BME280 and TTGO Lora32

c1p81 · March 28, 2022, 8:46am

Good Morning
i cant find the pin configuration for BME280 on TTGO Lora32
If i connect sensor to standard pin 21 and 22 the oled screen goes black
Oled and BME280 are I2C devices so must works on the same pins

what’s the right pin configuration?
thanks
Luca

garth · March 28, 2022, 2:47pm

Those are the tbeam pins

github.com

meshtastic/Meshtastic-device/blob/master/variants/tlora_v1/variant.h

#undef GPS_RX_PIN
#undef GPS_TX_PIN
#define GPS_RX_PIN 36
#define GPS_TX_PIN 37

#define I2C_SDA 4 // I2C pins for this board
#define I2C_SCL 15

#define RESET_OLED 16 // If defined, this pin will be used to reset the display controller

// #define VEXT_ENABLE 21 // active low, powers the oled display and the lora antenna boost
#define LED_PIN 2     // If defined we will blink this LED
#define BUTTON_PIN 0  // If defined, this will be used for user button presses
#define BUTTON_NEED_PULLUP
#define EXT_NOTIFY_OUT 13 // Default pin to use for Ext Notify Module.

#define USE_RF95
#define LORA_DIO0 26 // a No connect on the SX1262 module
#define LORA_RESET 14
#define LORA_DIO1 35 // Not really used

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BME280 and TTGO Lora32

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