Forum user JLJ has developed an Air Data Computer.  This compact DIY   computer measures air data such as air speed and temperature.

Be sure to checkout the project website for detailed information on how you can build your own.

The project is Open Source with code and hardware detail published on GitHub.

 

Forum user Blackaddr developed a guitar audio shield .

The TGA Pro is  stereo-sound capable and designed specifically for use with guitars providing an onboard preamp specifically designed for the wide range of voltages and impedances encountered when dealing with guitars, pedals and guitar amps. It also provides onboard MIDI connectors for use with the Arduino MIDI library, and optional external SRAM for additional data storage. This shield makes it very easy for musicians to add effects while playing guitar.

You can read about the board’s development over on this forum thread.

In this video demo the only gear used is a guitar, the TGA, a MIDI expression pedal, and a tube amp.  The expression pedal is used to open the input to the SOS channel and feed in the same chord in two different octaves to get a nice blended background ambience.

Be sure to check out blackaddr’s Tindie page for all the details on this shield.

Forum user jasper is developing a connector board for the Teensy 3.5.  This useful board breaks out many of the pins to easily accessible connectors.

 

Over 20 of the pins are broken out by this board.  It also sends power and ground to many of the connectors, making it useful for wiring in sensors and peripherals.

Forum user luni couldn’t find a stepper motor library to meet his needs, so he wrote his own.  The library is able to handle up to 300,000 steps per second.

This video shows two steppers running up to 160,000 steps/sec.

There is a great write up and explanation on luni’s GetHub Page.  The page includes excellent explanations and diagrams on the three types of movements.

The library handles the three different movement modes when controlling more than one motor – Sequential Movement, Synchronous Movement, and Independent Movement.

Luni published performance metrics running 1 and 3 motors on 2 different boards.

 

 

Dimitre Lima was an artist in residence at the Red Bull Basement Festival and put together this impressive LED art installation.

 

 

2 Videos

Phillip Schuster built a handy little mult-tool for working on hardware.

This neat little gadget can do things like generate PWM or DAC signals, read serial output of your microcontroller project, as well as several other useful functions.  The design of the Little Helper was inspired by the iPod interface.  It’s custom touch wheel allows for fast one-handed operation.

The project is open source.  You can find the code on Github.

There is some additional discussion of the project on HackADay.

The folks over at Cirque have put together a kit for trackpad development.  This nifty little kit is Arduino based and includes everything you need to get going with trackpad development.

They have sample code, reference designs, and developer tools available over on GitHub.

vitormhenrique recently posted about his custom arcade machine over on the forum.  This is a great looking cabinet and it even lights up with LEDs when not in use. 

The forum post offers some more details about the build.  vitormhenrique has made the controller board public on OSH Park and is planning to make the plans and code available as well.