DMM Piggyback (add RS-232) using PIC16F688 microcontroller
DMM Piggyback (add RS-232) There are mods that give a multimeter serial connectivity by soldering some pins but, it only works if it already has RS-232 ability. So I decided rather than building a PIC multimeter from scratch, I would Piggyback off a $4 DMM. I used: one PIC16F688 one LM358 a button and a […]
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