Automatic Control and User Interface for Central Tire Inflation System

[Eyberg]

@marvin7

This here

@marvin7

Oh, see… he, he, you need to do some math here then! Basically pdf datasheet states it has sensitivity of 20mV/kPa and as 1kPa = 0,145PSI, then 1PSI = ~140mV of sensor output. And now the rest depends on ADC resolution and reference voltage. IF it would be typical ATMEGA, then it would be 10bit and typically 5V (or 1.1V internal) reference. Then it is 4.883 mV/ LSB for 5V Vref. (I prefer using 1,1V though)So psi = ADC / 28, correct me, if wrong. But i do not know the Arduino 101 board, which is not ATMEGA based.

This is from the code. an I am using 5v now!
const float BITS_TO_PSIUNIT_MXP4250 = 3.8425; // 1 bit = 0,038425 psi
Bust this use 5v