SKU_DFR1184_Gravity_2-Channel_15Bit_0-10V_ADC_Module WIKI

Introduction

The Gravity: 0-10V 15-bit High Precision Dual Channel ADC Module is specifically designed for high precision 0-10V analog signal acquisition, capable of achieving a resolution of up to 0.3125mV within a 0-10V voltage range with a measurement error <2mV. The module utilizes the Texas Instruments ADS1115 chip, which boasts an internal precision reference voltage and Programmable Gain Adjustment (PGA), thus offering stellar performance and reliability. The module supports I2C and UART communication, facilitating connection with microcontrollers, and is widely applicable to various 0-10V analog voltage signal acquisition needs such as temperature sensors, water level sensors, pressure sensors, etc. It is an ideal choice for industrial automation and environmental monitoring fields.

Features

Application

Specifications

Function Diagram

Number Interface Name Description
1 D/T I2C data line SDA or UART transmit TXD
2 C/R I2C clock line SCL or UART receive RXD
3 GND Power negative
4 VCC Power positive (3.3~5V)
5 I2C, UART switch Select I2C/UART communication mode
6 I2C address switch Switch I2C address, address info on back
7 AIN1 Input voltage signal 1 positive
8 AIN2 Input voltage signal 2 positive
9 GND Input voltage signal negative

Dimension Diagram

Serial Communication Description

Factory Parameters

Command Table:

Device Address Input Register Number of Registers Select Channel Read Device Address Read Register Address Read Voltage Data
0xCC 0x20 0x01 0x01
0x02		 0xBB 0x31 0x03

Reading Channel 1 Voltage Data via Serial Port

Host sends: 0xCC 0x20 0x01 0x01 //Select module device address and channel

Then send: 0xBB 0x31 0x03 //Read channel 1 voltage value

Serial AT Command Description

Command Meaning Return Value
AT AT Test Command OK
AT+AIN1=? Read AIN1 Channel Data AT+AIN1=
Decimal number, unit mV, keep two decimal places
AT+AIN2=? Read AIN2 Channel Data AT+AIN2=
Decimal number, unit mV, keep two decimal places

The following figure will show the voltage values of channel 1 and channel 2 read using AT commands respectively.

Note: If a command not listed in the table is used, it will return: ERROR

Arduino Usage Tutorial

Hardware and Software Preparation

Reading Data Using I2C

Wiring Diagram

Sample Code

Note: Switch off the power when switching the toggle switch

#include <DFRobot_ADS1115_0_10V.h>

#define MODULE_I2C_ADDRESS 0x4A
DFRobot_ADS1115_I2C ads1115(&Wire, MODULE_I2C_ADDRESS);

void setup() {
    Serial.begin(9600);
    while (!ads1115.begin()) { delay(1000); }  
}

void loop() {
  double data;
  data= ads1115.get_value(1); // Channel 1
  Serial.print(data);
  Serial.println("mv");
  delay(1000);
}

Results

Open the serial monitor to get the voltage value input from channel 1.

Reading Data Using UART

Wiring Diagram

Sample Code

Note: Switch off the power when switching the toggle switch

#include <DFRobot_ADS1115_0_10V.h>
#include <SoftwareSerial.h>

SoftwareSerial mySerial1(4, 5); // Set the RX and TX pins of the software serial port
DFRobot_ADS1115_UART ads1115(&mySerial1);

void setup() {
    Serial.begin(9600);
    mySerial1.begin(9600);
    while (!ads1115.begin()) 
    { 
        delay(1000); 
    }  
}

void loop() {
  double data;
  data= ads1115.get_value(1); // Channel 1
  Serial.print(data);
  Serial.println("mv");
  delay(1000);
}

Results

Open the serial monitor to get the voltage value input from channel 1.

More Resources for Download

Frequently Asked Questions (FAQ)

There are no customer questions for this product yet, feel free to contact us via QQ or forum!

For more questions and interesting applications, you can visit the forum for reference or posting.

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