Hello everyone,
im trying to connect my Adafruit Metro Esp 32 S2 via i2c with the Kx134 Sensor. Herfor I use the pre-defined ports from the board for I2c communication. Still I can’t receive anything from the sensor. Even if I switch the board its still faulty. Did anyone have the same problem or is the Sensor broken. Scannt even
Thank for your help
Share a photo of the wiring and the code being used
Also try running i2c detect and see if the device is showing up
My first guess is that board might use different default pin #'s for i2c
We tried determining the I2C address with another board (esp8266) with this script:
#include <Wire.h>
void setup() {
Serial.begin(115200);
delay(1000);
Serial.println();
Serial.println();
scanPortCombi(4, 5);
}
void scanPortCombi(int sda, int scl){
Serial.print("Scanning (SDA : SCL) - ");
Serial.print(sda);
Serial.print(" : ");
Serial.print(scl);
Serial.print(" - ");
Wire.begin(sda, scl);
check_if_exist_I2C();
}
void check_if_exist_I2C() {
byte error, address;
int nDevices;
nDevices = 0;
for (address = 1; address < 127; address++ ) {
// The i2c_scanner uses the return value of
// the Write.endTransmisstion to see if
// a device did acknowledge to the address.
Wire.beginTransmission(address);
error = Wire.endTransmission();
if (error == 0){
Serial.print(“I2C device found at address 0x”);
if (address < 16)
Serial.print(“0”);
Serial.print(address, HEX);
Serial.println(" !");
nDevices++;
} else if (error == 4) {
Serial.print(“Unknow error at address 0x”);
if (address < 16)
Serial.print(“0”);
Serial.println(address, HEX);
}
} //for loop
if (nDevices == 0)
Serial.println(“No I2C devices found”);
else
Serial.println(“**********************************\n”);
//delay(1000); // wait 1 seconds for next scan, did not find it necessary
}
void loop() {
}
Serial:
10:28:15.117 → Scanning (SDA : SCL) - 4 : 5 - Unknow error at address 0x01
10:28:15.149 → Unknow error at address 0x02
10:28:15.149 → Unknow error at address 0x03
10:28:15.149 → Unknow error at address 0x04
10:28:15.149 → Unknow error at address 0x05
10:28:15.149 → Unknow error at address 0x06
10:28:15.149 → Unknow error at address 0x07
10:28:15.149 → Unknow error at address 0x08
10:28:15.149 → Unknow error at address 0x09
10:28:15.149 → Unknow error at address 0x0A
10:28:15.149 → Unknow error at address 0x0B
10:28:15.149 → Unknow error at address 0x0C
10:28:15.149 → Unknow error at address 0x0D
10:28:15.181 → Unknow error at address 0x0E
10:28:15.181 → Unknow error at address 0x0F
10:28:15.181 → Unknow error at address 0x10
10:28:15.181 → Unknow error at address 0x11
10:28:15.181 → Unknow error at address 0x12
10:28:15.181 → Unknow error at address 0x13
10:28:15.181 → Unknow error at address 0x14
10:28:15.181 → Unknow error at address 0x15
10:28:15.181 → Unknow error at address 0x16
10:28:15.181 → Unknow error at address 0x17
10:28:15.181 → Unknow error at address 0x18
10:28:15.181 → Unknow error at address 0x19
10:28:15.212 → Unknow error at address 0x1A
10:28:15.212 → Unknow error at address 0x1B
10:28:15.212 → Unknow error at address 0x1C
10:28:15.212 → Unknow error at address 0x1D
10:28:15.212 → Unknow error at address 0x1E
10:28:15.212 → Unknow error at address 0x1F
10:28:15.212 → Unknow error at address 0x20
10:28:15.212 → Unknow error at address 0x21
10:28:15.212 → Unknow error at address 0x22
10:28:15.212 → Unknow error at address 0x23
10:28:15.212 → Unknow error at address 0x24
10:28:15.212 → Unknow error at address 0x25
10:28:15.248 → Unknow error at address 0x26
10:28:15.248 → Unknow error at address 0x27
10:28:15.248 → Unknow error at address 0x28
10:28:15.248 → Unknow error at address 0x29
10:28:15.248 → Unknow error at address 0x2A
10:28:15.248 → Unknow error at address 0x2B
