Hi,

we are using ESP-WROOM-32 in our project.i am not able find out the I2C Pin numbers.
Can anyone suggest me i2c pinnumbers.
Below attached our schematics.


Thanks,
Ashok

 

Have you looked through this?
And, according to....
https://randomnerdtutorials.com/esp32-esp8266-i2c-lcd-arduino-ide/
it may be...
GPIO21 = SDA.
GPIO22 = SCL.

 

Have you looked through this?
And, according to....
https://randomnerdtutorials.com/esp32-esp8266-i2c-lcd-arduino-ide/
it may be...
GPIO21 = SDA.
GPIO22 = SCL.

Hi,
Can u tell me the pin numbers.

Thanks,
Ashok

 

I think you will have to experiment.
The Adafruit one uses 22=SCL and 23=SDA.
https://learn.adafruit.com/adafruit-huzzah32-esp32-feather/pinouts
It looks like you may be able to select them.

static const uint8_t TX = 17;
static const uint8_t RX = 16;

static const uint8_t SDA = 23;
static const uint8_t SCL = 22;

static const uint8_t SS = 2;
static const uint8_t MOSI = 18;
static const uint8_t MISO = 19;
static const uint8_t SCK = 5;