Shape Memory Alloy wire or springs are ‘smart’ materials that can be used to create mechanical actuation (movement). When an electric current is passed through the wire it heats up and so contracts with a large pulling force. When the current is removed the wire cools and so expands again (a ‘traditional’ steel spring is sometimes used to pull the smart wire/spring taut as it cools).
This program will activate a smart wire connected to output pin B.1 for a quarter of a second every five seconds. This will cause the smart wire to contract every five seconds.
main: high B.1 ; Activate the smart wire pause 250 ; Keep activated for a quarter of a second low B.1 ; Deactivate the smart wire pause 5000 ; Wait five seconds goto main ; RepeatCopy Code Submit an Example
Smart wire may be connected via a BCX38C darlington transistor create module (buzzer connected shown here).
| Description | Code | Qty | |
|---|---|---|---|
| FET | ? | 1 | Buy Now |
| 10k resistor (pack 100) | RES10K | 1 | Buy Now |
| 1N4001 Diode | RES041 | 1 | Buy Now |
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