e2vdavidb Posted November 29, 2021 Share Posted November 29, 2021 (edited) For fun I built an Arduino based altimeter. Its fairly easy if you can manage a soldering iron and have a friend with a 3D printer The code is also very basic and I´m sure someone could make a nicer display but I wanted: Pressure Altitude sea level Altitude relative to start of flight (starts at zero) Altitude up or down Temp I used a nice small display and it all runs off a 9V rechargeable battery. The case needs work but function I´m happy with. Its about 60 x 70 x 25 so quite small with a 1.7" display. Parts: Arduino mini pro (3 GBP Amazon) Adafruit DPS310 6.6 GBP Adafruit 1.69 Screen 15.5 GBP (probably you could go cheaper here but its a nice display) Switch 9V rechargeable battery Few wires and a 3D printed case. Files are here: https://www.thingiverse.com/thing:5150522 CODE_211121_Altimeter_Mini_Pro_V7.ino Edited November 29, 2021 by e2vdavidb Added files 3 Quote Link to comment Share on other sites More sharing options...
e2vdavidb Posted December 18, 2021 Author Share Posted December 18, 2021 Minor update to a case that is easier to print with FDM, this has less detail but is a stronger case and easier to assemble as lid is M3 screws. Also looking to add the Adafruit compass as probably heading is more useful than temperate. Temp is also in the case so not so useful. 1 Quote Link to comment Share on other sites More sharing options...
e2vdavidb Posted April 3, 2022 Author Share Posted April 3, 2022 Update to the code to display altitude in Ft and Meters. I also added a basic VSI that is . M/s but not yet calibrated. I will see how sensitive it is and adjust once its been flown. Quote Link to comment Share on other sites More sharing options...
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