131–140 of 191 posts
If somebody wants to play around with Zynq 7010's - have a look at the EBAZ4205 board. They can be bought from Aliexpress (20-30€). These are former Bitcoin Mining controllers. Some people reverse engineered the entire thing. It can be found in GitHub. And there's an adapter plate available for getting to the GPIOs. For a less complex entry there are also Chinese FPGAs ("Sipeed" boards which use a GoWin FPGA. They ar…
Xilinx tool chain is also no-cost.
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I love these kind of inadvertent measurements. One of my favorite examples is that a sufficiently accurate IMU can get you relatively accurate longitude measurements from the Coriolis effect.
Asahi Linux (and likely MacOS too) uses the resistance of the speakers coils to detect overheating of same speakers and reduces volume.
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You don't have to try hard. Just use it as a photodiode and it magically works. However, if it's inside a plastic case that blocks light, it doesn't. Due to some law about entropy, efficient processes are necessarily reversible. That's why electric motors - some of the most efficient machines ever invented - are also generators.
> However, if it's inside a plastic case that blocks light, it doesn't. You want an ordinary diode to allow current to flow easily when it senses light? Simple: shine a powerful laser at the plastic-encased diode and it will melt the plastic and liquify the metal, fusing it together and allowing current to flow again. See? You just needed to try harder.
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"All diodes are light-emitting at least once"
Hahaha yea I've seen that in electronics lab a few times. The "temporarily light emitting diode"
I would love to see this come to our various mobile devices in a nicely packaged form. I think part of what is holding back assistants, universal-translators, etc, is poor audio. Both reducing noise and being able to detect direction has a huge potential to help (I want to live-translate a group conversation around a dining table, for example). Firstly it would be great if my phone + headphones could combine the micr…
https://en.wikipedia.org/wiki/Cocktail_party_effect?wprov=sf...
Look up acoustic cameras on YouTube, there are some pretty impressive demonstrations of their capability. This is one of the companies I've been watching for a while, but it looks like FLIR and some other big names are getting into it: https://www.youtube.com/@gfaitechgmbh The one use case that is both creepy and interesting to me is recording a public space and then after the fact 'zooming in' to conversations betwe…