Adafruit Mini Push-Pull Solenoid - 5V

Solenoids operate as electromagnets, utilizing a coil of copper wire and a central armature. Energizing the coil activates the solenoid, moving the armature inward. This specific solenoid is compact with a 20mm body and includes a captive armature featuring a return spring, allowing it to move effectively at ~5VDC and return to its original position upon deactivation.

Common solenoids often lack versatility, but this model pushes and pulls efficiently. The inclusion of mounting tabs enhances its versatility. To operate, a power transistor and a protection diode are required, and wiring it to a microcontroller, like an Arduino, is straightforward when following the proper diagram.

Finally, be mindful of its power demands as solenoids require significant current, approximately 1 Amp, to engage the electromagnet. Avoid using a computer's USB to power it, opting for a robust power supply to ensure efficient operation.