2 layers75.7 × 80.9 mm

Nocodephprobe
cristoper/nocodephmeter
A pH meter for use with inexpensive pH probes (for gardening, home experiments) with temperature compensation and digital readout but no microcontroller
52 parts3MIT
KiCad boards from 1 GitHub repository tagged “ph-meter”, the most starred first; open any of them in PCBKit.

cristoper/nocodephmeter
A pH meter for use with inexpensive pH probes (for gardening, home experiments) with temperature compensation and digital readout but no microcontroller