10-06-2016, 04:05 AM
(10-06-2016, 02:43 AM)mbt28 Wrote: Hi,
Actually It is possible to make it with a tiny microcontroller but I want to use as less component as possible. I want to make all the logic work from pine64. If there is a way to make a pin state high from the beginning that would be great.
Depending on what voltage your board is, and what it's threshold voltage is for logic high, you could use the 3.3v output, as that is off (altough registering 0.3v on my meter) when the pine64 is not powered up. Check the pinout doc in my signature if you want to work out which pins to use - GND and 3v3 on either the RPi or euler headers.