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Topic: Realy 3a (Read 513 times) previous topic - next topic



can someone tell me if i can use relay shield with 3A to controle a 12v 5w LED strip ?


Jan 12, 2019, 03:52 pm Last Edit: Jan 12, 2019, 03:53 pm by ballscrewbob
Yes and No.

(1) In part it depends on the length of the strip.
(2) Another aspect is to consider the LED TYPE as different LED's consume different amounts of current at full brightness.

If you have a single strip that takes only 5W at maximum brightness then you will be fine.

Your current configuration should draw approx 0.4 amps

For any other variation you need to consider at the very least the two points above,
To calculate properly you need to add the total Watts of each LED together to get a starting number.

Then you can use something like this to give you an exact value

Are you using an Arduino 101 board or should I move this to a more suitable section for you ?

It may not be the answer you were looking for but its the one I am giving based on either experience, educated guess, google or the fact that you gave nothing to go with in the first place so I used my wonky crystal ball.

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