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Basic modular description

A project log for Salvaged bathroom scales rewiring

Re-implementing the electronics in a digital bathroom scale, for. low power consumption and cost.

fractalFractal 07/20/2016 at 08:560 Comments

This is a rough plan of how the electronics will be joined up.

9V Battery->Diode(s)->5V rail -> All digital components.

Piezo->MCU

HX711->MCU (2 wires)

HT1621->MCU (3 wires, one shared with HX711)

LCD->HT1621 (Built into carrier board)

Half bridge+Set resistors -> HX711 (build on protoboard)

Reset-switch->MCU (build on protoboard)

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