Vertical pen plotters, which work by suspending a drawing device between two variable lengths of cable, can be a lot of fun. When his kids stopped using a 780x1200mm blackboard, ‘tuenhidiy’ had the perfect surface on which to create his own! The project uses a pair of NEMA 17 motors to dictate the lengths of timing […]
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 anytime 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 […]
When working with electronics, voltage is fairly easy to measure, but current often takes a bit more finesse. For this purpose, Utsav Shah decided to create his own current sensor capable of handling up to 15A. The DIY device uses a shunt resistor, a voltage divider, and an LM358 op-amp to produce a voltage that […]
After three short years of use, Roni Bandini’s Samsung washing machine started to act erratically, and several technicians looked at it without really fixing the problem. Bandini then decided to take matters into his own hands and replaced its brains with a MKR WiFi 1010 board, along with four relays and a trio of buttons. This new […]
Over-the-air (or OTA) programming is a very useful feature in all those cases where your devices are located in places that are not easily accessible. For example, you built a weather station using the Oplá IoT Kit, installed it on your rooftop, and started monitoring the weather from an IoT Cloud dashboard. That’s great until […]
Arranging dominoes in such a way that they knock each other down in sequence can be a fun pastime, but what if you would like a machine to take care of lining them up for you? As seen in the video below, Lewis of DIY Machines has come up with just such a device featuring 3D-printable […]
We’ve all seen Christmas ornaments shaped like a ball – interesting, but a bit passive. Will Donaldson, however, has created an amazing enhancement to these decorations by adding a rheoscopic fluid inside that shows turbulent swirling patterns as it moves. The fluid is simply tap water and food coloring, plus the special rheoscopic concentrate that […]
LiDAR (or “light detection and ranging”) sensors are all the rage these days, from their potential uses in autonomous vehicles, to their implementation on the iPhone 12. As cool as they are, these (traditionally) spinning sensors tend to be quite expensive, well out of reach for most amateur experimenters. Daniel Hingston, however, has managed to build […]
Electric guitars use pickups to sense string vibrations and make music. While a wide variety are available for purchase, what if you would like to make your own custom device for audio experimentation? In the video below, Ezra Spencer from the Mixed Signal shows how to do just that by automatically winding a pickup coil […]
Home for the holidays? This is the perfect time to make something! The Arduino Project Hub offers around 6,000 projects for levels: each tutorial includes detailed assembling instructions and the Arduino code. We have selected the top five Arduino projects for beginners; you don’t need a degree in engineering — these are an easy and […]
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