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DESCRIPTION
This module makes it easy to add an analog output to your microcontroller by digital-to-analog conversion based on the MCP4725, a controllable 12-bit DAC in I2C easy to implement.
Very useful in audio/analog when the PWM is not enough, just choose an output value and it will be available on the Vout.
It is possible to control 2 modules by the same I2C bus.
TECHNICAL FEATURES
Dimensions 0.71"x0.55"x0.1" (18x14x3mm)
Compatible with 3.4Mbps fast mode I2C.
EEPROM on the card to keep the selected voltage value in memory
Compatible with 3.3V to 5V (the selected output voltage cannot exceed the supply voltage)
LINKS/TUTORIALS
Implementation Tutorial (English): https://cdn-learn.adafruit.com/downloads/pdf/mcp4725-12-bit-dac-tutorial.pdf
Tutorial for use with a raspberry: https://learn.adafruit.com/mcp4725-12-bit-dac-with-raspberry-pi
MCP4725 data sheet: https://mchobby.be/data-files/datasheet/mcp4725.pdf
Ethan R.
Reviewed in Canada on April 11, 2022
Make sure to ground to your Arduino as well (SCL, SDA, GND to Arduino and VIN, VOUT, GND to device you are trying to control with variable voltage). Also make sure your arduino GND is the same voltage potential as the device GND!
salvatore
Reviewed in Italy on May 8, 2021
Ottimo prodotto
Jeffery Redmond
Reviewed in the United States on May 6, 2019
These worked great! Used them for a synth project and they worked out great.
S. A. ROBBINS
Reviewed in the United States on May 16, 2019
I am using this to control a power supply and it works just as expected with no issues. I used an available Arduino library and modified it for my application. Having this DAC board on the I2C bus really makes using it easy. The accuracy of this MCP4725 DAC will depend on how accurate your reference voltage is. I am using a precision reference so the accuracy is very good.
Mancho Sancha
Reviewed in the United States on May 21, 2018
Great value, well documented, easy to set up and use.I would have given 5 stars if I could have gotten an Eagle library that has this part in it.
PapySoft
Reviewed in France on December 26, 2018
Se commande très facilement sur le bus I2C. Inconvénient : seulement 2 adresses disponibles soit 2 voies maximum (2 cartes).
Clarke Bowers
Reviewed in the United States on November 24, 2018
Nice breakout board design. Soldering the header is easy. The MCP DAC is an old design and the manufacture's documentation is incomplete. Therefore, you are forced to use trial and error to understand the full functionality.
collins asiedu gyamfi
Reviewed in the United Kingdom on October 24, 2018
Was helpful way of simplifying our circuit Very useful
Horace Skinner
Reviewed in the United States on September 4, 2017
It works great just as advertised and expected.
Paco
Reviewed in Spain on August 24, 2017
Simple y pequeño, pero cumple perfectamente su función. Fácil de utilizar.Tiene la opción de usar una de dos direcciones para I2C, lo que permite poner dos en el mismo bus.También incluye en la placa un regulador de 5V a 3,3V. Yo lo he usado alimentándolo con 5V, y conectando a un bus I2C de un Arduino de 5V, sin problemas, aunque el chip que tiene es de 3,3V.
Josh
Reviewed in the United States on June 10, 2017
Adafruit, do I need to say more? :)
Customer
Reviewed in the United States on October 23, 2017
Worked good, decent user information and examples available
Jeremy A. Moore
Reviewed in the United States on April 22, 2017
Nice little board and was able to get the expected output quickly using the provided libraries as sample/starting points.
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