The iconic Etch-a-Sketch, a toy beloved by generations, always had one major limitation: a drawing mistake meant shaking the entire device and starting over from scratch. With the TekkaSketch project, this limitation is overcome thanks to a modern approach that integrates digital functions while preserving the classic aesthetic. The idea stems from observing the original…
It automatically supplies meals to your pet at preset times, by providing the daily dose of cat kibble. Having a pet involves big responsibilities, first of all granting them food; unfortunately, a hectic lifestyle and imposed workhours do not go hand-in-hand with the needs of our four-legged friends, and surely anyone living on their…
Many dog breeds require a lot of exercise and mental stimulation to be healthy and happy, but not many of us want to spend our time endlessly throwing a tennis ball. That’s why Connor Benson used an Arduino Nano to build an automatic ball launcher that is capable of keeping his pup entertained all day…
Docker is a tool for using Linux containers, which are an interesting topic in and of themselves. In a nutshell, you can think about them as either very light weight virtual machines that can run side-by-side on a host machine at near-native speed. In actuality, Docker containers are not virtual machines at all, but processes…
A new powerful Raspberry Pi alternative has been launched by Khadas in the form of the VIM3 which is available as both a Basic and Pro version priced at $99 and $139 respectively. The VIM3 uses an Amlogic S992X system-on-a-chip (SoC), the same SoC at the core of the Odroid-N2, which features four Cortex-A73 performance cores and two…
Augmented Arthropod by Grzegorz Lochnicki and Nicolas Kubail Kalousdian is an innovative self-balancing robot that is actually piloted by the movements of an insect placed inside a plastic case using two HC-SR04 ultrasonic sensors. The structure for the build consists of three platforms separated on threaded rod and a couple of rather standard DC gear…
A new open source Espressif ESP32-based board offering a form factor similar to popular single board computers such as the Raspberry Pi Model A / 3 Model A+ has been launched via the Crowd Supply website this month and takes the form of the Obsidian ESP32. Obsidian ESP32 is an Espressif ESP32-based board adopting the familiar form…
![Pi Top [4]: Raspberry Pi 4 Based mini-PC](https://oe2.open-electronics.org/wp-content/uploads/2019/06/pitop4.webp)
Pi-top has preannounced its first mini-PC form factor Pi-top and the first Pi accessory to feature the new Raspberry Pi 4 Model B. The pi-top [4] works more like a portable PC, with the Raspberry Pi 4 encased in a rectangular (and colorful) vessel. Pi-Top is eager to tout the performance advantages of the latest-and-greatest…
A new Raspberry Pi stepper motor and DC bonnet has being designed by Adafruit and is now available to purchase from their online store priced at $22.50. The Raspberry Pi bonnet can drive up to 4 DC or 2 stepper motors with full PWM speed control offering a great solution for robotics, DIY milling machines…
SparkFun has released the company’s first open-source, embedded-systems module—SparkFun Artemis, Engineering Version—to empower engineers, prototypers, and R&D teams to integrate the TensorFlow machine-learning platform into any design. Additionally, the team has launched three boards with the unshielded module: BlackBoard Artemis, BlackBoard Artemis Nano, and BlackBoard Artemis ATP. Built around the ultra-low-powered Ambiq Micro Apollo 3 processor, and powered by…
Radxa recently unveiled many news about its products, adding NVMe support to the Rock Pi 4 v1.4 model and launching a tiny Rock Pi S board for voice applications, and a Rock Pi PoE HAT for adding Power-over-Ethernet to the Rock Pi 4. Rock Pi S: presumably, this will be an open-spec community backed board…
Researchers from Cornell University and the University of Pennsylvania have created a lifelike robotic lionfish with a circulatory system. That circulatory system enables the fish to circulate synthetic blood throughout its body. The blood is a liquid triiodide cathode, which circulates past zinc cells submerged in an electrolyte. As the zinc oxidizes, it releases electrons,…
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