Welcome to the Pi In The Sky Project


Pi In the Sky is a simple and reliable GPS radio tracker board for the Pi.

This board is a GPS receiver and radio transmitter designed for tracking high altitude balloon flights.  It uses a UHF radio transmitter which is license-free in Europe (for other areas check your local regulations).  To track the location of flight you also need a radio receiver, aerial and PC on the ground.  Suitable radios include TV dongles - see http://ukhas.org.uk/guides:sdr_tracker for examples of suitable models and full instructions.

PITS+ Board for model A+, B+, V2 B

PITS+ Board for model A+, B+, V2 B

Together with the supplied, open-source software it embodies the experience of over 50 successful flights, about half of which have used the Raspberry Pi. 

It features:

  • Efficient built-in power regulator providing run time of over 20 hours from 4 AA cells
  • Highly sensitive UBlox GPS receiver approved for altitudes up to 50km
  • Temperature compensated, frequency agile, Radiometrix 434MHz radio transmitter
  • Temperature sensor
  • Battery voltage monitoring
  • Sockets for external i2c devices, analog input, external temperature sensor
  • Allows use of Raspbery Pi camera
  • Mounting holes and spacers for a solid connection to the Pi

The open-source software provides these features:

  • Radio telemetry with GPS and sensor data using UKHAS standard
  • Radio image download using SSDV standard
  • Multi-threaded to maximize use of the radio bandwidth
  • Variable image size according to altitude
  • Stores full-definition images as well as smaller transmitted images
  • Automatically chooses better images for download
  • Configurable via text file in the Windows-visible partition of the SD card
  • Supplied as github repository with instructions, or SD card image

You can purchase the boards here.

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