I've been trying to power the DC motor in a BB gun by use of a TIP120 transistor but to limited success. I was informed by a friend of mine who does electronic engineering that this transistor would be suitable. The gun is powered off 6V and draws around 1.5A. Ideally, a pin on the arduino would go from low to high and this would then fire the gun. However this is not the case. I have used a diode to prevent damage to the transistor.
My setup is pretty much the same as this video: https://www.youtube.com/watch?v=sOz41WQF7wE
If i connect the base of the transistor to the 5V output from the arduino, the motor twitches but does not spin properly.
Would someone be able to tell me where i'm going wrong? Cheers