New Tech

I recently spotted a new invention. 

It is a wireless doorbell. 

OK, nothing clever so far in this modern age where remarkable things are the new normal. However, this new doorbell doesn't need batteries. It harvests the energy from your hand to power the transmitter for a moment to send the wireless code. That is cute.

Alas, the other end of the invention does need power. It is a receiver plugged in to a power socket, though you do get a choice of several ring tones.

It seems to me this invention is half baked and lacking. 

Let me propose a proper battery free doorbell that is also completely wireless. It harvests energy from your hand and converts it directly to sound. No batteries are needed. The volume is fully adjustable and the range of ring tones is limited only by the user's imagination. This example is undergoing a long term trial at Durham Cathedral.



Comments

Post a Comment

Popular posts from this blog

Wicker dam

Image
Well this is typical of Britain. We used to do things well. Sheffield steel was the envy of the world, people would queue round the block for the chance to buy a nice nylon shirt from Marks and Spencer or a brand new Vauxhall Velox. And now? Now we try to keep lake water in place with a pair of wicker fences.  It is this sort of woolly thinking that could lose us our Empire. You mark my words.
Read more

What's This?

Image
What's this little thing then eh?   Well, let me tell you a story... We changed cars recently. The replacement car is awfully modern and features a USB port.   A USB port.. really? What is that for, do you charge your phone on it? No, in fact you connect your iPod* to it. However it will also accept a standard memory stick and play mp3 music files from folders directly. Now that is a cute trick, as I don't own an iPod*. However, I wouldn't want a conventional memory stick poking out of the car for all to see, so I set off in search of the smallest stick I can find. Here it is, a Busbi Mini 4GB stick. In the background are just some of the CDs and tapes I transferred to it. Even this version looks like it will hold about 40 albums, which is all we will need in the car. So, this leads me to a nostalgic moment. In order to convert the tapes to mp3, I had to record them on the PC, cut 25 minutes of audio into individual tracks and export as WAV
Read more

Pompeii

Image
No trip to the Bay of Naples is complete without a visit to Pompeii. This vast 270 acre site is almost too much to take in, particularly in the scant two hours we had with our coach guide. Here's a view of the Auditorium near the end of the visit. A chance to sit down and relax for a moment.  As always, click on the image for the full size version.   The plaster casts of the victims are a chilling and sombre sight in amongst all the ruins For a more relaxed and informative experience, I suggest Herculaneum, on the other side of Vesuvius. Unlike Pompeii, this was covered in volcanic ash and mud which created a anaerobic layer that led to the  preservation of wood and similar materials. Here is a panorama of the buried town that shows how far below the current ground level it is. Most of Herculaneum is under the more recent town. It was lost for centuries: Historians agreed the it and Pompeii were on the coast, but they were digging in the wrong p
Read more