As the question says im building a circuit to run a DC motor whenever motion is detected on a motion sensor. Now as this image suggests
I need a diode + resistor + transistor to get this thing to turn with an arduino but i can do the same with a battery and connecting each of the terminals to the + and - of the battery. I understand this might be for speed control ? or turning the motor different ways ?
But if I just need it to spin at 100% would all this be needed ?
I tried hooking up the motor directly with a resistor to the 5V + GND of the board while it was on but no joy (obviously) doing something wrong but wanted to use this problem as a way to learn circuits better.