FEDEVEL
Platform forum

Sid , 06-17-2025, 02:28 PM

Hi everyone,
I'm currently working with the AS7262 and AS7263 spectral sensors on a custom board using the STM32H503RBTx. I also have two additional sensors connected on the same I2C bus.

However, when I try to scan the I2C bus, I'm unable to detect the AS7262 and AS7263. The schematic is attached for reference.

I'd really appreciate it if anyone has suggestions or troubleshooting tips. Thanks in advance!

QDrives , 06-17-2025, 10:23 PM

First fix your schematic so you do not have any text overlapping other texts or lines.
CN3 and CN4 have SDA and SCL swapped.
You have 5 devices attached to SDA1 and SCL1?

Robert Feranec , 06-18-2025, 10:32 AM

are not the two chips on the same address?