# Ardupilot Mega ... 3.3v **URL:** \ **Category:** MicroMod\ **Tags:** avr-atmel\ **Created:** [May 14, 2010, 2:13am UTC](https://community.sparkfun.com/t/ardupilot-mega-3-3v/15750 "2010-05-14T02:13:24Z")\ **Posts on this page:** 2\ **Page:** 1
**Author:** ![FlyMario](https://avatars.discourse-cdn.com/v4/letter/f/58f4c7/32.png) [@FlyMario](https://community.sparkfun.com/u/FlyMario)\ **Post date:** [May 14, 2010, 2:13am UTC](https://community.sparkfun.com/t/ardupilot-mega-3-3v/15750/1 "2010-05-14T02:13:24Z")
Hi, I have purchased the Ardupilot Mega, locosys gps, 6dof board and other components for a UAV project. The issue I am running into is that everything seems to want 3.3v except for the Megaboard. I keep reading some hint of a 3.3v regulator on the mega and solder jumper. However I am not seeing any information on the Mega… Actually no good info at all. I know I can’t rely on the airplanes voltage so I will need some regulator so I am kind of lost here. Can anyone help me with this situation? Thanks ---
**Author:** ![TS-Feedback](https://avatars.discourse-cdn.com/v4/letter/t/d07c76/32.png) [@TS-Feedback](https://community.sparkfun.com/u/TS-Feedback)\ **Post date:** [May 25, 2010, 2:08pm UTC](https://community.sparkfun.com/t/ardupilot-mega-3-3v/15750/2 "2010-05-25T14:08:51Z")
Hey FlyMario, I did a little digging. It is very interesting to me that DIYdrones doesn’t address this issue more clearly. It seems like a issue that would be common. I think the answer would be to set up a 3.3V power line using a second voltage regulator from the VIN line. Then with the 3.3V line, you can power everything you want. The communication lines need to be the same voltage level though, so I would recommend a logic level converter. It safely steps down 5V signals to 3.3V and steps up 3.3V to 5V for communication purposes such as your case. [http://www.sparkfun.com/commerce/produc … ts\_id=8745](http://www.sparkfun.com/commerce/product_info.php?products_id=8745) Thanks, Tim