10:28:15.248 → Unknow error at address 0x2C
10:28:15.248 → Unknow error at address 0x2D
10:28:15.248 → Unknow error at address 0x2E
10:28:15.248 → Unknow error at address 0x2F
10:28:15.248 → Unknow error at address 0x30
10:28:15.248 → Unknow error at address 0x31
10:28:15.248 → Unknow error at address 0x32
10:28:15.279 → Unknow error at address 0x33
10:28:15.279 → Unknow error at address 0x34
10:28:15.279 → Unknow error at address 0x35
10:28:15.279 → Unknow error at address 0x36
10:28:15.279 → Unknow error at address 0x37
10:28:15.279 → Unknow error at address 0x38
10:28:15.279 → Unknow error at address 0x39
10:28:15.279 → Unknow error at address 0x3A
10:28:15.279 → Unknow error at address 0x3B
10:28:15.279 → Unknow error at address 0x3C
10:28:15.279 → Unknow error at address 0x3D
10:28:15.279 → Unknow error at address 0x3E
10:28:15.311 → Unknow error at address 0x3F
10:28:15.311 → Unknow error at address 0x40
10:28:15.311 → Unknow error at address 0x41
10:28:15.311 → Unknow error at address 0x42
10:28:15.311 → Unknow error at address 0x43
10:28:15.311 → Unknow error at address 0x44
10:28:15.311 → Unknow error at address 0x45
10:28:15.311 → Unknow error at address 0x46
10:28:15.311 → Unknow error at address 0x47
10:28:15.311 → Unknow error at address 0x48
10:28:15.311 → Unknow error at address 0x49
10:28:15.311 → Unknow error at address 0x4A
10:28:15.311 → Unknow error at address 0x4B
10:28:15.343 → Unknow error at address 0x4C
10:28:15.343 → Unknow error at address 0x4D
10:28:15.343 → Unknow error at address 0x4E
10:28:15.343 → Unknow error at address 0x4F
10:28:15.343 → Unknow error at address 0x50
10:28:15.343 → Unknow error at address 0x51
10:28:15.343 → Unknow error at address 0x52
10:28:15.343 → Unknow error at address 0x53
10:28:15.343 → Unknow error at address 0x54
10:28:15.343 → Unknow error at address 0x55
10:28:15.343 → Unknow error at address 0x56
10:28:15.343 → Unknow error at address 0x57
10:28:15.374 → Unknow error at address 0x58
10:28:15.374 → Unknow error at address 0x59
10:28:15.374 → Unknow error at address 0x5A
10:28:15.374 → Unknow error at address 0x5B
10:28:15.374 → Unknow error at address 0x5C
10:28:15.374 → Unknow error at address 0x5D
10:28:15.374 → Unknow error at address 0x5E
10:28:15.374 → Unknow error at address 0x5F
10:28:15.374 → Unknow error at address 0x60
10:28:15.374 → Unknow error at address 0x61
10:28:15.374 → Unknow error at address 0x62
10:28:15.374 → Unknow error at address 0x63
10:28:15.374 → Unknow error at address 0x64
10:28:15.407 → Unknow error at address 0x65
10:28:15.407 → Unknow error at address 0x66
10:28:15.407 → Unknow error at address 0x67
10:28:15.407 → Unknow error at address 0x68
10:28:15.407 → Unknow error at address 0x69
10:28:15.407 → Unknow error at address 0x6A
10:28:15.407 → Unknow error at address 0x6B
10:28:15.407 → Unknow error at address 0x6C
10:28:15.407 → Unknow error at address 0x6D
10:28:15.407 → Unknow error at address 0x6E
10:28:15.407 → Unknow error at address 0x6F
10:28:15.407 → Unknow error at address 0x70
10:28:15.439 → Unknow error at address 0x71
10:28:15.439 → Unknow error at address 0x72
10:28:15.439 → Unknow error at address 0x73
10:28:15.439 → Unknow error at address 0x74
10:28:15.439 → Unknow error at address 0x75
10:28:15.439 → Unknow error at address 0x76
10:28:15.439 → Unknow error at address 0x77
10:28:15.439 → Unknow error at address 0x78
10:28:15.439 → Unknow error at address 0x79
10:28:15.439 → Unknow error at address 0x7A
10:28:15.439 → Unknow error at address 0x7B
10:28:15.439 → Unknow error at address 0x7C
10:28:15.485 → Unknow error at address 0x7D
10:28:15.485 → Unknow error at address 0x7E
10:28:15.485 → No I2C devices found
The ESP8266 Pinout is attached.
We also tried it with the Qwiic cable. Same results…
