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+--- Thread: IIC header (/showthread.php?tid=8462)
IIC header - CCampbell - 08-23-2025
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.
RE: IIC header - admin - 08-24-2025
![[Image: KC868-A16S-1_06.jpg]](https://www.kincony.com/images/KC868-A16S/KC868-A16S-1_06.jpg)
Point E is i2c bus extender.
RE: IIC header - CCampbell - 08-25-2025
(08-24-2025, 12:41 AM)admin Wrote:Thanks! What pins are the SLC and SDA connected to in the ESP32. I am having trouble registering my PCA9548A i2C mulitplexer.
Point E is i2c bus extender.
I found it. Was on pins 4 and 5. its working great now!
RE: IIC header - admin - 08-25-2025
ok