I am building a home console stereo and I am going to use an RPi3 with a hifiberry dac+. And I am wondering if I can use a waveshare power relay to be able to control the power to the system from my phone. Is it possible to have two modules connected to one RPi or would I need to use 2 Pi's?
Here us a link to the power relay http://www.waveshare.com/rpi-relay-board.htm