bolderflight / ms4525do Goto Github PK

I understand that the formula used to determine the pressure in PSI and temperature is from the "PRESSURE AND TEMPERATURE TRANSFER FUNCTION" section of the datasheet, rearranged to solve for the pressure or temperature, but I can't tell how you determined the pres_cnts_ and temp_cnts_, or where you derived the formula from. Could you please help me with this? Thank you!

Hello,

I work on a telemetry for my Calmato RC plane.

Can you explain me how to convert your result to a km/h speed please ?

Thanks,

Pierre

Hello,

Thanks for this library.
I try to build a telemetry for my RC plane and my MS4525DO return me negatives values.
My code is:

void MS4525DO_Init() {
  pres.Config(&Wire1, 0x28, 1.0f, -1.0f);
  if (pres.Begin())
    MS4525DOAvailable = true;
  else
    MS4525DOAvailable = false;
}

float MS4525() {
  /* Read the sensor */
  if (pres.Read()) {
    pressionMS4525 = pres.pres_pa();//*3.6 for km/h
    if (printPITOT == true)
    {
      /* Display the data */
      Serial.print(pressionMS4525, 2);
      Serial.print("\t");
      Serial.print(pres.die_temp_c());
      Serial.println("°C\r\n");  
    }
  }
  return pressionMS4525;
}

The sensor don't move and this code return me:
-140.46 27.67°C

It's normal ?

Thanks for your help,

Pierre