Thanks to Adafruit Prototyping Pi Plate Kit , I’ve setup a payload with RPI, OLED screen, OneWire temp sensor, GPS breakout and radio modules that
recorded picture and movies from the stratosphere with a OLED screen still
running fine at -50 degrees.
I’ve successfully recovered my HAB payload last week! The payload was
integrating a RPI with OLED screen, I’ve created a blog describing the
project (and linking to adafruit for the hardware) here.
…Since a couple of years, I was thinking about launching a high altitude balloon to the stratosphere. Taking my own pictures of blue atmosphere next to the blackness of space was a dream for me.
…I tried to include new experiments in the payload: testing the robustness of a display in stratospheric environment and taking full frame pictures/video in parallel with one RPI camera module.
The screen should handle extreme temperatures (-50 degrees C), deliver very high brightness images with low flickering. I have tested several OLED screen, selected the ILSOFT Oled model, then tuned the driver (sources available here) to increase the brightness and refresh rate by dividing the display height by 8 and optimising other parameters: the goal was to avoid flickering because of the camera shutter speed.
…The Rasperry PI will display the flight status on this screen (altitude, external temperature, …) while the RPI camera will be recording. The temperature and brightness requirements with ILSOFT OLED have been successfully validated during the stratospheric flight! ….
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Stop breadboarding and soldering – start making immediately! Adafruit’s Circuit Playground is jam-packed with LEDs, sensors, buttons, alligator clip pads and more. Build projects with Circuit Playground in a few minutes with the drag-and-drop MakeCode programming site, learn computer science using the CS Discoveries class on code.org, jump into CircuitPython to learn Python and hardware together, TinyGO, or even use the Arduino IDE. Circuit Playground Express is the newest and best Circuit Playground board, with support for CircuitPython, MakeCode, and Arduino. It has a powerful processor, 10 NeoPixels, mini speaker, InfraRed receive and transmit, two buttons, a switch, 14 alligator clip pads, and lots of sensors: capacitive touch, IR proximity, temperature, light, motion and sound. A whole wide world of electronics and coding is waiting for you, and it fits in the palm of your hand.