🌤️ CHENBO Barometric Pressure Precision Atmospheric Gauge Review

Most likely a counterfeit or defective product. They do not apply to BMP280 because the I2C address is incompatible. The first was unsuccessful. The second person tested gave inaccurate temperature and pressure readings. The third showed the same. I don't think you should expect accuracy from them. They're pretty much rubbish

I bought it back in January 2020 and am only playing with it now. 5/5 on the I2C bus at address 0x76 and sees the address change to 0x77 when +3.3V is applied. None of the available BME or BPE libraries could communicate with them. I tried 2 with soldered connectors, 3 with sensors. Can't tell if it really is returning an invalid chip id or if it's just not interacting. The chip ID is returned as 0xFF and gives 2 stars because it took me so long to test it.

First, make sure you connect the board and any pull-ups to 3.3V only. If your CPU board has pull-up resistors on pin 5V, this will most likely not work. If you don't have pull-ups, this won't work. Used on my NANO: Use a 10K 3.3V resistor on SCL and SDA for I2C bus. Use another 10kΩ to 3.3V for the CSB pin to put the chip in I2C mode. You have 2 options for the I2C address. The SDO pin is open or GND, the I2C address is 0x76, and if you raise it to 3.3V with a 10K resistor, the address is 0x77.