Sonoff Basic and BME280 - stodev-com-br/Tasmota GitHub Wiki
"BME280 sensor, an environmental sensor with temperature, barometric pressure and humidity", see Datasheet.
based on the GPIO locations
Connect BME280 to Sonoff-Basic- BME280-3.3V -> Sonoff-3.3V
- BME280-GND -> Sonoff-GND
- BME280-SCL -> Sonoff-TX
- BME280-SDA -> Sonoff-RX
NOTE:
YOU NEED TO DISABLE SERIAL LOG COMPLETELY TO ALLOW SENSORS ON TX/RX PINS
On the Tasmota web interface go to Configuration->Configure Module
and set