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Quick question for ps2 support in the future
Posted: Mon May 16, 2016 7:05 pm
by Kekskrümel
Hi,
do you use the same parts, wiring as
http://procrastineering.blogspot.de/201 ... r-for.html ?
Thx & Greetings
Re: Quick question for ps2 support in the future
Posted: Wed May 18, 2016 7:38 am
by Matlo
Hi,
Yes I'll try to keep the 8-bit AVR USB boards compatible with the latest software.
A voltage conversion is required because the PS2 pad interface operates at 0/3.3V levels.
Re: Quick question for ps2 support in the future
Posted: Wed May 18, 2016 8:59 am
by Kekskrümel
So not exactly the same wiring ?
Thx !
Re: Quick question for ps2 support in the future
Posted: Wed May 18, 2016 9:47 am
by Matlo
The same wiring may work, but I don't know if the PS2 tolerates 5V on the PS2 pad interface inputs.
A voltage level mismatch may damage the hardware after a while.
So it's safer not to use the exact same wiring.
The ACK and MISO signals should be converted from 0/5V levels to 0/3.3V levels.
It's either possible to use a logic level converter (< 2€, search for "5V to 3.3V converter" on ebay) or to use two voltage dividers (cost = 4 resistors). There is a voltage divider explanation here:
http://gimx.fr/wiki/index.php?title=RPi ... quirements
Re: Quick question for ps2 support in the future
Posted: Wed May 18, 2016 10:19 am
by Kekskrümel
Ok thx for the info.
I am waiting for the new wiring diagram.