Hello,
I want to interface HK1100C pressure sensor with arduino can you guide for programming part.The conversion of bar to pascal or bar to Mpa or pascal to psi.Though I am new to it. Plz guide me .
Do you know how to connect it ?
Can you use the sketch from the other topic ( analog Gauge Pressure sensor to arduino uno - Sensors - Arduino Forum ) to show the values from analogRead() ?
Red wire to 5V.
Black wire to GND.
Blue or yellow wire to an analog input.
Range 0-1.2 MPa
Output voltage 0.5-4.5V
That means when the output is 0.5V the pressure is 0.
When the output is 4.5V, the pressure is 1.2 MPa (or 1200kPa).
The pressure range is 1200kPa, which results into a voltage range of 4V (4.5V-0.5V).
int raw = analogRead(A0);
float voltage = (float) raw * 5.0 / 1024.0; // voltage at the pin of the Arduino
float pressure_kPa = (voltage - 0.5) / 4.0 * 1200.0; // voltage to pressure
float pressure_psi = pressure_kPa * 0.14503773773020923; // kPa to psi
Thank you so much it helps me alot
If this is for school, you have to know a source for the number of 0.1450377...
For example using Wikipedia as source : Conversion of units - Wikipedia
If this is not for school, you might still add comment, where that number comes from.
And the code lines becomes:
// Using the number from : https://en.wikipedia.org/wiki/Conversion_of_units#Pressure_or_mechanical_stress
float pressure_psi = pressure_kPa / 6.894757; // kPa to psi, according to Wikipedia
The * 0.1450377 is of course the same as / 6.894757.
if i use the above mention code i.e.
then at which arduino pin i can get the output?
int raw = analogRead(A0);
float voltage = (float) raw * 5.0 / 1024.0; // voltage at the pin of the Arduino
float pressure_kPa = (voltage - 0.5) / 4.0 * 1200.0; // voltage to pressure
float pressure_psi = pressure_kPa * 0.14503773773020923; // kPa to psi