborad. Maybe is too low?