1. W

    Need help with idea of “common ground”/ review of my simple circuit

    Hello all, Could someone please help me with the below? I am essentially making a device that can raise/ lower my rf projector screen from the 12v trigger port on my projector. The idea is coming from this GitHub. https://github.com/ndoty/rf-projector-screen There are 3 pieces of hardware...
  2. F

    Resources for troubleshooting power supply board safely?

    tl;dr - I'm a newbie in Ghana trying to troubleshoot the power supply board for my projector that died in a power surge. I have replaced visibly compromised capacitor, but need to test others. Where can I find resources on how to do this safely? Hi all - I'm an American living in Ghana and my...