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Voltative
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Добавлен 31 дек 2023
Electrical engineering where I never grew out of the sense of wonder.
Oscilloscope Watch Review
After backing the project on Kickstarter a little over 10 years ago, in October 2013, the "oscilloscope watch" by Gabotronics finally arrived in December 2023. Was the 10-year wait worth it? Jeff takes the watch for a spin to see.
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Видео
The secret feature in every LED: a solar cell
Просмотров 2 тыс.8 месяцев назад
Did you know that all LEDs have a secret feature? Not only can they convert electricity into light, they can also do the opposite: turn light into electricity, just like little solar cells! In this video, Jeff looks at the use of LEDs not only as power-generation devices, but also as photodiodes to detect transmitted light signals. It's a little bit of practical electrical engineering on the la...
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Pretty cool, shrinking the Xprotolab down to a watch! Now you just have to find a way to incorporate the test leads into the watchband.
It's pretty cool, for a low price point prototype. I wouldn't mind having one, but I wouldn't pay over $75 and I wouldn't wait 10 years. That said, I couldn't design and program one, might be able to assemble it. That's an impressive accomplishment.
Just add a couple of tabs to the back plug it in stick it on your girlfriend's wrist and you know if she's lying to you
I don't have a girlfriend, but I would like to know when I am lying to myself. Seriously though, props to them keeping on going, and delivering. Nobody has made anything on the project.
Forrest Mims demonstrated this in the early 80s, that's where I first found this out. Awesome video.
Great overview/demos, and cool idea re: Tx/Rx. Some notes: Allegedly they are more sensitive to shorter wavelengths than they're designed to emit. Also, watch out for *color*-phosphor-coated LEDs... (e.g. blue with red or green phosphor rather'n white). They do exist in the wild...
Right you are about the peak response wavelength being *shorter* than the peak emission wavelength! Video description has been updated.
Welcome to RUclips! Wondering if any custom PCBs may help for the upcoming content? Would love to sponsor if needed. (PCBWay zoey)