Example Code for Arduino-Voltage Output of Gravity: GP8503 2-Channel 12-bit I2C DAC Module

This article offers example code for Arduino to demonstrate voltage output in two states, showing how specific input values affect the resulting voltage.

Software Preparation

Download Arduino IDE： Click to download Arduino IDE
Download Arduino libraries： Click to download https://github.com/DFRobot/DFRobot_GP8XXX

Click the link to view：How to install the library?;

Note: All modules in this series utilize the same library.

Wiring Diagram

Sample Code

#include <DFRobot_GP8XXX.h>

DFRobot_GP8503 GP8503;

void setup() {

  Serial.begin(9600);

  while(GP8503.begin()!=0){
    Serial.println("Communication with the device has encountered a failure. Please verify the integrity of the connection or ensure that the device address is properly configured.");
    delay(1000);
  }

  /**
   * @brief. Configuring different channel outputs for DAC values
   * @param data. Data values corresponding to voltage values
   * @n (0 - 4095).This module is a 12-bit precision DAC module, hence the values ranging from 0 to 4095 correspond to voltages of 0-2.5V or 0-VCC respectively. The specific voltage range depends on the selection of the module's voltage fluctuation switch.
   * @param channel Output Channel
   * @n  0:Channel 0
   * @n  1:Channel 1
   * @n  2:AII channels
   */
  GP8503.setDACOutVoltage(2654,0);//At 0-2.5V voltage range, Channel 0 outputs 1.62V, whereas at 0-VCC voltage range, Channel 0 outputs 3.23V.
  GP8503.setDACOutVoltage(1095,1);//At 0-2.5V voltage range, Channel 1 outputs 0.668V, whereas at 0-VCC voltage range, Channel 1 outputs 1.334V.

  delay(1000);

  //The set voltage is saved internally in the chip for power-off retention.
  //GP8503.store();
}

void loop() {

}

Result

After downloading the program, the measured output voltage of channel 0 under the 0-2.5V state is 1.62V, and the output voltage of channel 1 is 0.668V. Under the 0-VCC state, the actual output voltage of channel 0 is 3.23V, and the output voltage of channel 1 is 1.334V.