ESP 32(WROOM) with multiple mpu6050 connection

Projects Programming
1

Dear all,
i tried to connect the 4 mpu6050 connections but no response (readings) in the output,i tried three mpu 6050 its worked actually after connecting fourth sensor, code is uploading but no output is comings

Please help me in the connection

// Custom I2C pins

#define SDA_2 33

#define SCL_2 32

#define SDA_3 27

#define SCL_3 26

#define SDA_4 18

#define SCL_4 19

these are my connection ,baud rate i used is 115200

// Custom I2C pins

#define SDA_2 33

#define SCL_2 32

#define SDA_3 27

#define SCL_3 26 for three sample readings coming after connecting that fourth senors i am facing issue .

2

check esp32-pinout-reference-gpios
when you connected the fourth MPU6050 did the first three still work or did all fail?
could be a power supply problem

you only list three scl/sda pins connections - what was the fourth?

3

nothing working

#include <Wire.h>
#include <Adafruit_MPU6050.h>
#include <Adafruit_Sensor.h>

// Custom I2C pins
#define SDA_2 33
#define SCL_2 32
#define SDA_3 27
#define SCL_3 26
#define SDA_4 18
#define SCL_4 19

// Create I2C instances for custom buses
TwoWire I2C_2 = TwoWire(1); // for MPU6050 #2
TwoWire I2C_3 = TwoWire(2); // for MPU6050 #3
TwoWire I2C_4 = TwoWire(3); // for MPU6050 #4

// Create MPU6050 sensor objects
Adafruit_MPU6050 mpu1;
Adafruit_MPU6050 mpu2;
Adafruit_MPU6050 mpu3;
Adafruit_MPU6050 mpu4;

void setup() {
Serial.begin(115200);
delay(1000);

// Start I2C buses
Wire.begin(); // Sensor #1: SDA=21, SCL=22
I2C_2.begin(SDA_2, SCL_2); // Sensor #2
I2C_3.begin(SDA_3, SCL_3); // Sensor #3
I2C_4.begin(SDA_4, SCL_4); // Sensor #4

// Initialize sensors
if (!mpu1.begin(0x68, &Wire)) {
Serial.println("Failed to find MPU6050 #1. Check wiring!");
while (1);
}
if (!mpu2.begin(0x68, &I2C_2)) {
Serial.println("Failed to find MPU6050 #2. Check wiring!");
while (1);
}
if (!mpu3.begin(0x68, &I2C_3)) {
Serial.println("Failed to find MPU6050 #3. Check wiring!");
while (1);
}
if (!mpu4.begin(0x68, &I2C_4)) {
Serial.println("Failed to find MPU6050 #4. Check wiring!");
while (1);
}

Serial.println("All four MPU6050 sensors initialized.");
Serial.println("Accel_X1,Accel_Y1,Accel_Z1,Accel_X2,Accel_Y2,Accel_Z2,Accel_X3,Accel_Y3,Accel_Z3,Accel_X4,Accel_Y4,Accel_Z4");
}

void loop() {
sensors_event_t a1, g1, t1;
sensors_event_t a2, g2, t2;
sensors_event_t a3, g3, t3;
sensors_event_t a4, g4, t4;

mpu1.getEvent(&a1, &g1, &t1);
mpu2.getEvent(&a2, &g2, &t2);
mpu3.getEvent(&a3, &g3, &t3);
mpu4.getEvent(&a4, &g4, &t4);

// Send all sensor data as comma-separated values (CSV)
Serial.print(a1.acceleration.x); Serial.print(",");
Serial.print(a1.acceleration.y); Serial.print(",");
Serial.print(a1.acceleration.z); Serial.print(",");
Serial.print(a2.acceleration.x); Serial.print(",");
Serial.print(a2.acceleration.y); Serial.print(",");
Serial.print(a2.acceleration.z); Serial.print(",");
Serial.print(a3.acceleration.x); Serial.print(",");
Serial.print(a3.acceleration.y); Serial.print(",");
Serial.print(a3.acceleration.z); Serial.print(",");
Serial.print(a4.acceleration.x); Serial.print(",");
Serial.print(a4.acceleration.y); Serial.print(",");
Serial.println(a4.acceleration.z);

delay(1000); // 1-second delay
}

13:54:13.280 -> ets Jul 29 2019 12:21:46

13:54:13.280 ->

13:54:13.280 -> rst:0x1 (POWERON_RESET),boot:0x13 (SPI_FAST_FLASH_BOOT)

13:54:13.299 -> configsip: 0, SPIWP:0xee

13:54:13.299 -> clk_drv:0x00,q_drv:0x00,d_drv:0x00,cs0_drv:0x00,hd_drv:0x00,wp_drv:0x00

13:54:13.299 -> mode:DIO, clock div:1

13:54:13.299 -> load:0x3fff0030,len:4888

13:54:13.299 -> load:0x40078000,len:16516

13:54:13.299 -> load:0x40080400,len:4

13:54:13.299 -> load:0x40080404,len:3476

13:54:13.299 -> entry 0x400805b4

4

Please follow the advice given in the link below when posting code, in particular the section entitled 'Posting code and common code problems'

Use code tags (the < CODE/ > icon above the compose window) to make it easier to read and copy for examination

https://forum.arduino.cc/t/how-to-get-the-best-out-of-this-forum

Please post your full sketch, using code tags when you do

Posting your code using code tags prevents parts of it being interpreted as HTML coding and makes it easier to copy for examination

In my experience the easiest way to tidy up the code and add the code tags is as follows

Start by tidying up your code by using Tools/Auto Format in the IDE to make it easier to read. Then use Edit/Copy for Forum and paste what was copied in a new reply. Code tags will have been added to the code to make it easy to read in the forum thus making it easier to provide help.

It is also helpful to post error messages in code tags as it makes it easier to scroll through them and copy them for examination

5

first one is
Vcc ---> Vcc, Gnd ----> Gnd, SCL---->22, SDA---> 21