I have two seperate circuits. One circuit is with an arduino doing some sensor readings. The second circuit is extremely high current, to create heat for moving nitinol.
This is what I am doing to test the circuit:
plus of the battery to the collector of the transistor digital out (pin 9) of the arduino to the base emmiter of thransister to led, to resistor, to minus of the battery (this is only to test, later on nitinol will replace the led)
I am sending pwm signals, fading back and forth from on to off on pin 9. However, nothing happens.
I will need to use PWM for my final circuit as well - is PWM what is messing this up?
Am I doing something obviusly wrong?
Any pointers would be apreceated