Hi,
what is the maximum current of 5V pin (from USB)? Can I use it for battery charging at 500mA? It would be really helpful to have "normal" datasheet with all information for these products!
Thank you
Steven
Can I use it for battery charging at 500mA?
That sounds way too much to take from any Arduino
However, it may be OK if the 5V comes directly from the USB input rather than via any circuits on the Nano board
Also note that by default the +5v pin is not connected to anything, you have to solder a jumper pad to connect it to the USB. This appears from the schematic to be a direct connection to the USB connector, so you could take as much current as the USB port will supply, and the circuit traces on the arduino board can handle.
5V: This pin outputs 5V from the board when powered from the USB connector. Note: for it to work, you need to short the VBUS jumper on the back of the board. If you power the board from the VIN pin, you won’t get any regulated 5V and even if you do the solder bridge.
USB specifies a current limit of 100 mA. You can negotiate a current of up to 500 mA with the USB host. Most USB hosts do not enforce the current limit, but that is not a good reason to ignore the USB specification.