Component tester : 2nd prototype, getting there
The 2nd prototype is about to be ready, still need to debug it a bit. The aim is to end up with a PCB at some point. The schematic as it is today (yes, i'm a kicad complete noob): About 60% of it is just some helper components to have the MCU up and running. Both STM32F103 and GD32F103 work The LMV324 is there to avoid error : The ADC is pulling ~ 1uA when sampling which could skew results for low value capacitor/high value resistor. If you really need to remove it, you can bypass it completely. As of today the following works with prototype 1 : Capacitor Resistor NPN/PNP transistor N & P mosfet Diodes Accuracy is ~ 2%