I2c bus

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Wiring

Color  i2cbus 	Raspberry Pi
yellow SCL     	GPIO 3 / SCL (Pin 5)
orange SDA 	GPIO 2 / SDA (Pin 3)
Red    VCC / V 	3,3V (pin 1)
Black  GND     	GND (Pin 6)

How many devices on the bus?

https://www.bluedot.space/tutorials/how-many-devices-can-you-connect-on-i2c-bus/

Pull up resistor calculation

Stackoverflow

Ti.com

Therefore,we can selectany available resistor value between 966.667Ωand 1.77kΩ. The valueof the pull up resistor can be selected basedon the trade-off for the power consumption and speed. load PDF