HAB Part 4- Arduino Barometric Pressure, Temperature & Voltage

Part 4 of the High Altitude Balloon project build- Arduino SD Card Data Logging a barometric pressure sensor. This update/tutorial covers the addition of the Adafruit 992- MPL115A2 Baro/Temp Sensor 5 volt 12C device. This will allow us temperature and altitude measurement. As well I add a simple voltage divider circuit to measure the on-board 7.4 volt LiPo battery voltage. Should work great.

Basically the plan is to launch a helium filled latex weather balloon to approximately 100,000 feet carrying a payload of cameras, experiments and data logging equipment. This will put it in the realm of near-space/stratosphere.

I will post the construction videos/tutorials as we progress through the build.

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Cheers!

[markiverson]

You are a Saint!! Our code for our first launch did not work as expected. Slowly reworking everything and have been bashing my head into a wall until I saw your videos! Thank you! Thank you!! I will be in contact!

[brianjohnson]

If your building a sensor for a balloon that you hope will reach 40km why use a sensor that only works to 10km? From Adafruit "Pressure sensing range: 500-1150 hPa (up to 10Km altitude)"???

[jacopod]

Hi! Wich was the minimum pressure the MPL115A2 measured? The datasheet says only  500 hPa, but it's still too much for an high altitude ballon (500 hPa = 10 Km).

[youpattube]

Eric -
Thanks for making this series. I have been thinking about making a data logger for other types of data and didn't know where to start. Stumbling across your series was like striking gold.
However, in this episode you threw me for a loop. You set up a voltage divider between 5v and ground (with two equal resistors), yet instead of showing 2.5v on the analog input pin 0, it shows 5v. What ?

[romanlences]

Hi ! I want bmp, temp, humid datalogger but don't know work with arduino. Could you built one of this and send me by post please ? I'll pay all of material...