Hall Effect Sensor

A Hall effect sensor is a device that is used to measure the magnitude of a magnetic field. Its output voltage is directly proportional to the magnetic field strength through it. Hall effect sensors are used for proximity sensing, positioning, speed detection, and current sensing applications. Frequently, a Hall sensor is combined with threshold detection so that it acts as and is called a switch. Commonly seen in industrial applications such as the pictured pneumatic cylinder, they are also used in consumer equipment; for example some computer printers use them to detect missing paper and open covers. They can also be used in computer keyboards, an application that requires ultra-high reliability.

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TMD-1: a Turing Machine Demonstrator

“You can find numerous Turing machine implementations on the internet that are absolutely stunning. The makers of these devices often set lofty goals for themselves, like “mechanical only solutions”, which they met and exceeded with aplomb. In my humble opinion …

Automated Perpetual Calendar

“Years ago I came across a wooden perpetual calendar and I loved the idea. After thinking about it for months I decided I wanted to make one myself; however, there was a long list of things I wanted to do …

Digital IO library

“This goal of this Digital I/O library is to ease the use of simple sensors and devices attached to Digital I/O pins. If you like this library please star or comment on github to pat me in the …

Project  BandoMIDI

BandoMIDI

“For years I owned a soundproofed cabin where I played the bandoneon without bothering anybody. I sold this cabin while moving to another flat and faced again the issue of practicing silently. As my day-to-day job is embedded systems, I …

Mesmerizing Magnetic Wall Clock

“Mechanical clocks have always fascinated me. The way all of the internal gears, springs, and escapements work together to result in a constant reliable timepiece has always seemed out of reach for my limited skill set. Thankfully modern electronics and …

Planetary Gear Clock

“(Old) mechanical clockworks are incredibly interesting and pleasing to watch, but are unfortunately almost impossible to build yourself. Mechanical clocks also lack the carelessness of the precise digital technology available today. This Instructable shows you a way to combine the …

Interfacing Hall Effect sensor with Arduino

“Easy way to interface Hall Effect sensor to be used later for proximity sensing, speed measuring and switching This is a fast and straightway tutorial on how to interface you Hall-Effect sensor with Arduino board, here I’m using Arduino …

ESP8266 POV Fan With Clock and Web Page Text Update

“This is a variable speed, POV (Persistence Of Vision), Fan that intermittently displays the time, and two text messages that can be updated “on the fly.” The POV Fan is also a single page web server that allows you to …

Somatic - Data Glove for the Real World

“The Somatic is a wearable keyboard and mouse that’s comfortable, unobstructive, and ready for all-day wear. It’s loaded with all the hardware to translate hand signs and motions into actions, like the somatic component of a spell in …

wood lathe digital readout

“I bought a wood lathe a few months ago and I thought it would be fun to make my own digital readout. A digital readout is simply an electronic display that shows you the spindle speed of a lathe. I …