Gy4725 I2C Dac Breakout Mcp4725 Digital To Analog Conversion Module

SPEICIFICATION:

12-Bit Resolution

On-Board Non-Volatile Memory (EEPROM)

±0.2 LSB DNL (typ)

External A0 Address Pin

Normal or Power-Down Mode

Fast Settling Time of 6µs (typ)

External Voltage Reference (VDD)

Rail-to-Rail Output

Low Power Consumption

Single-Supply Operation: 2.7V to 5.5V

I2CTM Interface:

Eight Available Addresses

Standard (100 kbps), Fast (400 kbps) and High Speed (3.4 Mbps) Modes

Small 6-lead SOT-23 Package

Extended Temperature Range: -40°C to +125°C

AEC-Q100 Grade 1 qualified

OVERVIEW:

-12-bit resolution

-I2C Interface (Standard, Fast, and High-Speed supported)

-Small package

-2.7V to 5.5V supply

-Internal EEPROM to store settings

PACKAGE INCLUDES:

1 PCS x Gy4725 I2C Dac Breakout Mcp4725 Digital To Analog Conversion Module

https://www.microchip.com/wwwproducts/en/en532229

//SOURCE CODE TAKEN FROM BELOW LINK

//https://circuitdigest.com/microcontroller-projects/arduino-dac-tutorial-interfacing-mcp4725-dac

#include<Wire.h>                   //Include Wire library for using I2C functions 

#include <LiquidCrystal.h>         //Include LCD library for using LCD display functions 

#define MCP4725 0x61              //MCP4725 address as 0x61 Change yours accordingly

LiquidCrystal lcd(2,3,4,5,6,7);   //Define LCD display pins RS,E,D4,D5,D6,D7

unsigned int adc;

byte buffer[3];                   

void setup() 

{

  Wire.begin();                    //Begins the I2C communication

  lcd.begin(16,2);                 //Sets LCD in 16X2 Mode

  lcd.print("CIRCUIT DIGEST");   

  delay(1000);

  lcd.clear();

  lcd.setCursor(0,0);

  lcd.print("Arduino");

  lcd.setCursor(0,1);

  lcd.print("DAC with MCP4725");

  delay(2000);

  lcd.clear();

}

void loop() 

{

  buffer[0] = 0b01000000;            //Sets the buffer0 with control byte (010-Sets in Write mode)

  adc = analogRead(A0) * 4;          //Read Analog value from pin A0 and convert into digital (0-1023) multiply with 4 gives (0-4096)

  float ipvolt = (5.0/4096.0)* adc;  //Finding voltage formula (A0)

  buffer[1] = adc >> 4;              //Puts the most significant bit values

  buffer[2] = adc << 4;              //Puts the Least significant bit values

  unsigned int analogread = analogRead(A1)*4 ; //Reads analog voltage from A1

  float opvolt = (5.0/4096.0)* analogread; //Finding Voltage Formula (A1)

  Wire.beginTransmission(MCP4725);         //Joins I2C bus with MCP4725 with 0x61 address

  Wire.write(buffer[0]);            //Sends the control byte to I2C 

  Wire.write(buffer[1]);            //Sends the MSB to I2C 

  Wire.write(buffer[2]);            //Sends the LSB to I2C

  Wire.endTransmission();           //Ends the transmission

  lcd.setCursor(0,0);     

  lcd.print("A IP:");

  lcd.print(adc);                   //Prints the ADC value from A0

  lcd.setCursor(10,0);

  lcd.print("V:");                  //Prints the Input Voltage at A0

  lcd.print(ipvolt);

  lcd.setCursor(0,1);

  lcd.print("D OP:");

  lcd.print(analogread);             //Prints the ADC value from A1 (From DAC)

  lcd.setCursor(10,1);

  lcd.print("V:");

  lcd.print(opvolt);                 //Prints the Input Voltage at A1 (From DAC)

  delay(500);

  lcd.clear();

}

15 days