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I have a couple of electronics projects in the works which use large LED displays and as they have a forward voltage of 8.4V and 20mA current they cannot be driven directly from a microcontroller using multiplexing. I could use a bunch of driver transistors or MOSFETS but that needs 14 pins on the microcontroller…
Just a quick one today – I obtained a lot of orange 0.4″ retro LED modules so I thought seem as I have a few blank PCB’s left over from my previous YouTube counter display I thought I’d make another. This one was for test purposes to see what else I could use a 4…