I2C Cable Length

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n7qnm
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Posts: 80

I2C Cable Length Jul 7, 2017 11:55:26 GMT -8

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Post by n7qnm on Jul 7, 2017 11:55:26 GMT -8

I have an SI1145 that I'd like to mount outside to collect solar radiation data to calculate Evapotranspiration; but, I rather not mount the Pi it's connected to outside.

How long can the I2C cable(s) be? I can probably get the Pi to within 1.5-2M of the sensor pretty easily and still have it under cover.

Thanks in advance!

Clay Jackson
N7QNM

SDL Global Moderator Posts: 5,655 Raspberry Pi: Yes Other Device: PC, arduino, beagleBone	I2C Cable Length Jul 7, 2017 12:20:21 GMT -8 Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by SDL on Jul 7, 2017 12:20:21 GMT -8 You should be OK. But it's not a simple answer. Here's a good answer for you: electronics.stackexchange.com/questions/106265/maximum-i2c-bus-length BP
	Last Edit: Jul 7, 2017 12:20:56 GMT -8 by SDL

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I2C Cable Length

Post by n7qnm on Jul 7, 2017 11:55:26 GMT -8

Post by SDL on Jul 7, 2017 12:20:21 GMT -8

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