AutoQuad Forum

So after more testing around the power converter I discovered that the pins on the recom ( on the recom side of the board) were showing the correct voltages however testing voltage on the other side of the board where the recom pads/pins come thru the board the voltage on backside were showing 3.3v instead of 5v. So I flowed more solder into the holes and finally the voltages on both sides of the board where the recom sits showed normal.

Everything works now! Except my gps since I still need to repair the u.fl connecter on the M4. But at least I am back in the air. I have had no more crashes where the quad just suddenly flips- I think perhaps the recom issue caused that too., Thanks for the help guys!

Is there an easy way to tell which version of the N4 I have? Both of the n4s I have say version 1.1 on the board. One board was the "kit" which I am fairly sure is a 1.1. The second board (preassembeled) I ordered from flyduino about 2 weeks ago was advertised on the site to be a 1.2 version board- however the silk screen on the new board says version 1.1 as well.

Specifically I am trying to play with uart and am unsure if I need to open the BT solder point in order to power the uart...



Thanks

For anyone curious- the prebuilt n4 that is silkscreened v1.1 is capable of bluetooth and uart simultaneously.

Jessi promised to explain how to modify old version of N4 for get that.
Anybody know how?

Sry, I completely forgot about that.

The fix is very simple, just place a small signal diode across R11 as shown in the photo below.

I used Panasonic DB2S31600L

http://uk.rs-online.com/web/p/rectifier ... s/7105789/

Thank you!!!