A solenoid consists of a steel plunger inside an electric coil which is wrapped around a tube. When the coil is energised a magnetic field is created, and this draws the plunger into the tube. When the coil is de-energised a spring pushes the plunger back out of the tube.
The plunger can be used to allow or prevent flow through of air or liquid through another tube or chamber. This combination is called a solenoid valve.
This program will activate a solenoid valve connected to output pin B.1 for a quarter of a second every five seconds. This will give a short burst of air or liquid every five seconds when the valve is connected to an air or liquid supply.
main: high B.1 ; Activate the solenoid valve pause 250 ; Keep activated for a quarter of a second low B.1 ; Deactivate the solenoid valve pause 5000 ; Wait five seconds goto main ; RepeatCopy Code Submit an Example
A 5V solenoid valve may be connected via a BCX38C darlington transistor create module (buzzer connected shown here).
| Description | Code | Qty | |
|---|---|---|---|
| 6V Solenoid Valve | REL005 | 1 | Buy Now |
| FET | ? | 1 | Buy Now |
| 10k resistor (pack 100) | RES10K | 1 | Buy Now |
| 1N4001 signal diode | RES041 | 1 | Buy Now |
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