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Description
DAC, like its namesake, is a high performance digital/analog signal convertor. Build with MCP4725,which is a low-power, high accuracy, single channel, 12-bit buffered voltage output Digital-to-Analog Convertor (DAC) with non-volatile memory(EEPROM).
Same as ADC, DAC communicates with I2C. The address is 0x60.
Product Features
- Up to 12 bits of resolution
- Output 0~3.3V voltage
- Program Platform: Arduino, UIFlow(Blockly, Python)
- Two Lego-compatible holes
Kit includes
- 1x DAC Unit
- 1x Grove Cable
APPLICATION
- MP3 Audio Player
- mini Oscilloscope
Documents
- Datasheet - MCP4725
Learn
Example
Arduino IDE
The code below is incomplete(just for usage). To get the complete code, please click here.
/*
hardware : m5stack uint dac
please install adafruit MCP4725 lib
*/
#include <Wire.h>
#include <Adafruit_MCP4725.h>
// new a object
Adafruit_MCP4725 dac;
// initialization
dac.begin(0x60);
dac.setVoltage(2048, false);
// 12bit value , false mean not write EEPROM
dac.setVoltage(1024, false);// input digital value "1024" to unit
delay(1000);
dac.setVoltage(2048, false);// input digital value "2048" to unit
delay(1000);More information
Schematic
PinMap
| M5Core(GROVE A) | GPIO22 | GPIO21 | 5V | GND |
| DAC Unit | SCL | SDA | 5V | GND |
