Open Hardware: ESP32, RISC-V, and Arduino
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Hand Gesture Recognition on ESP32-S3 with the ESP-DL library - CNX Software
Ali Hassan Shah has deployed a deep learning model for hand gesture recognition on the ESP32-S3-EYE board using the ESP-DL library and achieved AI-powered hand recognition with a 0.7-second latency on the ESP32-S3 camera board.
Last year, Espressif released the ESP-DL library for the ESP32-S3 microcontroller with AI vector extensions, as well as ESP32 and ESP32-S2, along with a face detection demo that ran much faster on the ESP32-S3. Ali rolled out his own solution for AI gesture recognition and provided a step-by-step tutorial along the way.
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A Tiny RISC-V Emulator Runs Linux With No MMU. And Yes, It Runs DOOM! | Hackaday
It’s something of an article of faith, that to run Linux your computer must include a hardware memory management unit, or MMU. To an extent it’s true, in that for a Linux-based system to shine it must have that hardware, but in fact there has been support for MMU-less Linux for many years now. Prolific hacker [cnlohr] has created an emulated simple RISCV processor without an MMU, and not only does it run Linux, it also runs DOOM.
The videos below the break go into significant depth on writing and debugging an emulator not to mention the inner workings of DOOM, but fear not if it’s not your thing. Everything can be found in a GitHub repository, and there are straightforward instructions should you wish to try it yourself.
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Add a scale to your bike repair stand | Arduino Blog
If you do a lot of work on bicycles then a decent repair is very valuable. They can clamp onto various parts of the frame, like the top tube or seat tube, and support the bike while you work on it. Truing a wheel, for example, is much easier with a bike stand. And if your bike’s weight is an important factor, then Dane Kouttron’s Bike Repair Stand with Built-in Scale should be right up your alley.
The project’s title explains everything: this is a bike stand with an integrated digital scale. With a quick glance at the readout, a builder can see how much the bike weighs at any point during assembly (and deduce the weight of individual parts). It is meant to work with a wall-mounted bike repair stand. Kouttron built a base for the stand and the scale sits between the two, but it would be possible to adapt the design to keep it wall-mounted.