Arduino Not running program on external power only

Forum 2005-2010 (read only) Hardware Interfacing
1

Hello everyone I am a bit of a noob to the arduino, I have created some interesting wearable stuff with it. But I can only get my programs on the ATmega168 and Arduino NG to run when connected to USB. When I have a 9v battery connected to it and the jumper set to external power, the power LED on the Arduino lights up but the program does not run. So I either need someone to give me a suggestion or find a retailer of USB cables about 22 miles long. :wink:

I have 2 arduino's an both do the same thing.

Do i need to program the AVR with the jumper set to external power or something?

Please help.

2

Hi, check out the troubleshooting guide: http://www.arduino.cc/en/Guide/Troubleshooting#toc1

3

Thanks for that bit of info but it doesn't correct the problem. The sketch is still in memory, the power supply is not noisy. The bootloader is on the board.

4

The problem's not that the power supply is noisy, but that the RX pin is floating. Did you try attaching the resistor?

5

Give me a second and i will give it a shot

6

You are a god among men. It worked.