RSS Feed
  • LinkedIn Black Round
  • Twitter Black Round
No tags yet.
Search by Tags

9V Battery Power

Tinkering with my 3D printer has taught me a lot about small electronics, but it's all been very specific to this one application. I wanted a better understanding of circuits, resistors, capacitors, etc... and how they work on a very basic level. So I picked up an Arduino and a bunch of components, and that's kept me well occupied for the last few weeks.

Screen Shot 2015-02-22 at 11.21.12 PM.png

So far the Arduino's been tethered to a computer to get power from the USB port. That's been ok for now, but I have a few projects in mind where I'll want a battery-powered stand-alone rig. I had been able to wire a 9v battery directly to pins on the board, but using the barrel jack would be a better solution. I salvaged parts from a few other things and it looked like I could make the component I needed.

IMG_6319_edited.JPG

It was hard to tell which wires were which, so I tested for continuity between the ends of the wires and the inside of the barrel (positive) and outside (negative).

IMG_6320_edited.JPG

After soldering this to the battery clip I could attach the battery and test the voltage at the jack before connecting it to the board.

IMG_6324_edited.JPG

Seems to work, the next steps will be add an inline switch to turn it on and off more easily, and 3D print a battery case of course.

IMG_6325_edited.JPG

#arduino #diy