Reddit:Electronics

My buddy dead bugged a QFN, he is so much more patient than I am. Apparently the engineer connected the belly pad to the wrong voltage

But ıt burned because ı forgot to add rezistors a and b

I'm in the process of stripping this old scoring machine down to replace the insides with an Arduino. I think this machine dates back to the 1960s. Interestingly, it only has modes for Épée and foil (no saber), but yeah it is a fairly interesting piece of history.

Just

Took this out of a unit cause it wasn’t turning on, flipped it over and multiple resisters and caps were gone. Most likely a power surge. Thought would be interesting to post cause don’t see this every day

I’ve been working on this project for a while, and I’d like to share the progress here. I hope it will be interesting.This is ZX Spectrum 48k clone which I've designed and built myself. I've cheated a bit -- it has no video circuitry, HDMI video signal is generated by ZX-HD extension board(visible at the far side of the motherboard, I've bought it online). Next steps is USB keyboard adapter and 3D printed case.

Replaced for now. Phasing out this order equipment .

the frequency of this garage door remote. Thanks!