visitors this year: 160 a tank level sensor that’s more useful than anything you can buy. This post shows my housing for a sensor that measures oil and water levels. The sensor is a...
visitors this year: 600 make a heating oil tank level sensor that’s more useful than anything you can buy can measure oil level in any unit – litres, kWh, gallons or days until I...
visitors this year: 166 Your smart bulbs, switches and door bell all come with a useful manufacturer’s app – over time you’ll accumulate many such apps. While Home Assistant might make them redundant, here...
visitors this year: 458 a 3-gang wall switch for your home automation – using eWelink, T4EU1C and Home Assistant I got to a point where I had plenty of ‘smart’ lights and gadgets but...
visitors this year: 1,039 I wouldn’t especially recommend the D-Link DCS-D150 motion sensor but it does have some features that had me buy it. Firstly it plugs into a wall socket above a worktop...
visitors this year: 4,263 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....
visitors this year: 661 The regular way to switch a Sonoff relay is to use the official ewelink app. Other ways require you to ‘flash’ the Sonoff device with Tasmota or ESPHome software and...
visitors this year: 2,887 The Home Assistant dashboard (aka ‘Lovelace’) is very good at displaying live sensor data as well as historic sensor data. The display below shows a ‘just now’ reading of the...
visitors this year: 283 In the beginning there was the smart bulb that changed colour and convinced me that here was something trivial and fanciful. Today I’m surprised by the usefulness of the smart...
visitors this year: 3,667 make 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...
rogerfrost.com is a compendium of ideas for using technology with sciencey questions in mind. Started in 1995 to offer ideas to school science teachers, Roger Frost expanded the coverage to home automation, gadgets and sensors to monitor, or understand, what’s going on around us.
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Roger Frost has been writing since 1988 and this web includes his published articles about the use of the Internet; the work of scientists and how technology is useful at home or school.
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