21
votes
How do I shut down IoT devices without a power button?
A well-designed endpoint device will manage loss of mains power. This can be achieved by using a robust filesystem design, or by maintaining sufficient power in battery/supercapacitor supplies to ...
- 10.5k
17
votes
Is there a way to turn on large numbers of IoT devices remotely?
In as much as there is a 'standard' solution I suspect it's going to look like a Wi-Fi enabled microcontroller attached to a relay or MOSFET. Something somewhere has to be on 24/7 if you want round-...
- 272
15
votes
How do I shut down IoT devices without a power button?
What is the preferred way to disconnect them from power? What if there is a power cut?
I assume you are talking about devices which act as gateways to aggregate and send it to the cloud (for e.g.: ...
- 1,550
13
votes
How do I shut down IoT devices without a power button?
You would very rarely want to remotely power off an embedded device. Instead, you put it into sleep mode, otherwise you can never remotely wake it again.
In sleep mode, normal functionality is ...
- 3,122
10
votes
How do I shut down IoT devices without a power button?
What is the preferred way to disconnect them from power? What if there is a power cut?
Most microcontrollers have a feature called "Brown out detection". This basically a supply voltage monitoring ...
- 7,843
8
votes
How do I shut down IoT devices without a power button?
Your smart devices (camera, sensors,...) manage very well power outage by design.
For your Rapsberry Pi, you can put an UPS or a powerbank and monitor (ping) your Internet gateway to check if there ...
- 3,776
7
votes
European Union Regulations for Smart Plugs
Most smart plugs I have come across are Wi-Fi controlled devices.
I expect the regulations would be similar to those imposed on a Wi-Fi router such as Technicolor's TG582n.
RTTE Directive ...
- 1,245
7
votes
Wiring regulations for self made electrical equipment (UK)
You only need to start involving qualified people for fairly major work. Minor alternations can be done yourself so long as they are done properly. What you are proposing doesn't sound like it would ...
- 171
6
votes
Accepted
Z-Wave switches with 2-way switched lights?
You've explicitly rejected the factory recommended way to configure the circuit, which is to have only one switch controlling the load, and using remote-only signalling switches for the others. And ...
- 2,552
6
votes
Control electric plug remotely
Some smart plugs can be controlled over the internet without having to be on the same network. D-Link Smart Plugs (http://us.dlink.com/products/connected-home/wi-fi-smart-plug/), for example, have a ...
- 221
5
votes
Control electric plug remotely
The Belkin WeMo sockets can also be controlled remotely from the app.
Basically any socket with support for Alexa/Google Assistant will have cloud component to control them (because the smart ...
- 12.7k
5
votes
Are there any 'minimal' power meter data loggers?
There is the Sonoff Pow WiFi Switch With Power Consumption Measurement or the SONOFF S31 - COMPACT DESIGN SMART PLUG WITH ENERGY MONITORING
that seems to be popular with the DIY community. You can ...
- 370
5
votes
Accepted
European Union Regulations for Smart Plugs
I would imagine the same restrictions would apply to Smart Plugs and any other electrical device equally; there does not seem to be any specific legislation that applies to IoT devices.
The UK ...
- 18.5k
4
votes
How do I shut down IoT devices without a power button?
What if there is a power cut?
Is my data at risk?
For most well designed commercial IoT devices you need not worry about sudden power loss. Let's take case on the Nest Thermostat.
The Nest ...
- 2,620
4
votes
Are there any 'minimal' power meter data loggers?
If you already have a digital meter inline (or can fit a cheap 2nd hand one), then you can optically monitor the 1000 impulse/kwH LED which is likely present (without needing to interface to the ...
- 10.5k
3
votes
Connecting Shelly i4 into existing circuit
This is not how the i4 works. The i4 input button(s) will trigger another relay to control an item. You cannot directly use the i4 as a classic switch. You should use a Shelly 1 or 1PM in this ...
- 31
3
votes
Accepted
Any devices that do what the Sonoff Mini R2 does, but is UL rated?
I recently dug into the Shelly switches and installed my first. Most are UL certified, the 1 in particular.
The most "heavy duty" of the Shelly switches only support up to a 16 amp load, so ...
- 201
3
votes
Accepted
What is the working voltage range of a Sonoff Touch?
Inside the Sonoff, there will be an AC to DC converter like Hi-link HLK-PM03 220V to 3.3V Step-Down Buck Isolated Power Supply Module which is used to power the Wi-Fi module separately. As I have ...
- 346
3
votes
Z-Wave switches with 2-way switched lights?
In-line dimmers have to be dimmers rather than switches because they have no neutral return at the switch. This makes any multi-way arrangement nigh impossible.
The 'obvious' homebrew solution is a z-...
- 10.5k
3
votes
Accepted
How can I stop my Philips Hue bulbs resetting to full brightness after a power cut?
@Helmar 's comment is quite good for a workaraound : You should monitor power outage.
Monitoring power outage is starting to become recurrent here and it is critical to see if there was an intrusion ...
- 3,776
3
votes
Wiring regulations for self made electrical equipment (UK)
The regulations in the UK cover fixed wiring only, as far as I know. Replacing existing fittings is generally OK, it's only new or specific locations which are regulated. So if it plugs in, it's OK. ...
- 10.5k
2
votes
How do I shut down IoT devices without a power button?
Different classes of IoT devices have different requirements as to functioning in light of power loss. Your weather station might not care if power goes down, but your security system might. Your ...
- 678
2
votes
Connecting Shelly i4 into existing circuit
You only have a live wire (brown) and a switch output (black) coming into this socket.
The appropriate way to wire this would be to pull new wires through so that you have live (brown), neutral (blue),...
- 121
2
votes
Linky - EDF - Backfeeding feature
Yes, the Linky power meters are able to count both power received from the grid ("puissance soutirée" in French) and power injected back to the grid ("puissance injectée").
This document from Enedis (...
- 2,398
2
votes
How to detect current flow in a live wire running at 220V AC, using Esp32
I would use a current transformer. A current transformer is typically a toroidal magnetic core through which one power wire is threaded, with a few hundreds turns wrapped around the core. A current ...
- 226
2
votes
Accepted
Monitor plug socket remote from desktop PC
If you have internet, it would be easiest to use a switch that can be controlled via IFTTT. Just google IFTTT light switch and you'll see the light !
If you dont have internet, you can still use a ...
- 1,208
1
vote
Hardware to wire ESP32 directly to 110VAC?
Take a look at the Tasmota project, which allows you to run custom code on cheap off-the-shelf ESP8266 and ESP32 mains devices.
You can probably buy some cheap hardware that does what you want, or ...
- 191
1
vote
How to replace a on-the-wire switch by a smart device?
One possibility would be a Shelly Button with a Shelly 1 inside.
It can use its own firmware or be flashed by something like ESPHome (both are supported in Home Assistant)
The setup is not cheap, ...
- 855
Only top scored, non community-wiki answers of a minimum length are eligible