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IIC header

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IIC header
CCampbell Offline
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#1
08-23-2025, 04:01 PM
Hi, I would like to integrate a few Bosch BME688 environmental sensors and connect IIC.  Which header is the bus on?  I read that there are only two channels available, so I have a TCA9548A IIC 8-channel expansion board.
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#2
08-24-2025, 12:41 AM
[Image: KC868-A16S-1_06.jpg]
Point E is i2c bus extender.
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CCampbell Offline
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#3
08-25-2025, 07:38 PM (This post was last modified: 08-25-2025, 08:22 PM by CCampbell.)
(08-24-2025, 12:41 AM)admin Wrote: [Image: KC868-A16S-1_06.jpg]
Point E is i2c bus extender.
Thanks!  What pins are the SLC and SDA connected to in the ESP32.  I am having trouble registering my PCA9548A i2C mulitplexer.
I found it.  Was on pins 4 and 5.  its working great now!
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#4
08-25-2025, 10:04 PM
ok
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