Tag Archives: arduino

Rebuilding a Passap E6000 knitting machine with Arduino and Raspberry Pi

via Arduino Blog

Irene Wolf is the owner a Passap E6000, a computerized knitting machine which features pair of needle beds, and decided it was time to give it an upgrade. In particular, she wanted the ability to control its rear needle bed automatically in a similar manner to the way the front is normally operated for extra functionality.

To accomplish this non-trivial task, she’s using a Raspberry Pi 3 as the new controller, along with two Arduino M0 boards to directly handle the machine’s actions via interrupts.

She’s also driving the device’s motor with a frequency converter and an Uno, as the original control board was broken. Plenty of details are available in Wolf’s write-up and on GitHub, and you can even see it in action (plus a resulting knitted sock) in the video below.

Robotic cornhole board guarantees three points every time

via Arduino Blog

You may have seen Mark Rober’s automated dartboard or Stuff Made Here’s backboard, which use advanced engineering to create apparatuses that ensure you “can’t miss.” Now that summer is in full swing, what about a robotic cornhole board?

Michael Rechtin decided to take on this challenge using a webcam pointed at the sky for sensing and DC motors that move the board along an X/Y plane on a set of sliding drawer rails.

When a bean bag is thrown, the camera feeds the video over to a laptop running a Processing sketch to analyze its trajectory and passes adjustment info to an Arduino. This then controls the motors for repositioning, which attempts to predict where the bag will land and guide it into the hold for three points!

Clockception combines 24 clocks to create one cool clock

via Arduino Blog

What if you were to use the hands of a clock not as an individual display, but as part of an array combines together to form digits? That’s the idea behind Clockception by creator “Made by Morgan,” which utilizes 48 servo motors to drive 24 clock-like faces for an 8×3 display.

The build uses an Arduino Nano and three servo driver boards to control movement, along with a DS1302 RTC module to track time. The overall clock is constructed out of stained poplar, while the dial assemblies are 3D-printed.

Clockception was actually inspired by the ClockClock project by Humans Since 1982, but by using his own design and DIY methods, he was able to get the cost down to around $200.

Change the volume of any app on your PC with the turn of a knob

via Arduino Blog

Overall computer volume control is important, but what if you want to get more granular, adjusting sound from various applications individually? Rather than going through a series of menus and on-screen sliders, Ruben Henares’ Maxmix lets you do this on the fly.

Based on an Arduino Nano, the simple yet stylish knob takes input from an encoder and button to cycle through and select a program. Just push down and then rotate to turn the volume up or down. Want to switch from Discord to Spotify? Click it again and repeat the process.

A small OLED screen on the Maxmix shows which app is running, and there’s even an optional LED ring for extra lighting effects. All the electronics are housed inside a nicely designed 3D-printed enclosure.

You can find the build instructions on Henares’ site and see a demo of it below.

Build a comment-critiquing keyboard adapter using TensorFlow Lite and Arduino

via Arduino Blog

If you’ve ever left an online comment that you later regretted, this anti-troll bot will keep that from happening again by letting you know when you’re being a bit too harsh.

The device — which was created by Andy of element14 Presents — intercepts raw keyboard inputs using a MKR Zero board and analyzes them using a TensorFlow Lite machine learning algorithm.

As an output, the Arduino controls the mouth of a rather hilarious human cutout via a servo motor, which as seen in the video below, also features a wisp of black hair and oversized googly eyes. If you’re typing happy thoughts, its mouth turns up into a smile, while mean words produce a frowny face.

The project is a great example of running ML code on limited hardware, and more info on the sentiment-analyzing keyboard adapter can be found here.

Capture cinematic shots with this motorized slider and pan-tilt camera mount

via Arduino Blog

DIY camera sliders are a great way to get professional-looking video shots on an amateur budget, but few can compare to the quality of this project by “isaac879.”

His device features a pan/tilt mechanism outlined in a previous video, but in the clip below he’s attaching it to a piece of aluminum extrusion to enable it to slide as well.

The build is controlled by an Arduino Nano, which actuates three stepper motors using A4988 drivers. The carriage is pulled along by a belt drive, via a stepper mounted to the carriage itself. This allows for easy disassembly when needed.

It’s a clever and extremely clean design, and the video shows some great examples of the shots it can take (even when upside down).