Clusterhat 2.6

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Andrew Jolly

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Mar 21, 2026, 4:33:40 PM (11 days ago) Mar 21
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Hi

With the new version, the XA0/XA1 - I/O Expander I2C address has been removed.
How do you control multiple clusterhats now without disconnecting the HAT EEPROM? 

ClusterHAT

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Mar 21, 2026, 4:58:36 PM (11 days ago) Mar 21
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Hi, 
With the new version, the XA0/XA1 - I/O Expander I2C address has been removed.
How do you control multiple clusterhats now without disconnecting the HAT EEPROM? 

With the minimal firmware it needs a recompile. I'll compile the firmware for the previously supported I2C addresses and add tidied instructions to compile/upload the firmware to the GitHub repo ( https://github.com/8086net/clusterhat26-firmware ) as soon as I can.

Chris.

Chris Burton

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Mar 25, 2026, 7:00:05 PM (7 days ago) Mar 25
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Documentation on changing the I2C address for the emulated I2C expander on the ClusterHAT v2.6 has been added at https://8086.support/content/23/128/en/how-do-i-update-the-firmware-on-clusterhat-v26.html

Chris.
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