The Zeta system includes the Zeta II altimeter and the ZetaPost postprocessing program.

Zeta II Altimeter

  • 15 x 25 mm
  • 3.1 grams including battery
  • ATSAMD21E18, 32-bit Cortex M0+, 48 MHz microcontroller
  • BMP580 pressure sensor
  • LIS3DH 3-axis accelerometer (+/- 16 Gs)
  • 20 Hz sampling rate
  • 1-cell 3.7V LiPo battery, 2-pin JST-PH-2.0 connector
  • Secure download using MicroUSB cable
  • FAI-approved for Spacemodelling competition events

ZetaPost

  • Download flight results from the altimeter
  • Apply temperatre correction
  • Use a Adaptive Median filter to remove spike noise and a Savitsky-Golay filter to smooth the data
  • Check results using Estimated Maximum Altitude method and flight accelerations
  • Store results to a text file
  • Print the display to a PNG file
  • Reset the altimeter for the next flight

ZetaPost can also import data from other altimeters or data sources via a CSV file.