Changing I2C port falis on version 2.5

[Thomas Wierzbicki]

Hi All,

I soldered XA1 and XA0 as described in the how-to, so I should get I2C address 23. I also changed the corresponding address in clusterctrl to 23.

Red control LED doesn't come up, i2cdetect -a -y 1 doesn't find any device.

Input is welcomed

Thomas

[Chris Burton]

I soldered XA1 and XA0 as described in the how-to, so I should get I2C address 23. I also changed the corresponding address in clusterctrl to 23.

Red control LED doesn't come up, i2cdetect -a -y 1 doesn't find any device.

I'd advise checking you haven't got a short on either of the XA0/XA1 solder jumpers as this would short out the 3.3V regulator on the USB hub which powers the I/O Expander which could then prevent the RED power LED from turning on.

Chris. 

[Thomas Wierzbicki]

Thanks a lot Chris,

please advice, the soldering point looks like an HI. Where should I solder, do i need tu cut the H?

Thomas

[Chris Burton]

Hi, 

please advice, the soldering point looks like an HI. Where should I solder, do i need tu cut the H?

Yes, the trace on the PCB needs to be cut before bridged to the other pad with solder - I've updated the FAQ article with an image showing which are the high/low pads and the trace you need to cut

8086 Support - How do I use the solder jumpers on the Cluster HAT?

Chris. 

[Thomas Wierzbicki]

Thanks a lot......:)

Problem solved.

Thomas