BMM150 (GY-BMM150) 3-axis magnetometer con ESP32

Alimentazione 3.3 V Bus I2C Indirizzo I2C 0x10 / 0x11 / 0x12 / 0x13 Misura campo magnetico, direzione

Pin e collegamento all’ESP32

Pin	Ruolo	Pin ESP32	Note
VCC	Alimentazione	3V3	Use 3V3. Pin order differs between sellers: check the silkscreen
GND	Massa	GND
SCL	Clock I2C (SCL)	D22
SDA	Dati I2C (SDA)	D21
CSB	Non collegato all’ESP32	—	Address bit / SPI select. Sets the address with SDO (0x10 to 0x13)
SDO	Non collegato all’ESP32	—	Address bit. Sets the address with CSB (0x10 to 0x13)
INT	Interrupt	D35	Interrupt output, optional
DRDY	Interrupt	VP	Data ready, optional

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(0x10);
  bool found = Wire.endTransmission() == 0;
  Serial.println(found ? "BMM150 (GY-BMM150) 3-axis magnetometer found at 0x10" : "Not found: check power, GND and SDA/SCL");
}

void loop() {}

Fonti

Bosch BMM150 datasheet, Register 0x40 chip ID reads 0x32 only after the power control bit (0x4B bit 0) is set
Bosch BMM150 datasheet, I2C address 0x10 to 0x13 selected by CSB and SDO

Provalo in 3D in BoardPilot

BoardPilot Dati del componente (JSON)

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