I2c bus: Difference between revisions
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= Wiring = | |||
<pre> | |||
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) | |||
</pre> | |||
= How many devices on the bus? = | |||
https://www.bluedot.space/tutorials/how-many-devices-can-you-connect-on-i2c-bus/ | https://www.bluedot.space/tutorials/how-many-devices-can-you-connect-on-i2c-bus/ | ||
= Pull up resistor calculation = | = Pull up resistor calculation = | ||
Revision as of 09:14, 7 February 2020
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.