GeekCon participants add a switch and actuator to a HAL 9000 model for the world’s largest “leave-me-alone box.”

You’ve probably seen the silly boxes that when you flip a switch to turn it “on,” an arm comes out to turn itself “off” again. At this year’s GeekCon Makers conference, participants decided to make a useless machine, but in place of a simple box, they made a model of the HAL 9000 computer from 2001: A Space Odyssey.

Rather than the normal “useless” configuration, it turns itself “on” instead of “off” in an apparent nod to the fact that the computer didn’t want to be disconnected in the movie. One Arduino controls a projector for the “eye” assembly, while another takes care of the servos and audio. HAL’s sounds are stored on an SD card inside an Adafruit Music Shield.

Behind the eye, made out of round lamp and a red plastic diffuser, there is a projector. The projector is connected to Arduino TVout which only outputs a white filled circle that also changes its diameter based on microphone input. Having the circle moving according to the sounds gives HAL’s eye more realistic look.

The second Arduino was in charge of servos and audio. We divided the tasks to two Arduino Uno to avoid collisions in PINs requirements.

You can find more information on this project on its blog and in Hackaday’s recent writeup. If you just want to see the Arduino code, it’s available here.

(Photos: Rafael Mizrahi)

With his beautifully-colored classroom “noise-o-meter,” Mr. Jones knows when things are getting out of hand.

When you were in school (or if you are in school) the teacher likely told the class to be quiet, perhaps repeating him or herself over an over during the day. The teacher, however, likely never really defined what is good and bad. Mr. Jones has finally solved this issue by creating a classroom “noise-o-meter” using an Arduino, an electret microphone, and a programmable LED strip. In order (apparently) too keep the class in line, noise is simply marked as green for “expected,” amber for “louder,” and “red” for too loud which corresponds nicely with more “traditional” VU meters.

I built this a short while ago as an idea to use in a primary classroom setting. Poster displays are often used by primary teachers wanting to control the noise levels in their classrooms but I wanted to add technology to make it dynamic and responsive. The motivation for this came after seeing the Adafruit Digital NeoPixel LED Strip online and realizing its potential as part of a VU meter.

Are you a teacher and want to build one for yourself? You can check out Mr. Jones’ Instructables page or his own website in a different format.

This dust buster-based robotic vacuum may or may not work as well as a Roomba.

If you’re fascinated by the idea of a robotic vaccum cleaner to keep you from having to do certain chores, you could buy an iRobot, or you could make your own instead. This particular DIY model uses four motors for locomotion, an Arduino Uno, an IR and ultrasonic sensors to avoid obstacles, as well as a (formerly) handheld vacuum cleaner to suck up debris.

The assembly sits on a wooden chassis, and as author B. Aswinth Raj is quick to point out, many variations on this robot could be made. Code is included and fairly short, so whether you’d like to copy this design or improve upon it, the bot should certainly give you some build ideas!

In this project we will use the power of embedded systems and electronics to make our own robot which could help us in keeping our home or work place neat and tidy. This robot is simple four wheeled vacuum cleaner which could smartly avoid obstacles and vacuum the floor at the same time. The idea is inspired by the famous vacuum cleaner iRobot Roomba…

You can find more detailed instructions, along with its code and a circuit diagram, on this CircuitDigest page.

An Arduino plus fake food and audio capabilities equals something truly unique!

Randy “randofo” Sarafan had an idea when he was in college: a takeout container that talked. To the world’s great benefit, now that he knows about electronics, he finally made this dream a reality. Using an Arduino Mega with a Seed Studio Music Shield, he was able to coordinate the movements of a servo and thus the lid of a box with the audio coming out of a speaker. After attaching googly, or “googily” eyes, and modifying a fake serving of spaghetti, he had something that should be quite entertaining!

This idea came about after having taken a special effects film class when I was in college. While in the class, I made a short film of myself talking to a takout container with a face drawn on it. However, not having the know-how to do anything with electronics, the initial version was being controlled by a friend pulling upon and releasing a thin fishing line. While I do not doubt that my friend was skilled at controlling the lid in this manner, I couldn’t help but thinking that it would be great if I could automate the whole thing — at the very least — less embarrasing.

You can find more info on how to build this “foodie” contraption on the project’s Instructables page!

A new version of the Arduino IDE (1.6.12) supporting OSX Sierra is available for download! All OSX users updating to Sierra are invited to also update the IDE to avoid crashes when uploading sketches.

This update includes an experimental integration with Arduino Cloud API already used by Arduino Create. The Arduino Cloud is simple tool to connect your Arduinos to the Internet and to each other. From now on, when you insert for the first time an Arduino/Genuino or AtHeart board which needs an additional core, you will be prompted to automagically install its bundled software.

You’ll notice that the example menu has been reorganized, making it much more consistent and easier to navigate.

