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Topic: I2C Wiring (Read 537 times) previous topic - next topic


I am creating some device that communicate via I2C, I can connect up to 8 device total but will only have 4 (uno is one of those)

I will be using PCF8574 at each device and the devices are about 30 cm away from uno

the question is do they have to be in a series Ie device 1 goes to device 2 then device 2 to device 3 then device 3 to device 4

or can i connect all 3 devices to the same pins directly at the uno


Both should work fine.


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