Shelly Wifi smart home devices now with AU/NZ Certification

Forums › Gadgets, robotics, home automation, electronics (including wearables) › Shelly Wifi smart home devices now with AU/NZ Certification

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276 posts

Ultimate Geek

#2784757 27-Sep-2021 10:36

Have now got a whole lot of of Dimmer 2s setup with PDL Momentary

All working great with a Raspberry Pi4 running homebridge.

However - every now and again a circuit will do a single flicker. I can't see a pattern, and its not the every live circuit.

Anyone else seen this with a similar setup?

Twitter : @twocolddogs

Psilan

856 posts

Ultimate Geek

#2784780 27-Sep-2021 10:56

Enable debug logging and see what the device logs show when it occurs. It usually reports everything in reasonably good detail.

Do some calibrations. Adjust MAX brightness down.

Does the Shelly click when you circuit flickers?

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alsta

276 posts

Ultimate Geek

#2784958 27-Sep-2021 15:19

No it doesn’t click

Not sure how to reduce max brightness, but the flicker happens at different dimming levels

Have calibrated a few times. Doesn’t seem to alter things

I’ll enable logging this evening and try and capture one as it happens.

Twitter : @twocolddogs

Psilan

856 posts

Ultimate Geek

#2785048 27-Sep-2021 16:24

If you don't get much out of the logs and it doesn't click, I would probably terminate everything again. Make sure it is flawless across the shelly and the switch, including any joiners.

I would often find my joiners were done really poorly, so cut them and twisted from scratch.

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tb9

27 posts

Geek

#2785332 27-Sep-2021 21:28

alsta:

Have now got a whole lot of of Dimmer 2s setup with PDL Momentary

All working great with a Raspberry Pi4 running homebridge.

However - every now and again a circuit will do a single flicker. I can't see a pattern, and its not the every live circuit.

Anyone else seen this with a similar setup?

Yes, I’ve seen that too, doesn’t happen very often but can be very distracting knowing its less than perfect and sort of waiting for the flicker to happen.

I did log a ticket with Shelly, but they weren’t very helpful and trying to shift blame onto the led lights, even though I was experiencing the same single flicker on dimmable downlights and dimmable bulbs. The support just fizzled out. They did want me to try to video the flicker! Easier side than done when so random and might be only once or twice a night.

I did buy 4 but have only installed 2 so far, reluctant to install the other 2 for this very reason.

The ones installed have done a firmware update (same time as dealing with support) Possibly slightly better or less frequent, or that could just be wishful thinking.

The Shelly app and configuration possibilities are awesome, just let down by this little flicker otherwise the Dimmer2 would be perfect.

Ge0rge

2055 posts

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#2785335 27-Sep-2021 21:35

tb9:

The Shelly app and configuration possibilities are awesome, just let down by this little flicker otherwise the Dimmer2 would be perfect.

I'd argue that the Shelly app is a PoS - every time I go to open it, it wants to "update files" - couldn't get rid of it fast enough. About the only time I use it now is to set up a new device onto WiFi, then I use MQTT and home assistant to drive them - that has made my user experience with Shelly considerably better.

mulac

155 posts

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#2785340 27-Sep-2021 21:46

You don’t even need the app for that, they have a web interface which is much sleeker

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alsta

276 posts

Ultimate Geek

#2785342 27-Sep-2021 21:47

HomeKit via homebridge makes the Shelly’s great. Agree the Shelly app isn’t great.

I’m not sure how to interpret the logs. I’ve captured some episodes, anyone know what to look for?

Twitter : @twocolddogs

tb9

27 posts

Geek

#2785347 27-Sep-2021 22:11

Not to dwell too much on the app, each to their own, once configured, Alexa is my main mode of control…

I too would be more interested if there are others also experiencing the flicker on the dimmer2.

chevrolux

4962 posts

Uber Geek
Inactive user

#2785354 27-Sep-2021 22:42

Make sure you're on up to date firmware. And yea, as others have said, the app is trash. Just use the browser and configure there.

I've got 20-odd Halcyon LED downlights on 6 circuits all with a Dimmer2 on them and get zero flicker. Before these downlights one circuit was a random downlight brand I'd never heard of and flickered every now and again. Since swapping to a quality light, happy days. Its almost certainly an issue with the LED driver quality.

I have my Shellys set to trailing edge, and re-calibrated after each firmware update (which I don't do very often at all to be fair).

alsta

276 posts

Ultimate Geek

#2785355 27-Sep-2021 22:47

Hmmm. I’ve got brand new halcyons as well…..

Twitter : @twocolddogs

alsta

276 posts

Ultimate Geek

#2785361 27-Sep-2021 23:52

Shelly support are recommending to try a bypass

Has anyone used one? Do they need an SDOC

Could I use this instead which has an SDOC ?

https://www.halcyonlights.co.nz/product/load-correction-device-%2F-dummy-load-%2F-bypass-8070.htmx

Shelly say I need to use their Bypass but I suspect it’s exactly the same?

Twitter : @twocolddogs

Ge0rge

2055 posts

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#2785369 28-Sep-2021 06:37

Have you tried removing the Shelly from that circuit for a couple of nights? The problem might not be with it at all.

alsta

276 posts

Ultimate Geek

#2785383 28-Sep-2021 07:37

Nah. It’s the Shelly. Had the lights in for a few weeks prior

Twitter : @twocolddogs

Psilan

856 posts

Ultimate Geek

#2785397 28-Sep-2021 08:03

alsta: HomeKit via homebridge makes the Shelly’s great. Agree the Shelly app isn’t great.

I’m not sure how to interpret the logs. I’ve captured some episodes, anyone know what to look for?

You should see status changes from 0 to 1 I think in the debug logs when changes occur that the shelly knows about or causes.

Did you remember to turn debug logging off (make sure you do)?

Did you re-terminate? This is the most likely cause if the lights worked fine on their own.

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