Can i use a dc motor without a diode?
I get my diodes after three weeks...
Can you show the circuit that you are using to power the motor? Some driver chips (293D. 754410) have the diodes built in so external diodes are not necessary.
groundfungus:
Can you show the circuit that you are using to power the motor? Some driver chips (293D. 754410) have the diodes built in so external diodes are not necessary.
I didn't even started.
I wanted to know if it can be done without diode.
Then show how you want to drive the motor. You CAN NOT drive any but the very very smallest of motors directly with an Arduino. You must use a driver of some sort. A transistor driver for just one direction or an H-bridge for forward and reverse. Like I said, some drivers (and transistors) have diode(s) built in, some do not. Added: The diode is required, one way or the other, to prevent damage to whatever is driving the motor.
It depends, do you want to break your UNO?
The diode is there for protection.
Remember inductive loads can kick back 100's to 1000's of volts - protection
circuitry is mandatory (diodes are the simplest way).