barometric pressure

[payman]

I have now managed to get everything working but I was wondering if anyone could help me with attaching a pressure sensor (MPL3115A2 ) to my unit I have one of these units but don't know were to solder all the legs to .

[Winged_Jaguar]

I'm about to add this sensor too.

This article is helpful http://ciaduck.blogspot.co.uk/2014/12/mpl3115a2-sensor-with-raspberry-pi.html

Connections from the mpl3115a2 board routing back to these Pi connection pins

Pin 1 VCC 3.3v
Pin 3 SDA
Pin 5 SCL
Pin 6 GND

Chris

[Ian Melville]

Connections are covered here...

http://forum.pilotaware.com/index.php/topic,233.0.html

[neilmurg]

Also handy pictures here: http://forum.pilotaware.com/index.php/topic,57.0.html
Which is adding baro to slice of POD. I think somewhere it says that the 3.3v pin out on the PI isn't strong enough, so you need a Slice of POD, digole board or similar (I barely know what I'm saying at this point)

[Winged_Jaguar]

The MPL3115A2 is a low current device and appears to be fine on the Pi 3.3v. The ARF needs its own 3.3v feed to power the transceiver.