use one switch to turn on two lights – in any combination
visitors this year: 301 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: 301 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: 16,308 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: 2,057 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: 696 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, Roger Frost expanded the coverage to home automation, gadgets and sensors to measure, or understand, what’s going on around him.
To find things the search box, the menu and the keywords work perfectly (and we’re totally free as in advert free).
Roger Frost has been writing about technology since 1988 and this web includes articles; radio interviews with scientists and tutorials to use technology at home and the classroom.
Please enjoy and share this content. To say hi – there’s a reply button on each page that goes straight to me in Cambridge, UK. Send a private message on this page.
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