Not an HX712

A project log for Cat Feeder Watchdog

Hack a kitchen scale to check that my automatic cat feeder really delivers the amount of food I expect.

Enrico GueliEnrico Gueli 01/02/2021 at 17:210 Comments

I thought it was an HX712 load cell ADC, but after a cleaning and a thorough inspection instead this IC shows itself as an LM324DG. Lesson learned: never make optimistic assumptions...

In the meanwhile I also scratched/shorted some pads so now the scale thinks the battery is low - but I'm powering from a lab supply!

Time to buy a proper HX711-based module I guess.