Finding An Active TX Pin On Cheap GPS. January 30, 2015 by Mike Szczys 33 Comments ... The controller runs off an Arduino Pro Mini-5v powered by two small coin cell batteries.

[Piotr] was working on a recent Arduino project when he ran into a problem. He was having trouble getting his Arduino Pro Mini to communicate with an ESP8266 module. He needed a way to snoop on the… ...

Another pin you can use on the Nano to power it up is the 5V pin (located on Pin 27, close to the VIN pin at the end of the board). This pin mostly serves as a power output pin that supplies power ...