Oh right @Njord insisted I tell you, fedi, about this button.
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Oh right @Njord insisted I tell you, fedi, about this button. It's a big orange button (AC remote for scale) that toggles an extension cord's power on/off when pushed
So far so boring right? Well it had been acting up a bit so we opened it up to change the battery and... no battery?
It apparently uses the mechanical force of pushing the button (it requires a bit of a push!) to trigger a piezoelectric charge which is apparently enough to send a wireless signal to the receiver
Neat!
I remember the old television remote controls had several ultrasonic whistles that pushing a button would be picked up in the television's vacuum tube amplifier and activate solenoids to mechanically change channels or rotate the volume knob...
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@MichaelPorter the igniter puts out a lot of RF noise, dunnit?
Back in the good old days you could blast out enough RF to basically picoweld iron filings at a distance, and nobody would stop you. https://en.wikipedia.org/wiki/Coherer
@rotopenguin I've *never* heard of these! Thanks
Interesting to see the wide variety of coherers. -
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@LunaDragofelis @eniko @Njord yes, but not the kind of power you need for prosthetics, more like picoampere. There's a lot of extremely fundamental research that would still be needed for the kind of application you're thinking of ^^'
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Oh right @Njord insisted I tell you, fedi, about this button. It's a big orange button (AC remote for scale) that toggles an extension cord's power on/off when pushed
So far so boring right? Well it had been acting up a bit so we opened it up to change the battery and... no battery?
It apparently uses the mechanical force of pushing the button (it requires a bit of a push!) to trigger a piezoelectric charge which is apparently enough to send a wireless signal to the receiver
Neat!
-
Oh right @Njord insisted I tell you, fedi, about this button. It's a big orange button (AC remote for scale) that toggles an extension cord's power on/off when pushed
So far so boring right? Well it had been acting up a bit so we opened it up to change the battery and... no battery?
It apparently uses the mechanical force of pushing the button (it requires a bit of a push!) to trigger a piezoelectric charge which is apparently enough to send a wireless signal to the receiver
Neat!
-
Oh right @Njord insisted I tell you, fedi, about this button. It's a big orange button (AC remote for scale) that toggles an extension cord's power on/off when pushed
So far so boring right? Well it had been acting up a bit so we opened it up to change the battery and... no battery?
It apparently uses the mechanical force of pushing the button (it requires a bit of a push!) to trigger a piezoelectric charge which is apparently enough to send a wireless signal to the receiver
Neat!
-
Oh right @Njord insisted I tell you, fedi, about this button. It's a big orange button (AC remote for scale) that toggles an extension cord's power on/off when pushed
So far so boring right? Well it had been acting up a bit so we opened it up to change the battery and... no battery?
It apparently uses the mechanical force of pushing the button (it requires a bit of a push!) to trigger a piezoelectric charge which is apparently enough to send a wireless signal to the receiver
Neat!
-
Oh right @Njord insisted I tell you, fedi, about this button. It's a big orange button (AC remote for scale) that toggles an extension cord's power on/off when pushed
So far so boring right? Well it had been acting up a bit so we opened it up to change the battery and... no battery?
It apparently uses the mechanical force of pushing the button (it requires a bit of a push!) to trigger a piezoelectric charge which is apparently enough to send a wireless signal to the receiver
Neat!
-
Oh right @Njord insisted I tell you, fedi, about this button. It's a big orange button (AC remote for scale) that toggles an extension cord's power on/off when pushed
So far so boring right? Well it had been acting up a bit so we opened it up to change the battery and... no battery?
It apparently uses the mechanical force of pushing the button (it requires a bit of a push!) to trigger a piezoelectric charge which is apparently enough to send a wireless signal to the receiver
Neat!
I got light switches like that in my house for nearly ten years. Sometimes you have to push them several times if you haven't used them in a while, probably to get enough piezo charge for a signal.
