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Sensor Board

Generic Info

  Board is connected using I2C to the Cubieboard

Sensors on Sensorboard

2x MS5611

  Absolute pressure sensor
  Range 10 .. 1200 mbar
  Resolution up to 0.012 mbar
  Adr 0x77 and 0x76 (7Bit)
  Datasheet www.meas-spec.com/downloads/MS5611-01BA03.pdf‎

MPU9150

  Gyro, accelerometer, magnetometer and digital motion processor
  Adr 0x68 (pin AD0 low) or 0x69 (AD0 high) (7bit)
  More information on http://www.invensense.com/mems/gyro/mpu9150.html
  Datasheet http://www.invensense.com/mems/gyro/documents/AN-MPU-9150EVB-00.pdf

AMS5915

  Differential pressure sensor
  Range 50mbar (max. 300 km/h IAS)
  Resolution <0,004 mbar (50 mbar, FSO 13107 counts)
  Adr 0x28 (7bit)
  Datasheet http://www.amsys.info/sheets/amsys.en.ams5915_e.pdf

(MS4525HRD - Not installed on sensorboard, would be an alternative to AMS5915, not yet available)

  Differential pressure sensor, possible alternative to AMS5915?
  24bit resolution (overkill?) and nice form factor (barbed connectors sideways)
  Pinout similar to AMS5915, maybe PCB layout could accomodate both sensors?
  Adr 0x77 and 0x76 (7Bit) - same as MS5611 and MS5803
  Datasheet http://meas-spec.com/downloads/MS4525HRD.pdf

Temperature Sensor DS1820

  Temperature sensor shall be mounted in free airstream -> not mounted on PCB
  Connector 3.5mm stereo plug
  LX8000/9000 uses the same sensor
  Datasheet DS1820 http://www.micropik.com/PDF/ds1820.pdf
  good accuracy, good form factor, not I2C but single wire interface

Other stuff

  I2C to single wire bridge
  I2C EEPROM for calibration data storage

NMEA Protocoll to XCSoar

Values provided to XCSoar

  IAS (AMS5915)
  Baro height (MS5611)
  TEK pressure (MS5611)
  Gyro and accelerometer (MPU9105)
  outside air temperature (??)

Interface Programm “sensord”