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%

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