Collaborate Disseminate
Despite being otherwise capable, not everyone is able to feed themselves. [Julien]’s robot arm project aims to bring this crucial independence back to those people. Assistive devices in this space do exist, but as always they’re prohibitively expensive and the approval process is a nightmare. The development of the arm …read more
Continue reading An Open Assistive Robotic Arm to Help People Feed Themselves
This hacker has been wanting to design an Enigma machine simulator for a while, but didn’t take the leap until they realized there was a compact Arduino with a surplus of I/O.
The logs go through all sort of variations on the machine. Everything from a plug board variation similar …read more
Continue reading An Arduino and an Enigma All Rolled Into One
[nathan] sends in this combo of projects which combine to make a very interesting reflow oven.
First is PowerCore which has two microcontrollers, an ATmega and a ESP8366 working in tandem to turn the AC on and off at set intervals. A GLCD displays the current profiles and WiFi allows …read more
Continue reading With PowerCore and FluxLamp, Reflow Is Possible
[Discrete Electronics Guy] sends in his short tutorial on building a high voltage power supply from simple things.
The circuit is a classic, but we love the resourcefulness shown. The ignition coil comes from a three wheeler, the primary power supply is a ATX supply from a computer and the …read more
Continue reading Drive A Plasma Ball With An ATV Ignition Coil And A 555
[MJKZZ] sends in this entertaining little tutorial on building a small automated cannon out of a syringe.
He starts the build off by modifying an arc lighter, the fancy kind one might use to light a fire on a windy day, so that it can be controlled by a micro-controller. …read more
Continue reading Death to all Coca Cola Cans with This Miniature Arduino Powered Cannon
We see a lot of great STEM education projects. These projects have a way of turning into something much larger. How many commercial devices and machines are built on Raspberry Pi’s and Arduinos? [Ryan Beltrán] is using common materials to teach people how to clean water. This particular kit demonstrates …read more
Continue reading Learn Water Purification Techniques with this STEM Learning Kit
The one thing you might be surprised not to find in [Laurent]’s beautiful tonewheel organ build is any tonewheels at all.
Tonewheels were an early way to produce electronic organ sounds: by spinning a toothed wheel at different frequencies and transcending the signal one way or another it was possible …read more
Continue reading A STM32 Tonewheel Organ Without A Single Tonewheel
[Mile] put together this stunning LED matrix watch, on which the stars of this show are the 256 monochrome 0603 LEDs arranged in a grid on its face. The matrix is only 1.4in in the diagonal and is driven by a combination of an LED driver and some shift registers. …read more
Continue reading LED Matrix Watch Is The Smart Watch We Didn’t Know We Wanted
[Amirreza Nasiri] sends in this cool USB keystroke injector.
The device consists of an Arduino, a Bluetooth module, and an SD card. When it’s plugged into the target computer the device loads the selected payload from the SD card, compromising the system. Then it does its unique trick which is …read more
Continue reading Inject Keystrokes Any Way You Like With This Bluetooth Keystroke Injector
[minh7a6] loves the Adafruit Feather, but sees some room for improvement.
First is the matter of 5V tolerance. While just about everything is available in a 3.3v range these days, sometimes it’s just nice not to have to care. The main controller on the Feather is plenty powerful, but its …read more
Continue reading A STM32F4 Based Arduino in the Feather Form Factor