Review on 🌤️ CHENBO Barometric Pressure Precision Atmospheric Gauge by Mark Adlesh

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. To use the ADAFRUIT library you must either set the pin high or change the default value to 0x76 in the Adafruit_BMP280.h file. So now the ADAFRUIT code sample should work. Please note that the chip is not a real Bosch chip, but a copy of it. I tested 2 boards and both dropped about 2.5°C. The pressure sensor seems to work more stable.