Sound activated lamp that actually works quite well.
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- เผยแพร่เมื่อ 26 ก.ย. 2024
- Those of you who have been around as long as I have will shudder at the mere mention of "clap switches" where you had to physically clap your hands or shout to make things turn on and off. Really terrible things. But here we have a common style of Chinese LED lamp with an extra module that not only combines a light sensor, but also a sensitive audio circuit that detects a natural speaking level voice and turns the lamp on for about 45 seconds. So you could either use it to add a switchable lamp in an awkward location, or as a sound activated intruder deterrent.
As things like this go it's actually quite well implemented.
Bizarrely it even uses a very retro CD4011B CMOS logic chip to implement the sensing and timing.
When you find something that is well-made and not going to kill us, can you put a link to it in the notes? Thanks.
I got 2 similar sound activated LED lights, both have light sensors and are pretty good - especially for £1.19 each
Where do you get it?
Increase the time constant so it stays on for 2 minute intervals then it would be good, especially for the toilet. I'd like one for my room that stays on for an hour now that I think of it. Mod it with a switch on the side so you can set it for 5-15 and 45 minutes for your bedside lamp
so when you are visiting the little room, you have to keep singing....oh that was for when there was no lock, oh well things dont change much!. Well maybe if you add a wifi module, it can spy on everything you say....
An electret microphone acts as a variable capacitance not a variable resistance
Michel PASTOR The varying capacitance of the membrane drives an internal FET to give the effect of a resistor.
en.wikipedia.org/wiki/Electret_microphone
bigclivedotcom Right, I should have checked. I knew the principle and spoke too fast. Thank you for the information.
+Michel PASTOR I am sure you did.....
+JOSIP Žlk Duh ?
thats looks like quite a big microphone for such an application.
It's just a standard electret microphone. It was probably chosen because it is cheap, especially if purchased in large quantities :)
Lets call this a chinese spy lamp...its bugged ....haha
How can I get hold of a lamp like this? I'd be grateful for info. I'd need one that screws into the
light socket.
This capasiytor doble2 more light second???
Who is the supplier? Interesting lamp and I would like to get the same ones.
Where can I get some?
how can I cancel this sensor? its so god-damn sensitive!
ישראל נ
You can short out the microphone or add parallel or series resistor.