Release Notes for Version 1.9.9

Version 1.9.9

This release contains a critical bug fix for a problem introduced in version 1.9.8 for TeleMega and EasyMega boards. This problem occurs when using the stored configuration from 1.9.7 or earlier.

If you are running 1.9.8 or are upgrading from 1.9.8 on any version of TeleMega or EasyMega, you must reconfigure all pyro channels, recalibrate accelerometers, reset the APRS interval, adjust the beep tone and reset the pyro time.


  • Fix EasyMega and TeleMega upgrade process from 1.9.7 or earlier. 1.9.8 introduced larger delay values, which required modifying the configuration in-place, and the 1.9.8 version had a flaw which broke the pyro channel config and all of the config values beyond that in memory, including APRS interval, IMU accel calibation, beep tone and pyro time.

  • Fix TeleMega v5.0 mag sensor driver. This driver was quite broken due to developing it in the presence of the magnetic beeper on the board. Because of that beeper, the values this sensor records are not accurate. Fortunately, they are not used for controlling the flight.


  • Parse TeleMega v5.0 log files. A missing check in the code meant that the TeleMega v5.0 log files would cause an error when attempting to load them. Logs saved with AltosUI 1.9.8 were not affected, only the presentation of the data was broken.