Solenoid
welcome aboard > kit > sensors > small push-pull solenoid
- 24 DC operation (you can use 16-24 DC volts, but lower voltage results in weaker/slower operation)
- Push or pull type with 5.5 mm throw
- DC coil resistance: 100 ohms
- 5 Newton starting force (24VDC)
- 1.4 oz / 39 grams
- https://www.adafruit.com/product/3330
To drive a solenoid you will need a power transistor and a diode, check this diagram for how to wire it to an Arduino or other microcontroller. You will need a fairly good power supply to drive a solenoid, as a lot of current will rush into the solenoid to charge up the electro-magnet, about 100mA, so don't try to power it with a 9V battery!
This solenoid in particular is fairly small, with a 30mm long body and a 'captive' armature with a return spring. This means that when activated with up to 24VDC, the solenoid moves and then the voltage is removed it springs back to the original position, which is quite handy. Many lower cost solenoids are only push type or only pull type and may not have a captive armature (it'll fall out!) or don't have a return spring. This one even has nice mounting tabs, its a great all-purpose solenoid. src: adafruit.com
| guide | url |
|---|---|
| Adafruit: Biometric Lock Box Project | https://learn.adafruit.com/biometric-security-box |
| Adafruit: Mystery Box: The Nautical Crate Project | https://learn.adafruit.com/mystery-box-magnetic-latch |