4 x Unik 5000 pressure sensors

Other Hardware Sensors
1

Hi,

I'm am trying to get 4 Unik 5000 pressure sensors working using ads1115.

The sensor spec is,

0.28 to 7 barg
supply 7 to 32vdc
Output 0 to 5v

I have one sensor working using the below code, however I try I am unable to get 4 working in the code.

I cant work out how to map them to the adc 4 channels, I have tried many times adjusting the code but
keep failing. I know there must be something I keep missing as they are all the same range and spec (I know there will be minor differences with the offset but I'm hoping there is a simple way to do this.

Could someone please advise.

#include <Wire.h>
#include <Adafruit_ADS1015.h>
Adafruit_ADS1115 ads;
int16_t adc0, adc1, adc2, adc3;
void calcPressure (uint16_t Input, uint16_t Zero, uint16_t Max)
{
 uint16_t Span = Max - Zero;
 uint16_t Map = map( Input, Zero, Max, 0, 700);
 float adc0 = (((Input - Zero) /(float)Span)*700.0);
 Serial.print("AIN0: "); Serial.println(adc0);   
}
void setup(void)
{
Serial.begin(9600);
ads.begin();
}
void loop(void)
{
adc0 = ads.readADC_SingleEnded(0);
calcPressure (adc0,1000, 26700); 
delay(2000);
}
2

You have a simple example here with 4 channels, did you see it?

#include <Wire.h>
#include <Adafruit_ADS1015.h>

Adafruit_ADS1115 ads;  /* Use this for the 16-bit version */
//Adafruit_ADS1015 ads;     /* Use thi for the 12-bit version */

void setup(void) 
{
  Serial.begin(9600);
  Serial.println("Hello!");
  
  Serial.println("Getting single-ended readings from AIN0..3");
  Serial.println("ADC Range: +/- 6.144V (1 bit = 3mV/ADS1015, 0.1875mV/ADS1115)");
  
  
  ads.begin();
}

void loop(void) 
{
  int16_t adc0, adc1, adc2, adc3;

  adc0 = ads.readADC_SingleEnded(0);
  adc1 = ads.readADC_SingleEnded(1);
  adc2 = ads.readADC_SingleEnded(2);
  adc3 = ads.readADC_SingleEnded(3);
  Serial.print("AIN0: "); Serial.println(adc0);
  Serial.print("AIN1: "); Serial.println(adc1);
  Serial.print("AIN2: "); Serial.println(adc2);
  Serial.print("AIN3: "); Serial.println(adc3);
  Serial.println(" ");
  
  delay(1000);
}