Is it possible to actuate muscle wire through Raspberry Pi ? This product expects ~200mA to revert to its original shape. If so, how would the circuit look like ? What resistors should I hookup ?
closed as off-topic by Ghanima♦, lenik, Milliways, Morgan Courbet, Bex Oct 22 '14 at 14:01
This question appears to be off-topic. The users who voted to close gave this specific reason:
- "This question does not appear to be specific to the Raspberry Pi within the scope defined in the help center." – Ghanima, lenik, Milliways, Morgan Courbet, Bex
All it requires is a switch of some kind to a voltage. It can be a Mosfet switch, triac, optocoupler (like in diagram) or a relay. Trigger the switch with a PIN.
Remember though, this stuff heats up (not sure how fast)! It has a ohms per meter specification too and a cool down period, depending on thickness. Its best to put a resistor on the negative side too to avoid short circuit by using Ohms law to calcalat e safe voltage drop. 5v to 2v for example.