Those little blue potentiometers are high-precision trimmers, and their resistance can be easily set to a specific value. They are used for fine-tuning circuits and adjusting settings like voltage levels, just like how I used one in my custom breadboard power supply (video here: [ Ссылка ])
Grab a kit from here:
🟢 Amazon US: [ Ссылка ]
🟢 AliExpress: [ Ссылка ]
