Why BMP180.

At present, I have chosen to go with the bmp180 sensor over the ms5611 sensor. I am aware of the very high accuracy of the ms5611. 

My reasons for the bmp180:
- 8x lower price
- already have code for it
- when interfaced with atmega328 3.3v (@8mhz), the bmp180 will run at (3.5mhz). I feel the 20mhz of the ms5611 will not be utilised effectively by the atmega chip, so a little bit pointless?

Maybe in the future, or to use in a flight controller, the ms5611 seems good. For the case of a ghetto-cheap altimeter-osd the bmp180 is ok.

Wiring done - part 1

Hi Guys,

Well, I made progress on my tiny osd build for the v929. As you can see from the pictures the altitude sensor is tiiiiiiiiiiny! I think the OSD will be 2g in weight.

BenbojanglesOSD v0.1
-3.3v
-atmega328 3.3v
-bmp180

+Wired up hardware
+Coded, and have altitude data in serial display

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Now to make video overlay. Advice, comments, and feedback appreciated.   

BenbojanglesOSD - for V929 quad

Hi all, I decided to try to build my own OSD for the v929/v212 or any micro-quadcopter with 3.7v.

I want: 
-light as possible
-Altitude display
-timer from liftoff
-(possibly) voltage sensor

I think for weight saving, I will be using a barometric pressure sensor to measure altitude as opposed to gps. Of course, gps will be too heavy, and requiring too much voltage.