So I designed and built two custom PCBs of my own design with no previous background in electronics before starting this project only a couple months ago. My main PCB would have worked just fine if I didn’t somehow get dislexic and switch the GND and power out pins on my voltage regulator…but a couple quick jumpers and scratched out traces later it works fine.
However for my second PCB, which goes along with the same project, the process of figuring out the problem was much more difficult for me to discover and eventually fix. I don’t however totally understand why it is working now. I used FreePCB to make my boards and I made a couple bitmaps of the original board (bad one) and how it should look (good one).
I’m using a 12V battery to supply power and that’s getting stepped down to 9V on my first board, then the 9 volts goes to some LEDS and also wires to this second board where a Really Bare Bones Board (Head) steps it down to 5V and I use the 5 volts to power a RF receiver (labeled RF) and then use wires to send that 5 volts back to another portion on my main board to power my shift registers.
I scratched out the GND trace lower right on the board, and removed it from the PCB in the pic. This solved the problem and my set-up works perfectly now, which is a great feeling. I’m just lloking to learn from this for furture projects hopefully to avoid making the same mistakes. Why did cutting that GND trace solve the problem? Aren’t GND runs supposed to be together?
Many thanks for anyone who can relay any insight.