The Vin pin on a nano is non-regulated, right? So if I want to feed the nano via that pin, I need to regulate it myself?
What if its coming off of a lipo battery charger designed to output 5V?
Vin is a power input pin.
You need to supply a DC voltage to this pin.
~7.5V DC @500-1000ma would be ideal.
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Ok I dont have a >7V source. So I guess the best I can do is supply 5V through the usb port by splicing a usb cable.
Or supply 5V/Gnd to the Power Header.
USB cable would be more secure , limited to 500mA before the PTC fuse might come into play.
With Power header, you are bypassing the reverse polarity protection diode and the 5V regulator, be sure not to get the pins reversed.
Can also connect to the ICSP header:
1 MISO, 2 +5
3 SCK, 4 MOSI
5 Reset, 6 Gnd
Ok, which power header do you mean, the 5V pins? I thought those were for taking power OUT of the mcu?
Here is my setup:
That battery pack is connected to the right rail of that breadboard. It's meant to feed the sim900 currently connected to that rail. But now that I will disconnect the USB cable that powered the nano from the laptop, I need to power the nano from that battery pack. Can I just run wires from the rail to the 5v/gnd on the nano?
bump