9 volt power to Duemilanove

Hi I am brand new to Arduino, and this is my first posting. I'm working on a sculpture project which involves fading LEDs in a power plant type structure. I am currently trying to figure out how to run this off of 9 volt power. I am including the specifics in the reply since I get an error message that I am not allowed to post links yet.

Hi, I'm very new to Arduino and electronics in general.

I have just completed my first project, but it runs off of USB power, and I'd like for it to run off of a 9 volt.

I used this code http://www.arduino.cc/cgi-bin/yabb2/YaBB.pl?num=1196702780/0#0

and this LED configuration and circuitry 久久久久久精品免费免费69-欧美另类videosbestsex-最好看的中文字幕视频2018-国色天香中文字幕2018

I have these 9 volt snap connectors http://www.solarbotics.com/assets/images/bhold9v/bhold9v_pl.jpg

I have absolutely no idea how to connect this. I'm not sure where to even put the positive and negative wires as I have practically no experience with electronics.

Any and all help will be greatly appreciated.

If that is your image then you have the Arduino Diecimila which has a plug for power. You need a 2.1mm center-positive plug. (In your pic it in the top left corner of the board.)

http://www.arduino.cc/en/Main/arduinoBoardDiecimila

Ah, that is not my image. I just configured my breadboard and Duemilanove in the same manner.

I was trying to avoid purchasing the 9 volt adapter, but I see that this
http://www.arduino.cc/playground/Learning/9VBatteryAdapter

is probably the best way to power my board, and my college might even have some of the 2.1mm power plugs lying around.

I guess there is no way to connect the board to the 9 volt without using a plug.

Thanks a lot.

You could solder it to the underside of the socket.

The Vin pin allows for unregulated power to be applied to the board. It is the same electrical connection as the DC Plug.

For what it is worth, you'd get far more time from some AAs than a 9v. The 9v has a very low current capacity.

Why not just stick the leads in the breadboard and then jumper Red to the Vin and Black to the Gnd pin on the Deumilanove? Am I missing something there?
Vin is connected to the input of the 5V regulator.

Why not just stick the leads in the breadboard and then jumper Red to the Vin and Black to the Gnd pin on the Deumilanove? Am I missing something there?
Vin is connected to the input of the 5V regulator.

@CrossRoads

If that's safe, I think it would be the easiest solution for me. I haven't soldered before, and if I don't have to, then that would be perfect

Sure -review the schematic here.

If you have a meter, measure the battery wires to make sure.

Thanks for the help everyone. I ended up finding a different solution for my problem. Instead of running my board off of a 9 volt, I ended up running it off of an iPhone charger.

http://lh3.googleusercontent.com/public/9HU7Aau8-WJ-rFD9LMtCE5lJGt3yl_PdRxJMXOYr9-i46n5YbPeeozEtGbrmPJ7FvWS_1GMIqzSuBLDVpM1It4YfLu38lV7AflMvlEGkCZM9T9jNS9YuSBRSpdBXRimpBQ2DFjUdxjbNXQanZ6NTxGN0dgvmWz7urzx8Ug

It's a US standard ac plug on one end and a USB port on the other.

That's one way to save on batteries :slight_smile: