Arduino powers Super Simple Electronic Component Tester


It was originally developed by Markus Frejek, but the project has been continued by Karl-Heinz Kübbeler and Markus Reshke. Simply insert the relevant component, push the button, and read the displayed characteristics.

For this version, the code comes in the form of a regular sketch for ease of uploading and modification (there are other versions that contain add-ons where the software comes as ready-made firmware (.hex file).

It’s estimated the project could cost less five dollars and be made in less than an hour. Specifically, the parts list includes a Nano R3, a 128 x 64 OLED display (SSD1306), a slide switch and seven resistors.


According to its creator, the autodetecting and auto-ranging electronic components tester can process:

  • PNP, NPN transistors
  • N or P channel MOSFET
  • Diodes, double diodes
  • Resistors
  • Capacitors
  • ESR of capacitors
  • Inductors
  • Thyristors, Triacs
  • IGBT transistors

You can see it’s Fritzing sketch below.

Read more on the Arduino Project Hub.





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