I got to a point where I had plenty of ‘smart’ lights and gadgets but few switches. But then I found a 3-gang version of the T4EU1C wall plate switch. It works over wifi...
We use inexpensive, ‘old’ technology, 433MHz devices as well as modern smart devices see also: 433MHz smarter letterbox how to set up RFlink so that it will read your RF sensors The easiest ready-to-roll...
In a previous project I set up temperature sensors in my room and fed the data via Bluetooth to Home Assistant, the home automation platform. This software records the measurements and plots them on...
The touch light switch on the wall lies in wait for someone to press it. When it’s on a press turns it off and when it’s off it turns on. That’s toggling a switch....
I’m not especially recommending the D-Link DCS-D150 motion sensor but it does have some features that had me buy it. Firstly it plugs straight into the wall above a worktop so it can sense...
‘Smart meters’ and metering devices usually measure the electricity used by the whole house*. However I prefer to pay attention to the electricity used by individual devices, such as a combination oven, fan heater...
In this project I control a Sonoff light switch using Home Assistant. You can do the same with other Sonoffs. The switch shown here is the T4EU1C wall plate switch. It works over wifi...
The regular way to switch a Sonoff relay is to use the official ewelink app – however Home Assistant doesn’t* work with ewelink. Other ways require you to ‘flash’ the Sonoff device with Tasmota...
The Home Assistant dashboard (aka ‘Lovelace’) is very good at displaying live sensor data and sensor data from the last several days. As you can see below you can display a ‘just now’ reading...
How to make inexpensive, ‘old’ technology, 433MHz devices work with today’s smart devices see also: 433MHz smarter letterbox RF sensors and receivers If you’ve used any of the following examples you probably own some...
smart sockets have uses. A smart socket adds a little cleverness to a table lamp or electric heater. The printer upstairs takes five minutes to warm up so switching it on by remote control...
How does one house an electronics project? Is there a neat way to house a smart doorbell and camera? I don’t relish the effort to design a 3D model. Maybe I was looking for...
see also more about 433MHz devices The letterbox is five doors and fifty metres from my desk. The uncertainty of the post lady arriving in the afternoon means that I make wasted journeys to...
smart bulbs and sockets have select uses. A smart socket adds a little on/off cleverness to a table lamp, electric heater or the printer upstairs that takes five minutes before it’s warm and useful....
When you look for home automation equipment you find many systems. They turn on lights and plug sockets; water the garden; unlock a door, turn up the heating; record a security camera, open the...
Even if you’ve no need for as much as a smart bulb, you do need to be impressed or surprised by the variety of smart gadgets on sale. There are smart door locks, garage...
… and see how to add features to the Home Assistant display An interest in solar energy is a possible reason to record the sun’s azimuth and the time of sunset. Home Assistant can track...
The Google nest thermostat or its Hive equivalent are items which I’d be happy to pay for rather than make. A first reason is that we rely too much on warmth, and a second...
If you want to make your own smart measuring device or presence detector or dog watching camera or tea bag lifting robot, the ESP32 and Arduino circuit boards make the gadget you need. A...
what you need to run your own home automation server Raspberry Pi – a kit with Raspberry Pi 3+ or later with the recommended power supply, 32Gb SD card, heatsinks and/or cooling fan. A...
When a ESP32 device has been flashed and powered, it will use the password you added to the code to connect to your wifi. The ESPhome interface in Home Assistant (pic below) will show...
Software which allows you to ‘own’ your devices ESPhome can be used to reprogram a ESP chip so that Home Assistant can control it. I use it to re-program a Sonoff S20 smart plug...
ESPhome is software that can program (or flash) an ESP chip. This chip is at the core of many automation projects. The software works inside Home Assistant running on a Raspberry Pi. The instructions...
The Sonoff POWR2 can be used as the timer on a hot water immersion heater. This model also measures electricity as volts, amps and current. I’ve flashed its wifi chip with different firmware so...
ready dec 2020
A Raspberry Pi is a small inexpensive low power computer that has numerous uses and hopefully there’s one that chimes for you. I don’t think you’d want to use a Pi for emails and...
There are a variety of camera types to help monitor the drive, a pet, a baby, a device, a bird feeder – whatever. You might want to know what’s eating the rabbit’s food or...
Here’s how to add a little functionality to Home Assistant, the automation platform. Do try this especially if you’re just starting to add features to Home Assistant. speedtestdotnet: scan_interval: hours: 4 Go to the...
There’s less value in having a camera pointed at the front door if I need to click too many things to see it. The home automation platform Home Assistant lets me fill a screen...
The LED striplights in a kitchen use 12v transformers and they are powered through smart plugs / sockets. The sockets are by TP-link – and they remember their on-off state if ever there’s a...
fit a sensor to the electricity meter for a minute by minute readout The UK electricity meter has a display showing electricity use in kWatt, and every few months someone pops by to read...
A heating oil tank level sensor that’s more useful than anything you can buy. Measures oil level in any unit – litres, gallons or days until I need to refill the tank Displays readings...
The Home Assistant sensor graph offers painless autoscaling with options to set detail and timespan. But how do I alter the data itself? A car fuel tank measures in gallons but it’s more useful...
rogerfrost.com is a compendium of ideas for using technology. It mostly shows how technology helps find answers to science questions. A home automation section for makers asks those questions around the house. Those who teach science will find every idea here indexed to save your time.
Roger Frost was a copywriter from 1988 to 2016 and this web includes many of his articles. They tell how the early Internet developed; how real scientists work and how real people, like you might use science & technology at home or school. Send a hi via the social links or add a comment to an article. Please use this content freely and link back here if you can.
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