Gyroscopes

From PaparazziUAV
Revision as of 00:26, 19 April 2008 by Dconger (talk | contribs) (Sparkfun Breakout Board)

Jump to: navigation, search

Paparazzi ADXR Gyro board

CVS


Sparkfun Breakout Board

Example Gyroscope for MicroJet: this is the 150 degrees per second sensor from sparkfun. The sensor is a 5 volt sensor and will work without modification if you have a Tiny2.11 and in assembly used a 1.8k resistor on R12 and/or R13 (see Tiny2.11 page).

For Tiny1.3 or Classix Autopilots you will need to create a resistor bridge as their ADC is 3.3 volts. Using a resistor bridge of say 220k on 330k gives a nice 5 -> 3 volt conversion of the output. Ideally the gyro should be fed with very smooth stable 5V but as it will not be integrated but just used to help the slow thermopiles, the 5 Volts from the servos-receiver also work.

Note the cut tracks - the 2.5v and ST2 pins are re-purposed as the midpoint in the resistor bridges as they are not needed for tiny. These become our connections for Rate and Temp to the tiny.

Modified ADXR Sparkfun breakout board


cdewagter 12:59, 25 January 2008 (CET)