Assembly

How to assemble the boards into the housings

Instructions

Test the scale to make sure that it generally works
Disassemble fully, keep the screws

Partially disassembled scale

Swap over the wires to the new, already populated PCB
Screw the new PCB back in

Soldered and semi-assembled scale

Measure the voltage input pins for shorts (to prevent stupid errors)
Power on the board with batteries or a lab bench power supply
Do the Bringup
Close the housing and screw it shut, don't pinch any wires or strip any screws
Do the Calibration
Done!