Hi everyone, I’m reaching out for some guidance on integrating my Zemismart MTP1 device with Home Assistant OS. I’ve been exploring Matter over Thread, and while the device connects seamlessly with Google Home and Apple HomeKit, I’m encountering some challenges when trying to pair it with Home Assistant.
My setup includes a Matter Server and Thread Add-on on Home Assistant OS 16.3. The device successfully pairs with Google Home and Apple HomeKit, but when I attempt to pass it over to Home Assistant, I run into some connectivity issues. I’ve tried multiple methods, including using the Matter commissioning code and direct IP address pairing, but the logs indicate recurring errors related to secure session timeouts and failed retransmissions.
I’ve attached snippets from the logs below, which show that the commissioning process starts but eventually fails due to retransmission timeouts. This is quite perplexing since the device works perfectly with other ecosystems. I’m wondering if there’s a specific configuration or troubleshooting step I might have overlooked.
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2025-11-10 09:50:55.030 (MainThread) INFO [chip.storage] Initializing persistent storage from file: /data/chip.json
2025-11-10 09:50:55.030 (MainThread) INFO [chip.storage] Loading configuration from /data/chip.json…
2025-11-10 09:50:55.080 (MainThread) INFO [chip.CertificateAuthority] Loading certificate authorities from storage…
2025-11-10 09:50:55.080 (MainThread) INFO [chip.CertificateAuthority] New CertificateAuthority at index 1
2025-11-10 09:50:55.081 (MainThread) INFO [chip.FabricAdmin] Loading fabric admins from storage…
2025-11-10 09:50:55.081 (MainThread) INFO [chip.FabricAdmin] New FabricAdmin: FabricId: 0x0000000000000002, VendorId = 0x134B
I’ve also tried restarting the Matter Server and Thread Add-on, but the issue persists. I’m curious if others have encountered similar challenges with Matter devices and Home Assistant, and if there are any known workarounds or fixes. Any insights or suggestions would be greatly appreciated! 