Portable mobile USB charger to power Nano

Other Hardware Motors, Mechanics, Power and CNC
1

Hello

Could a portable USB mobile charger like this be used to safely power an Arduino Nano?
http://www.amazon.co.uk/gp/aw/d/B001HG1ZFK?qid=1391877851&sr=8-8

They claim several thousand mah with a 5v 1a or 2a output, which would be useful. Could I use this to power the Nano from the USB socket?

This is just to power the Nano, I'm planning to use 4xAA rechargeable for the motors on my planned robot.

Thanks
Andrew

2

The problem is, you either need a very reliable 5V ( and no more ) supply to feed into the Nano 5V input, or you need something 7V or a bit more to feed into the Nano input which gets regulated down to 5V.

So if your supply provides 5.5V or 6 V then it is not usable, either way.

3

Farfrae:
Hello

Could a portable USB mobile charger like this be used to safely power an Arduino Nano?
http://www.amazon.co.uk/gp/aw/d/B001HG1ZFK?qid=1391877851&sr=8-8

They claim several thousand mah with a 5v 1a or 2a output, which would be useful. Could I use this to power the Nano from the USB socket?

This is just to power the Nano, I'm planning to use 4xAA rechargeable for the motors on my planned robot.

Thanks
Andrew

Yes, in theory this could be used to power a nano board either via it's USB plug or via it's 5vdc pin. I would however want to measure the output voltage value of the device to see how close it is to exactly +5vdc. +5.5vdc is the maximum recommended Vcc for the 328p chip and +6vdc will damage it.

Lefty

4

Thanks both, that is good advice. I was guessing that mobile phones (which this is designed for) will also require exactly 5v, but I see the need for caution. I'll splice up a usb cable, and get a Multimeter on it. If it's greater than 5v, I'll just use 6xAA to pin 30.

Thanks again,
Andrew