How to check if connect to I2C device
sudo i2cdetect -y -a 1 or sudo i2cdetect -y -a 0// only for Raspberry Pi B
"77" is mean that I2C device is detected, and the address is "77"
sudo i2cdetect -y -a 1 or sudo i2cdetect -y -a 0// only for Raspberry Pi B
"77" is mean that I2C device is detected, and the address is "77"