Open Hardware: Retro, Reverse Engineering, and ESP32
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Old VCR ☛ Thou shalt follow these Vintage Computing Commandments
Since vintage computing is supposed to be a spiritual experience, I point out that today, February 3, 2024, the Torah reading for this week is the Ten Commandments. Regardless of your religious tradition or lack thereof, I think we can all agree on these.
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Ken Shirriff ☛ Reverse engineering standard cell logic in the Intel 386 processor
In this article, I take a close look at the "standard cells" used in the 386, the logic blocks that were arranged and wired by software. Reverse-engineering these circuits shows how standard cells implement logic gates, latches, and other components with CMOS transistors. Modern integrated circuits still use standard cells, much smaller now, of course, but built from the same principles.
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CNX Software ☛ The Boondock Echo is an internet-connected ham radio powered by the ESP32-A1S devkit (Crowdfunding)
The Boondock Echo is an open-source, internet-backed recording and playback device for two-way devices. It can denoise, transcribe, translate, and send emails on hearing keywords/call signs. It is a low-cost solution for timeshift radio communication that enables users to monitor frequencies and record audio from a connected radio.
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Hackaday ☛ Resistor Color Code Clock Is A Bit Of Fun
Younger electronic engineers may see resistors with old-style color codes to display their values a little less than those from previous years, but if there’s a shibboleth among those who wield a soldering iron it’s probably something similar to instinctively saying “1K” when asked “Brown-black-red?”. Colors as numbers can be used outside resistors, for example in a clock, as [Det Builds Stuff] shows us with an ESP32 TFT dev board.