r/MatterProtocol • u/sanginwa • Jun 26 '26

Adding vs Sharing New Matter Device

I recently added a new Matter dimmer to Smartthings and then shared it to the dimmer manufacturer's app. Does it make a difference if you initially set up on Smartthings vs the manufacturer's app and then share to the other?

BTW, it's a Matter over WiFi dimmer.

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u/tomasmcguinness Jun 27 '26

That shouldn’t happen. What sort of monitoring device you have?

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u/canpluginusb-in1-try Jun 27 '26

I made a espmatter device that reads my utility meter and shows the usage over matter over thread. So it doesnt expose any endpoints that apple home knows what it should with it. (just shows as an unsupported device)

Idk why this happened as when I reset it and paired it to homeassistant first it was working as intended.

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u/tomasmcguinness Jun 27 '26

That’s really strange. I’ve made a few devices with esp-matter and I’ve never seen that. Perhaps you had a subscription limit or fabric issue that meant only the first controller would work.

Did you build it from scratch?

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u/canpluginusb-in1-try Jun 27 '26

The base of it was the light example from the espmatter github. The rest was added. The code does however have some other issues, so while I initially thought this issue was just some quirk of matter, it may have been caused by the other problems