I would like to get a higher amp output

I have an Arduino UNO R3, I am using one of the digital outputs to switch power on and off to a step up board to give me a 12v output. However the amps are very low and the 12v bulb I am wanting to illuminate is drawing too much current. I would like to achieve a 5amp / 12v output but I am not sure how to do this.

Thanks, Daniel.

What do you mean by a "step up board"? Post a link to its datasheet and also post a diagram showing how you have everything connected.

You should NOT be trying to draw power from an Arduino I/O pin. Use the output from the Arduino to switch something else such as a suitable transistor or mosfet.


Hi Robin, thanks for the reply. I don't have any data sheet for the step up board but I looked into the transistor and that looks like the way to go. I'll have a go at that.

Thanks, Daniel.

5A will mean using a logic level MOSFET.