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Oh right @Njord insisted I tell you, fedi, about this button. It's a big orange button (AC remote for scale) that toggles an extension cord's power on/off when pushed
So far so boring right? Well it had been acting up a bit so we opened it up to change the battery and... no battery?
It apparently uses the mechanical force of pushing the button (it requires a bit of a push!) to trigger a piezoelectric charge which is apparently enough to send a wireless signal to the receiver
Neat!
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@sinbad @eniko @Njord
I got fed up with batteries in door bell button and the "bell" and unreliability (433 MHz).
Eventually I found a real wired pushbutton and BingBong inside box, though that used batteries. So I added a transformer to 8V AC at the fuse box, because the bing-bong real solenoid doesn't care about AC or DC. The bulb in the door bell button is across the switch, so in series & glows orange, thus long life.1950s technology, but 100% reliable.
No spying to Amazon.
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Oh right @Njord insisted I tell you, fedi, about this button. It's a big orange button (AC remote for scale) that toggles an extension cord's power on/off when pushed
So far so boring right? Well it had been acting up a bit so we opened it up to change the battery and... no battery?
It apparently uses the mechanical force of pushing the button (it requires a bit of a push!) to trigger a piezoelectric charge which is apparently enough to send a wireless signal to the receiver
Neat!
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@leonardof I'm not sure but @Njord might be able to tell you
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@leonardof I'm not sure but @Njord might be able to tell you
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@sinbad @eniko @Njord
I got fed up with batteries in door bell button and the "bell" and unreliability (433 MHz).
Eventually I found a real wired pushbutton and BingBong inside box, though that used batteries. So I added a transformer to 8V AC at the fuse box, because the bing-bong real solenoid doesn't care about AC or DC. The bulb in the door bell button is across the switch, so in series & glows orange, thus long life.1950s technology, but 100% reliable.
No spying to Amazon.
@raymaccarthy @sinbad @eniko @Njord
We had kinda the opposite in our last house. The button-push was wired to a battery-powered bell box, but the builders had put the bell and the battery directly above a radiator, which meant that we had to change the batteries every six weeks or so, because batteries don't like heat. We eventually gave up on it and installed something mains-powered.
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Oh right @Njord insisted I tell you, fedi, about this button. It's a big orange button (AC remote for scale) that toggles an extension cord's power on/off when pushed
So far so boring right? Well it had been acting up a bit so we opened it up to change the battery and... no battery?
It apparently uses the mechanical force of pushing the button (it requires a bit of a push!) to trigger a piezoelectric charge which is apparently enough to send a wireless signal to the receiver
Neat!
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@raymaccarthy @sinbad @eniko @Njord
We had kinda the opposite in our last house. The button-push was wired to a battery-powered bell box, but the builders had put the bell and the battery directly above a radiator, which meant that we had to change the batteries every six weeks or so, because batteries don't like heat. We eventually gave up on it and installed something mains-powered.
-
Oh right @Njord insisted I tell you, fedi, about this button. It's a big orange button (AC remote for scale) that toggles an extension cord's power on/off when pushed
So far so boring right? Well it had been acting up a bit so we opened it up to change the battery and... no battery?
It apparently uses the mechanical force of pushing the button (it requires a bit of a push!) to trigger a piezoelectric charge which is apparently enough to send a wireless signal to the receiver
Neat!
-
Oh right @Njord insisted I tell you, fedi, about this button. It's a big orange button (AC remote for scale) that toggles an extension cord's power on/off when pushed
So far so boring right? Well it had been acting up a bit so we opened it up to change the battery and... no battery?
It apparently uses the mechanical force of pushing the button (it requires a bit of a push!) to trigger a piezoelectric charge which is apparently enough to send a wireless signal to the receiver
Neat!
German CASO has several models of battery free kitchen scales (as an idea, maybe other brands are available locally):
https://caso-design.de/de/p/caso-kitchen-energy-design-kuechenwaage-mit-kitchen-energy-technologie/
(via the menu you can change region to UK - while selecting Benelux doesn't seem to work)
