I have the HW-611 E/P 280 sensor which is labeled as a BMP280 and currently tried both Adafruit and SparkFun libraries for it with i2c connection (on addr 0x76 - detected by the scanner) but i still have the "No BMP280 sensor found, check wiring' . The wiring is 100% correct (VCC to 3.3, GND to GND, SDA to SDA to SDA, SCL to SCL - tried with A ports, same thing- ).