I need to connect a linear actuator with external powersource, so i can control it using the arduino UNO board. I've attached a photo of the hardware i'm using. The red wire gives a poweroutput of approx 12 V. When connected to the orange wire, the actuator extends, when connected to the green wir…

Wiring a linear actuator with external power source - 3 wires.

system April 16, 2014, 11:51pm 8

Why is there nothing connected to pin-3 of transistor ? If it is NPN then that's the emitter.
It should go to GND.

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