Hi all,
Iām looking for a reliable smart plug with current/energy monitoring that meets these requirements:
- Ideally <1s time resolution (I need fast updates, not just averaged every few seconds.)
- WiāFi connectivity preferred, with MQTT client support out of the box (similar to how Shelly devices can publish to a local MQTT server when the load current changes. Iād rather not have to poll a deviceās HTTP endpoint a few times per second.)
- Provisioning/config: Bluetooth for setup would be a big bonus (I think the Shelly Plug S Gen3 can do this, too.)
- Reliability/manufacturer: Needs to be from a wellāsupported brand or at least something thatās proven stable and not a ācheap noānameā option.
Iāve been testing a few devices already. Most average power consumption over longer periods, while e.g. newer Shelly devices come frustratingly close to being exactly what I need.
Does anything on the market provide subāsecond resolution for current measurement? Most consumer plugs Iāve tried either average readings or only publish once every few seconds, which isnāt quite enough for my use case (measuring transient behavior and categorising operating modes of certain appliances).
Has anyone come across a plug that ticks these boxes? Or maybe a hidden configuration with Shelly devices that Iāve missed?
Thanks a lot for any help!
Edit: What Iām actually looking for is a fast response time to significant changes in power consumption (by more than a set amount or a percentage), so a high sample rate within the plug. A constant delay until the message is sent out wouldnāt be a problem at all.
@tofubl try something with support for esphome?
Thanks for the reply!
I have no experience with esphome. This list has many of the āusual suspectsā (Nous A1T which I have yet to test, Shelly Plug S) but how will this solve my problem?
I see that there are a few like this one that come with esphome preinstalled (a requirement for me, I canāt use smart plugs I individually have to reflash.) In the deviceās config file I see a variable
sensor_update_interval: 10s. Is that what you mean?@tofubl yeah, the idea would be to flash your own firmware configured precisely how you want it to work. update_interval: would be one of the knobs you could tweak. Just be aware that whatever you are feeding the readings to may end up storing a huge amount of data, if it is updating at more than 1Hz! The esphome sensor filters might also allow you to get rapid updates when itās changing significantly, and reduce the rate when you donāt need it.
Have ordered a few devices to test and will give it a go. Thanks!