arduino four ADS1115 Modules

arduino four ADS1115 Modules

動機:

我需要使用8通道 16 bit ADS 所以將兩片ADS1115結合

軟        體:

  1.Arduino IDE 1.8.1
  2.library:https://github.com/adafruit/Adafruit_ADS1X15

準備模組:

  1.ads1115模組(使用上要特別注意VCC & GND)

使用前請記得去看一下ADS1115的資料手冊

可以看見我用螢光筆標住的地方,他可以直接使用腳位設定I2C的位址

一共有4個address 所以代表最多可以併到4個

接線圖

程式碼

這裡只打上要注意的地方

//********開啟範例後的樣子**********//

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

Adafruit_ADS1115 ads;  /* Use this for the 16-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.setGain(GAIN_SIXTEEN);    // 16x gain  +/- 0.256V  1 bit = 0.125mV  0.0078125mV
  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);
}

//********修改成下方就可以增加到四個了************

#include <Wire.h>

#include <Adafruit_ADS1015.h>

Adafruit_ADS1115 ads1(0x48);  /* Use this for the 16-bit version */

Adafruit_ADS1115 ads2(0x49);

Adafruit_ADS1115 ads3(0x4A);

Adafruit_ADS1115 ads4(0x4B);