I want to power a constant current LED (145mA & 200mA) at 19-21V.Since this will be powered by Li-ion battery connected to a tp4056, which is the most efficient way to boost the voltage from 3.7V ...
I am trying to control a remote via the gpio pins on a raspberry pi. I don't want to have to use relays because of the space they take up and the mechanical noise. The problem is the pads of the r...
If you have a high frequency signal, going through the collector - emitter of a general purpose transistor, can you just turn it on/of with a low frequency signal at the base?If you leave the transist...
can somebody advise (or if you are so very much kind provide) a pcb with the functions of a 8 by 8 macro keypad and 2 rotary encoders support and using the pro micro to be the brains of the macro keyp...
I need to control a really small LED and use the thinnest wire possible so it looks hidden. Magnet wire is very thin and might work but I want to know if I can control an LED with it?
