I mentioned that I will be making a new board to drive my matrix display and I have. This here is a DC-DC power supply for the new matrix driver. What makes this interesting is the method I used to turn on the power. I have plans to encase everything (RGB matrix + driver board + power supply board) up once it’s completed. There will be no external switches whatsoever. So, how does one switch on the power without any accessible switch? My answer is to use two regular rolling-ball tilt switches.
In case the title of this post didn’t give it away, this is a board that takes a low supply voltage, boost it up, and then regulate it back down to the correct voltage. In this case, 3.3V.
This board is meant to power an RGB LED matrix display that I’m working on. The input voltage will be coming from a pair of AA batteries.