I read that the pins were only able to support 20mA-40mA each. Without connecting anything to the pin (other then my volt meter) I get about 80mA per pin and about 900mA if I measure the current between 5V and ground.
Are there any reference sites anyone can recommend to help me with creating a voltage/current multiplier? I'd like to eventually power up some motors and such and I can't seem to find a proper are for the information.
I'd like to make sure I didn't get a bum board.
For instance I have this relay shield by seeed studio http://www.seeedstudio.com/wiki/Relay_Shield_V2.0 . How do I connect an external power source when it doesn't come with that connection?
does not require a high voltage power source
This is why I am trying to build a circuit on the breadboard that will amplify my voltage so I can power up this relay shield properly.
I was trying to test the pin out current & the current between the 5V and ground directly and I get that 80 mA & about 900 mA respectively. I'm assuming that this is what the board is supposed to output and I am supposed to do my thing when it comes to current dividing and all that jazz?
The relay's will not kick in unless an external power supply is added to the green com "pin".
Are there any reference sites anyone can recommend to help me with creating a voltage/current multiplier?
Like I said before, I'm not worried about breaking stuff or burning things out or even how long it will last.
I'm basically looking to learn how to extend the voltage/amperage of the micro controllers in order to power what I'd like to make, which is a 4 motor, 4WD RC car. I don't want to buy a kit and put the pieces together.