How to switch on power?

Diy and Tweaks Diy and Tweaks
1

I am in the proces of building a integrated streamer / DAC based on a RPI and am looking on a solution for switching everything on and off.
Am using 2 power supplies (one linear for the DAC and a SMPS for the RPI and screen) and wonder how I can manage to turn on and off both supplies and the RPI with a momentary push button. I don’t mind if I need a small third supply for that as long as the rest can power on and off.

Does anyone know of a device/solution for this?

2

Google “raspberry pi power switch” and there are some options to buy and information about how different setups work. reddit discussions, rpi vendors, etc.

3

Found a solution: one button of a rotary encoder is wired to GPIO 3 so it wil shutdown and startup the Raspberry PI and the display… well… they are in standby mode and the SMPS power supply is stil “hot” but that is not an issue.
I wil use a 5v relay to switch power of the linear power supply so it powers on by script (controlling a GPIO pin)

4

Hi,
Check this one:

5

ok this is a 12v trigger system to couple it to a pre-amp/amp. Interesting!

6

Hello Wil, for the Pi/DAC/SSD side of things, this may come in handy:

Greetings, Timo