(04-06-2020, 09:52 PM)Baisey Wrote: Hello
I'm not sure where else to ask this question as it's not a Moode problem.
I have a PI 3B (running latest Moode) connected to an old NAD amplifier via a USB DAC. The pi has, connected via GPIO, an Adafruit OLED screen (SPI) and a on/off button that includes an LED.
LED setup - https://howchoo.com/g/ytzjyzy4m2e/build-...-indicator
Button setup - https://howchoo.com/g/mwnlytk3zmm/how-to...spberry-pi
My problem is that the amp turns the pi on/ off. I turn the amp on the pi turns off. I turn the amp off the pi turns on. I think the pi is receiving a power spike from the amp.
I cant figure this out. I think the pi and/ or the DAC is 'floating' but i don't know how to weigh them down.
Any help with this would be much appreciated.
Thank you
Paul
Hi Paul, it might be worth trying to break the common earth by using a galvanic isolator, now this isn't a true device as it doesn't use transformers but its worth a try:
Audioquest Jtterbug £36.00
A lot cheaper! £15.99
Nobsound ha!
