Thursday, November 12, 2015


Display Layout


       AIRSPEED    HEADING      ALTITUDE
   OIL PRESSURE    RPM           OIL TEMP

Status Update:

  • Connected the 1602 display
  • Laid out the display and  it looks clean and straight forward
  • Wired up the MPX2010DP(not the recommended part) and op-amp (see diagram below)
  • Tested the oil temperature probe which arrived on Tuesday.  1.8kOhm at 70F, dropped to 1kOhm quickly just by pinching it in my warm hands.  Simple voltage splitter will work nicely.
  • Started on the class that maps analog input to calibrated output.  Used on Airspeed, Oil Temp and Oil Pres.  Has to store the min/max input values, slope and y-intercept for translating.


Code Size: 5236 bytes so far.

I do not recommend using the MPX2010DP, instead use an airspeed module suggested in the prior post based on the MPX7002DP.  The latter has a very wide voltage response on pressure difference.  It does not require an op-amp to condition the signal for the ADC.




I'm still waiting on the 10DoF AHRS board, once that is here, I can make a lot more progress

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