Example Code for Arduino-Dual-channel Voltage Output

Hardware Preparation

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?;

Wiring Diagram

Sample Code

#include <DFRobot_GP8XXX.h>

//#define SINGLE_CHANNEL
#ifdef SINGLE_CHANNEL
//Single-channel output IO port
int pwmPin0 = 9;
DFRobot_GP8501 GP8501(pwmPin0);
#else
//Dual-channel output IO port
int pwmPin0 = 9;
int pwmPin1 = 10;
DFRobot_GP8501 GP8501(pwmPin0,pwmPin1);
#endif

void setup() {

  GP8501.begin();

  /**
   * @brief. Configuring different channel outputs for DAC values
   * @param data pwm 
   * @n. Optional parameters (0-255) correspond to voltage ranges of (0-2.5V) or (0-VCC), and the specific voltage range is determined by the fluctuation switch selected based on the module voltage. 
   * @param channel. Output channel
   * @n  0:Channel 0  (effective when configuring PWM0 output.)
   * @n  1:Channel 1  (effective when configuring PWM1 output.)
   * @n  2:All Channels (effective when configuring Dual-channel output.)
   */
  GP8501.setDACOutVoltage(176,0);//At 0-2.5V voltage range, Channel 0 outputs 1.725V, whereas at 0-VCC voltage range, Channel 0 outputs 3.29V.
  GP8501.setDACOutVoltage(103,1);//At 0-2.5V voltage range, Channel 1 outputs 1.009V, whereas at 0-VCC voltage range, Channel 1 outputs 1.926V.

}

void loop() {

}

Result

After downloading the program, the measured output voltage of channel 0 under the 0-2.5V state is 1.725V, and the output voltage of channel 1 is 1.009V. Under the 0-VCC state, the actual output voltage of channel 0 is 3.29V, and the output voltage of channel 1 is 1.926V.