use one switch to turn on two lights – in any combination
visitors this year: 464 The need: you use a table light for watching TV and a main (wall) light at other times and you want a coffee table button to switch between one or...
visitors this year: 464 The need: you use a table light for watching TV and a main (wall) light at other times and you want a coffee table button to switch between one or...
visitors this year: 33,938 a project to integrate inexpensive 433MHz RF devices with modern smart devices. We’ve brought all the instructions to get going with RFlink on one page. see also: 433MHz smarter letterbox...
visitors this year: 2,777 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...
visitors this year: 1,148 see also more about 433MHz devices The letterbox is five doors and fifty metres from my desk. The uncertainty of the postie arriving in the afternoon means that I make...
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, its coverage now extends to gadgets, home automation, home living and sensors to help understand what’s going on around the house.
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Roger Frost (his cv) has been writing about technology since 1988 and this web includes his articles; tutorials, lesson outlines and radio interviews.
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