We’ve released version 1.0.7 of Curie core as well, which is a transitional release guiding us towards 2.0.0 with BLE central role and a lot of other goodies. You can read all the details on the forum.

Not looking for a smartwatch? PIXIE is an Arduino-based NeoPixel wearable device that not only keeps time, but will also keep your geek cred intact.

You won’t find any numbers on this watch; instead, PIXIE uses LEDs to reveal the time–hours in blue, minutes in red, and seconds in green. Beyond that,  a capacitive touch switch on its strap will activate a flashlight mode.

In terms of electronics, PIXIE is equipped with an Arduino Pro Mini, an Adafruit NeoPixel Ring, a real-time clock module, and a few other components–all housed inside a simple cardboard box with a piece of transparent plexiglass.

Sound like you’d like around your wrist? Check out its Instructables page here.

Using an Arduino, along with a stepper motor and ball bearings, YouTuber GreatScott! has created a very smooth camera slider.

Time-lapse sequences can be interesting on their own, but if you can add motion to the camera, this adds a really neat element. To give a little extra flair to his video production, GreatScott! built his own motorized slider using stainless steel and aluminum parts. Movement is accomplished via an Arduino Nano controlling a stepper motor, and ball bearings are used to keep the shots smooth. You can see the results and process in the two-part video sequence below.

In this project, I will show you how I repurposed two old camera tripods in order to create a motorized camera slider. The mechanical system consist mostly of aluminium and stainless steel which makes the slider sturdy and pretty decent looking. The electrical system consists of an Arduino Nano with LCD, rotary encoder, limit switches and stepper motor.

Besides the videos seen here, check out GreatScott!’s Instructables writeup as well.

The MR-808 robotic drum machine looks like a gigantic Roland synthesizer, but plays with real instruments!

The Roland TR-808 was released in 1981 and was meant to replace a human drummer for practice purposes, but was instead used to produce music itself, helping to birth the electronic, techno, and hip hop genres. Moritz Simon Geist and the Sonic Robots collective, however, decided to turn this on its head, with a machine made to look like a gigantic ‘808, but containing real instruments.

With a variety of hardware, including an Arduino Uno and Mega, an audience can program the MR-808 using a tablet and get down to the grooves they create themselves!

In 2013 I [Geist] found Sonic Robots a loose group of friends, hackers, technicians and artists and we had the idea of reversing the concept of the ‘808 and putting the physical aspect back into this gorgeous drum machine. For the Installation MR-808 we began to replaced eleven sound with mechanical actuators like motors and solenoids, so that reals drums (snare, BD ..) could be played live.

You can read all about the device on the Sonic Robots page, as well as find more information on how it works here.

Joining a list of others from Germany, Spain, Italy and Portugal, Europe’s latest Genuino reseller hails from The Netherlands! Let’s give a warm welcome to Pieter Floris, who we recently had a chance to catch up with to learn a little more about the work he’s been doing with Floris.cc!

- Tell us a bit more about Floris.cc.

Early in 2009, I was searching for a good “learning kit for Arduino” for use in a physical computing course at Communication & Multimedia Design (CMD Avans University – Breda). I found the ARDX kit from Oomlout. I had some email contact with Aaron from Oomlout, got a list of components, started gathering parts, composing kits, and a few weeks later, Floris.cc was born. The ARDX kit was my first product (including the Arduino Duemilanove at that time). In the years following business was growing, I started reselling Adafruit, Sparkfun, Pololu, and I was even one of the first shops outside the U.S. reselling the Teensy boards. I still focus on education, making lots of kits for schools and universities.

- What’s your company’s super power?

Spectroscopy is an incredible tool for chemical analysis–and now you can make your own Bluetooth-enabled device with an Arduino Pro Mini.

If you took advanced chemistry classes, you may have had the opportunity to work with a spectrometer. It probably seemed like a magical gadget, identifying the chemicals in a substance through its light characteristics unlike the experimental methods you previously had to use.

Using off-the-shelf components–including an Arduino, a Bluetooth module, an LED, optical filters, and a LiPo battery–housed inside a 3D-printed case, the WiSci aims to take this tool out of the lab, and into the “real world.” By following the instructions on its project page, you can build one for just under $250.

What’s really neat is that the portable spectrometer can even scan a fruit and then wirelessly send the data over to an accompanying Android app to tell you whether or not the fruit is ripe. (You can view its IEEE Spectrum article for a little more background on that!)

A spectrometer is a very powerful tool. By analysing intensity/wavelength pairs of the interacted EM radiation with the material under study, detailed information like its chemical composition, crystal structure and other elemental information can be extracted. It can also be used for food analysis. For example, it can reveal adulteration in milk or oil and analyse toxins to understand causes of food poisoning to name a few uses.

To create your own, check out its Hackaday.io page here.