The RoboTrombo is a MIDI-controlled robotic trombone

Inspired by Wintergatan’s Martin Molin, iSax set out to create a MIDi-controlled robotic trombone of his own. Although the aptly named RoboTrombo may not replace professional trombone players any time soon, it’s nonetheless an impressive musical hack.

The instrument is controlled by an Arduino Nano running Firmata, along with a host computer, and employs a variety of pneumatic and electrical actuators to produce the tunes.

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HID-Compliant UPS with Arduino

I’ve been playing with Arduino recently to see what it can do for me. I have an old “dummy” UPS, which cannot report its status to the host computer since there is no USB port on it. One of the projects I had in mind is to create “brains” for the dummy UPS with help of Arduino board. The purpose of such UPS brains would be to read internal UPS status by measuring remaining battery capacity, charging/discharging state, battery current, voltage etc. All these readings should be then passed through the USB interface and be interpreted by the host operating system of the computer in the same fashion as it is done with commercial smart UPS (say, by APC).

I did not want to mess with developing hardware drivers for my custom UPS and I wanted it to be “plug-and-play” so I decided, after some research, to implement a HID-compliant interface according to this specification. HID stands for “Human Interface Device” and was originally designed for keyboards, mice, joysticks and similar devices for human input, however it has been extended recently to support power devices such as UPS, batteries and chargers, which can benefit from using the HID standards for intelligent communication with the host computer.

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Skee-ball-like indoor golf game gets an automatic scoring system

After making an indoor Executive Par 3 golf game with a ramp and cups like a skee-ball machine, creator “gcal1979” decided to add an automatic scoring system to the rig.

What he came up with uses infrared break beam sensors for each of the three holes, feeding info to an Arduino Mega. Stats are shown on an electronic scoreboard behind the play area, with a seven-segment display for the hole number, as well as two four-digit units for player scores.

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Arduino-based machine makes cutting and stripping wires easy

If you need to strip a wire or two, that’s easy enough. However, what if you need tens or hundreds of wires stripped to the exact same length? Such a task would quickly become tedious, but with Mr Innovative’s Arduino Nano-based machine all you have to do it pop in a few numbers and it takes care of the rest!

The automated device uses a 3D printer-like stepper mechanism to feed wire though a flexible length of tubing, which comes out on the other side positioned under a wire stripper. A servo is employed to aim the tubing and wire at either the cutting or stripping portion of the tool, which clamps down via a stepper and linkage setup. User interface consists of a 2.8″ touchscreen, allowing one to define the wire and stripped lengths, as well as how many individual wires are required.

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Debra Ansell Is Quickly Becoming the “Go-To” Authority on Great-Looking LED Lighting!

It’s almost a guarantee that if you haven’t yet incorporated the ubiquitous WS2812x ‘NeoPixel’ or APA10x ‘DotStar’-style “digital” LEDs into a project, you will no doubt have seen the myriad works of many a maker, ranging from blinking, bedazzling digital jewelry to drive-in scale digital LED video walls.

No matter the form factor, getting these bare LED emitters to look their best can sometimes take quite a bit of work! A range of factors, from ensuring that you have provided an adequate power supply to diffusion of the light emitted from these devices — and everything in between! — means that there is usually a direct trade-off between the amount of thought that goes into the incorporation of these LEDs, and how fantastic the final product looks!

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Biorhythm Clock using Arduino Nano, RTC, 1602A Display, 74HC595

It’s a biorhythm clock using Arduino Nano A biorhythm is a theoretical process by which the human body and mind are regulated according to set patterns. Biorhythms are usually separated into three distinct groups. The emotional, mental, and physical cycles. Classically, the lengths of these cycles are 28 days, 33 days, and 23 days respectively.

An Arduino Based Laser Guitar

Our love for music was not enough for us to learn playing instruments except for a few basics of guitar and saxophone. The background in physics we had pushed us to delve into incorporating technology and music together. We thought of the possibility of enhancing the guitar, the most famous instrument of all time. It could outperform the classical guitar with its metal string by creating more flexible options for the player and his/her performance. The project aims to design and build a guitar based on an optical setup built of Lasers, Beam Splitters, and Light sensors. The strings of the guitar will be replaced by an optical setup. The general technique for playing guitar to shorten the string by pressing your hand on the desired fret, and plucking with your other hand the string needed to produce the note or chord you want. If no fret is compressed, it is called an open string. Note that many techniques were invented during the years: Pulling, tapping, sliding, etc… however, we will stick to the standard way of guitar playing.

The design is composed of two modules, mimicking the two main tasks of playing guitar. By receiving certain information, The microcontroller would generate the desired note.

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