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Topic: Arduino UNO output info! PLEASE! (Read 248 times) previous topic - next topic

ProStreet1

Does a Arduino UNO have enough output voltage and amperes to trip a standard automotive 12v dc relay?
If not what do I need to trip the relay.
I am looking to control multiple relays (4) that would carry higher volts and amps to control a 12 v dc motor.
If the UNO does not have that capability, what would you suggest?
Thank You!

Robin2

Does a Arduino UNO have enough output voltage and amperes to trip a standard automotive 12v dc relay?
It has neither the volts nor the amps. The max voltage from an Arduino I/O pin is 5v and the max safe current is about 20 milliamps.

You need to get the Arduino to switch a small transistor which, in turn, switches the 12v power for the relay coil.

...R
Two or three hours spent thinking and reading documentation solves most programming problems.

larryd

There are many ways to drive a load with the Arduino.

Here are some examples:




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