DIY Arduino technical difficulties
So. You say you have build an Arduino on a breadboard, is that right?


Have you checked all the pins, so they are all connected up properly? Can you post some pictures of the protoboard? Maybe you missed something, didn't connect all GND pins to each other if there are more on the arduino or something.
You can power the Arduino using a 3.7 Lion or Lipol battery using a boost-converter, here is a great video explaining how you can build your own (https://www.youtube.com/watch?v=QnUhjnbZ0T8), or you can just order one from Ebay.


Great Scott (the author of the video) also made a video on how to create a standalone Arduino: https://www.youtube.com/watch?v=J3DYgzRvLT8 . Check the videos out! Hope I helped you.