Software is runnings now, but before I try to connect the gpio-output to the board input,
I checked the Voltage. And what I saw: 5 Volt between the board input and raspi-ground.
(both ground-levels are connected)
5 Volt seems to be to much for the gpio-output. opto-isolators an on the input-side....
where there are 5 volt?
is anybody using such a board together with a raspberry?
