MCP4725 12-bit DAC breakout con ESP32

Alimentazione 3.3-5 V Bus I2C Indirizzo I2C 0x60 / 0x61 / 0x62 / 0x63 / 0x64 / 0x65 / 0x66 / 0x67

Pin e collegamento all’ESP32

Pin	Ruolo	Pin ESP32	Note
VCC	Alimentazione	3V3
GND	Massa	GND
SCL	Clock I2C (SCL)	D22
SDA	Dati I2C (SDA)	D21
A0	Non collegato all’ESP32	—	Address bit. Most boards answer at 0x60 or 0x62
OUT	Non collegato all’ESP32	—	Output 0 V to VCC. To check it, wire it to an ADC1 pin

Collegamento consigliato per l’ESP32 DevKit a 30 pin, evitando i pin della flash, di sola lettura e di strapping. BoardPilot lo controlla mentre colleghi.

Codice di partenza (Arduino)

#include <Wire.h>

void setup() {
  Serial.begin(115200);
  Wire.begin(21, 22);  // SDA = GPIO 21, SCL = GPIO 22
  Wire.beginTransmission(0x60);
  bool found = Wire.endTransmission() == 0;
  Serial.println(found ? "MCP4725 12-bit DAC breakout found at 0x60" : "Not found: check power, GND and SDA/SCL");
}

void loop() {}

Fonti

Microchip MCP4725 datasheet, Address 1100 A2 A1 A0: A2 A1 set at the factory, A0 by pin (0x60 to 0x67); supply 2.7 to 5.5 V
Adafruit MCP4725 breakout guide, Pinouts. Board order differs between sellers: check the silkscreen

Provalo in 3D in BoardPilot

BoardPilot Dati del componente (JSON)

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Dati dei componenti: CC BY 4.0, riutilizzabili citando BoardPilot.