3D Magnetometer Mouse In Processing

October 18, 2009 by Zach Banks 22 Comments

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[etgalim] works in Solidworks extensively and wanted a more intuitive way of rotating objects onscreen. To do this, he created a mouse that responds to rotation. He put a 3D compass module inside an old mouse and wired it up to an Arduino. The Arduino then relays the I2C sensor data to the computer. So far, he has a Processing script that uses the mouse to rotate a cube, but eventually he wants to write a Solidworks plugin. It’s a bit shaky, and we think it would be a bit smoother (and cheaper) if he used gyros like the jedipad. Video after the jump.

Continue reading “3D Magnetometer Mouse In Processing” →

RFID-enabled Robot…mood…tail…thingy.

October 16, 2009 by Phil Burgess 38 Comments

moodtail

Furries: is there nothing they cannot do? Well okay, “shower” remains an elusive concept, but wearable technology seems to be in, as evidenced by this robotic mood tail. [Wei-Chieh Tseng]’s adorable Arduino-driven fashion accessory operates either via Wii Nunchuk or a set of RFID cards tagged with specific emotions to depict.

Details are scant. It appears to have been a project for a physical computing or design class. One thing’s for certain: Halloween is going to be awesome.

[via Engadget]

Turntable Sequencer Scratches With Coins

October 15, 2009 by Mike Szczys 10 Comments

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[tvst] has an interesting take on a sequencer. His design uses coins on a turn table to trigger midi events in a loop. There are four tracks available, each having its own sensor above the spinning platform. The sensors consist of an IR transmitter and receiver setup as a voltage divider. When something passes below the IR transmitter and reflects the infrared waves back up to the receiver, the output of the sensor moves to digital high. The four sensors are connected to an Arduino which is used in conjunction with ttymidi, which converts the Arduino data into midi events.

We like projects that provide a more tangible interface for the user. Coins work well for this setup. They reflect infrared enough to trigger the sensors, and they’re easy to pick up and move without upsetting the rest of the tracks. It would be great if this could be expanded to differentiate between coins (pennies versus dimes, etc.) in order to increase the resolution from four different events to eight or more. Check out the video after the break. Continue reading “Turntable Sequencer Scratches With Coins” →

Metal Race Combines Operation And Calculator Game

October 9, 2009 by Mike Szczys 9 Comments

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[Greg] was feeling nostalgic about the game RACE for to TI-83 graphing calculator. In the game, your car is stationary with controls to move the scrolling maze from side to side in order to avoid a crash. He set out to build a physical version of the game with a don’t-touch-the-side concept that reminds us of Operation.

The game board is a wire frame constructed from paperclips then attached to a motorized frame. The vehicle is also metal and is attached to the lens sled from a scrapped CD-ROM drive. The maze scrolls from left to right with up and down vehicle motion controlled by two arcade buttons. An Arduino controls the motors and monitors the button inputs. He has plans to add a buzzer that sounds when the metal car “crashes” in to the wire walls of the maze. We’ve embedded video of the working game after the break. For more build photos take a look at his flickr set. Continue reading “Metal Race Combines Operation And Calculator Game” →

A Stirring Hack

October 8, 2009 by Devlin Thyne 29 Comments

Stirring Flask

[Oleg] of Circuits@Home and maker of the USB Isolation Board and the USB Host Shield has a new, two-part hack for his chemistry set. In Part 1 of this hack, [Oleg] discusses the method he uses to make a stir bar spin and what types of stir bars work the best. Part 2 discusses the motor control code and circuit. Given the ample amount of capability leftover in the Arduino he used, we would like to see this stirrer paired with a heating element to have a complete hotplate/stirrer. What do you think you could do with or to improve this device?

Growing Algae With An Arduino

October 2, 2009 by Matt Schulz 58 Comments

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We’ve seen automated grow boxes of all shapes and sizes, but all were for growing plants. [Jared] over at Inventgeek wanted to do something similar for his algae. He started off with an Arduino-based solution that allows the controlled pulse of LEDs connected to his standard bioreactor as a prototype. Once he determined his proof of concept worked, he began work on a design based on the Arduino Pro Mini that has more advanced features such as temperature monitoring and algae culture density monitoring via some fancy IR voodoo. The code is open source and the hardware is easily obtainable, all that remains is the desire to grow algae.

Arduino DMX Controller

October 2, 2009 by Caleb Kraft 10 Comments

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This Arduino powered DMX controller came along at just the right time. We had shown you a project earlier that involved the DMX system and several commenters remarked on the price to get into DMX hardware. If you happen to have an Arduino around, you can build a DMX controller. He found a schematic for a DMX driver, and built some custom code to control it all. You can download his code on the project site.