Inside a kinetic self-powering remote switch
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- Опубліковано 27 бер 2021
- This self powering remote control switch was completely different to what I was expecting.
It's a very interesting circuit, especially the way it uses just two connections per rocker switch to generate the power and also tell which way it was toggled.
Given that sharp impacts can cause loss of magnetism over time, I wonder how long the switch will last.
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I have a kinetically self-powered door. It opens with a light kick. : )
There is no stored charge - everything is done with the energy from the push. These clickers will typically flash a white LED quite brightly. The RF encoding is optimised for the short packet length, typically AM, so unlikely to work with battery units
It's amazing that they can harvest enough energy from what seems to be a very low effort push.
These seem pretty great! Being able to add lightswitches by just sticking another one where you want it and doing no wiring at all is very clever.
Interesting, I was hoping you would hook up a scope so we could see just how much voltage was developed, and how long that 2.5V supply stayed up.
Fascinating little devices. Well explained too!
I have some door chimes that work on a similar principle. I've had one of the pushbutton units outside mounted to my gatepost for over two years, fully exposed to the weather and it is still working perfectly well.
They've probably recognized your name immediately and sent you more stuff to watch a longer video! ;D
Amazing little device, love it! In essence the human is the battery. The Matrix was right all along!
I'd love to see an oscilloscope trace of the power induced into the coil.
'super disco mode' 😂😁Phillips makes those for their HUE range of lamps. They use zwave to communicate and work great. Imagine the number of button cells the world can save on a yearly basis!
Ooooo... really like the snappy action of those switches and a possible 6 codes being sent to a micro controller without the need for a battery in the transmitter, that sounds super useful, thanks Clive :)
For those interested in the microjoule generator and the sort of micro-controller that can use it, there is a similar system described in the reference design by Texas Instruments, the TIDA 00690, with a lot of useful waveforms and data. The switch concept is similar to the AFIG0007 bare mechanism sold by Cherry, which gives a a 5msec pulse into 100 ohms load of around ~4V mean and 8v peak, total energy 300micro- joules.
I've always wondered how these worked, and like you I had presumed the clicking action and the power came from a piezo-electric mechanism, so I've really enjoyed your deep dive into this switch, thanks for taking the time to reverse engineer it for all your viewers.
I have fitted a few of those Curv kinetic switches over the years, and had zero failures. They're great for 2 way or intermediate lighting without bashing walls out or running cable. I always wondered how they worked, cheers Clive...great explanation.
Clive, stick a scope on to see: A - the psu voltage up time and B - the transmission data. Would be interesting!
Big Clive: "That was good. I really enjoyed that."
I had no idea these things were even a thing.
I didn't know that this existed, it's awesome.
Understanding a maximum of 1% of what you are saying but these videos are fascinating.