Archive for the ‘Arduino’ Category

LipSync is an Arduino-based assistive device for smartphone use

Monday, September 12th, 2016

With a mouth-operated joystick and “sip and puff” controls, the LipSync aims to make smartphones more accessible for everyone.

For the huge number of people that use them, smartphones have certainly made their lives easier. Unfortunately, these amazing gadgets are difficult to use for those with limited or nonexistent use of their arms and hands. The LipSync attempts to address this issue with a device that can be made in just over a weekend’s worth of work. It uses an Arduino Micro along with a Bluetooth module for communication, and allows someone to interface with the phone using its tiny joystick, as well as the user’s controlled breath. (more…)

Relive some arcade memories with a desktop coin pusher

Friday, September 9th, 2016

Remember Ryan Bates’ mini vending machine, the Venduino? Well, the Maker has now built a wooden coin pusher that’ll complement his earlier project quite nicely.

If you’ve seen a machine at an arcade with coins hanging off an edge, you probably thought, “Wow, if I just put one more quarter in, I’ll get like $10 back.” Although perhaps he could make money with it, Bates built his own as a fun distraction. His machine uses a cam mechanism to push a “dozer” back and forth so that when you drop a penny down the money input chute, it hopefully knocks a few coins into the area where you can collect them. (more…)

Use an Arduino Uno to interface with your Apple II

Friday, September 9th, 2016

Instead of a huge box of disks, David Schmenk decided to use an Arduino to add a massive amount of storage.

For Apple II enthusiasts, loading games or other programs via a normal disk drive works, but since storage capabilities have exploded since the 1980s, Schmenk’s setup uses an Arduino Uno to access an SD card via the gameport. As seen in the video below, Schmenk is able to read and write data, pulling up Lode Runner in 45 seconds. The Arduino shield’s real-time clock can also be accessed if needed. (more…)

Drive an RC car with first-person view

Friday, September 9th, 2016

If you’ve ever dreamt of sitting in the driver’s seat of an RC car, you’ll love this recent project from Paul Yan. The designer has hacked together a first-person driving experience using a natural steering wheel that lets you feel like you’re playing a race kart game in real life.

As he describes in the video below, Yan used an old PS2 wheel controller, two Arduinos, a mini FPV camera, and a headset to act as a standalone monitor. The RC car–which is equipped with a Micro–interfaces with the wheel using an Uno and a PS2 Shield. Both Arduinos communicate via a pair of NRF24L01 modules.


Upgrade your USB keyboard to Bluetooth with this Arduino device

Thursday, September 8th, 2016

If you have an old keyboard lying around and wish it were wireless, Maker DastardlyLabs has a solution.

The “HID Relay” is a small adapter that uses an Arduino Pro Mini, a Bluetooth module, a USB host shield, and a few other components to upgrade any USB keyboard to Bluetooth. DastardlyLabs has made three videos to explain the entire “Bluetooth-ification” process–which can be found below.

So far, the method has worked with all of the keyboards that DastardlyLabs has tested it on, as well as most mice (except for one “gamingish” USB mouse). The Arduino source code and build notes are available on GitHub. The HID Relay was inspired by a recent Arduino hack by Evan Kale.  (more…)

Connected question mark hopes to spark 1 million conversations

Wednesday, September 7th, 2016

Suicide prevention charity R U OK? has partnered with digital innovation agency Fusion to create a fully-connected device in the form of a question mark with hopes of sparking a million conversations throughout Australia. Similar to the Olympic Torch, Quentin will be passed from person to person as it makes its way from town to town starting on Thursday, September 8th.

But unlike the Olympic Torch, the route is not planned. Instead, the journey is determined by the challenge it issues to each new keeper motivating them to reconnect face-to-face with people in their lives. (more…)

The Maven Box is an Arduino controller for software developers

Wednesday, September 7th, 2016

Matthias Faust has created an Arduino controller for speeding up software development.

The “Maven Box” is based on an Uno and communicates with a Java program running on a desktop. The device is equipped with customizable buttons, switches and a dial, which act as physical inputs for expediting his daily routine. This enables Faust to select a branch from several GitHub projects, stash changes before pulling, pull the changes, trigger a maven build, as well as display the status of six tests on a set of notification LEDs. (more…)

Convert a weed wacker toy into a metal detector

Tuesday, September 6th, 2016

Evan Kale is back with another hack. This time, the YouTuber decided to convert a weed wacker-like toy into a metal detector with the help of an Arduino Uno.

As Kale explains, the project is based on a Colpitts Oscillator, which combines an LC circuit with a transistor amplifier for feedback. The frequency of oscillation is somewhere in the 100KHz range, which cannot be heard by humans. Enter the Arduino. When the trigger is pressed, an Arduino program translates the oscillation into an audible tone that is played out of the speaker. When the oscillation exceeds a certain threshold, it also emits a celebratory light show because… why not? (more…)

Unlock your door with a simple hand gesture

Monday, September 5th, 2016

Gone are the days of fumbling with your keys! Adham Negm has come up with a way to open your door with a simple hand gesture while holding your smartphone.

To accomplish this, Negm uses an Arduino Uno, a servo motor to move the bolt, and a 1Sheeld to interface with the smartphone. The 1Sheeld reads the device’s accelerometer data, and then activates the servo when it recognizes a predefined gesture. (more…)

3 simple filtering techniques to eliminate noise

Monday, September 5th, 2016


Increasing accuracy in the collection of data coming from sensors is a need that, sooner or later, Makers need to face. Paul Martinsen from MegunoLink created a tutorial to eliminate noise from sensor readings on Arduino with three simple filtering techniques.

The Averaging and Running Average techniques are easy to implement as they work by adding a number of measurements together, then dividing the total by the number of measurements. In both cases, the downside is that it can use a lot of memory. (more…)

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