This is a component tester similar to LCR-T4. It is based on an open-source project and I designed a PCB for it. You can test multiple BJTs, FETs, Diodes, and any values of Capacitors, Inductors, and Resistors.

Other features are such as :
  -Automatic pin detection.
  -10-bit PWM.
  -Has Calibration ability.
  -9V battery to power the circuit.

I designed the PCB with EasyEDA, printed it on Glossy paper, and transferred the print to a raw copper board. Then I used FeCl3 acid to remove unused copper. For soldermask, I just covered the copper areas with solder.


Project link: https://create.arduino.cc/projecthub/plouc68000/ardutester-v1-13-the-arduino-uno-transistor-tester-dbafb4
EasyEDA  design: https://oshwlab.com/Soroosh/component-tester