Open Hardware/Modding: ESP32 and Arduino
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WiCAN ESP32-C3 CAN Bus platform is available in USB-CAN and OBD-II form factors (Crowdfunding) - CNX Software
WiCAN is an ESP32-C3 CAN bus adapter that works over USB, Wi-Fi, and Bluetooth LE, and designed for car hacking and general CAN bus development.
The device is available in USB-CAN and OBD-II form factors and comes with firmware that works with RealDash to create nice-looking dashboards with the data.
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New display technology features magnetic pixels | Arduino Blog
Display technology, from cathode-ray tubes to LCD screens, exists to convey information to humans visually and it does that very well. But the lack of physical presence makes visual displays useless for almost everything else. The blind can’t feel pixels and computers need resource-intensive algorithms to make sense of the images we feed them. That’s why engineers from MIT CSAIL and the University of Calgary have developed a new type of display technology that relies on magnetic pixels called “mixels.”
In this context, “mixels” are individual elements that form a magnetic picture. A SnapMaker CNC machine modified with an Arduino Nano-controlled electromagnetic head can set each mixel to a magnetic north polarity, south polarity, or demagnetized state. A Hall effect sensor on the head lets the Arduino detect the polarity of each mixel so it can scan the image. Like a raster image made up of traditional visual pixels, these mixel images can be complex. A mixel image could, for instance, represent a QR code in order to store data. Each mixel is a single bit that is readable with a low-cost Hall effect sensor.
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An Arduino controls this strange two-wheel steering e-bike | Arduino Blog
James Bruton loves to experiment with unusual vehicle drive systems and configurations to find out how they perform under the dynamic conditions of real-world use. Internal combustion engines and driveshafts don’t tend to fit in those vehicles, so Bruton often utilizes electric motors. He usually turns to Arduino to control the motors and read the sensors in his contraptions. That remains true for his newest project: a strange two-wheel steering e-bike.
Imagine a bicycle, but with a rear wheel that also steers, and you’ve got a pretty good idea of the concept. But it would be really hard to steer both wheels at the same time, so Bruton came up with a unique control scheme. The front wheel has free steering, like a typical bicycle. The back wheel has active motor-driven steering. An encoder monitors the angle of the front steering so the back steering can rotate in response. There are three modes: one that locks the rear wheel to mimic a standard bike, one that matches the rear steering to the front, and one that mirrors the rear steering relative to the front.