Go Down

Topic: Using resistances (Read 453 times) previous topic - next topic

Hi, I'm begginer in electronic and I connected a dc motor and a led to digital pins in PWM mode of the arduino board without a resistance (I connceted them directly), I want to know if do that is damaging for the arduino board or only is bad for the Led or the motor that use 5v, for that I think that the motor don't need a resistance. It's true?
Thanks.

Magician

You damaging arduino. Use resistors with leds, for motor you need transistor.

JimboZA


.... for motor you need transistor.


And a diode to take care of the back emf when the motor stops, as explained here.

"Could you do the egg bacon spam and sausage without the spam then? "

No PMs for help please.
DO NOT power servos from Arduino 5V: give them their own power and connect the grounds.

The Clever Monkey


Hi, I'm begginer in electronic and I connected a dc motor and a led to digital pins in PWM mode of the arduino board without a resistance (I connceted them directly), I want to know if do that is damaging for the arduino board or only is bad for the Led or the motor that use 5v, for that I think that the motor don't need a resistance. It's true?
Thanks.


See here: http://www.arduino.cc/playground/Main/InterfacingWithHardware#Physical_Mechanical
I yield() for co-routines.

Go Up