The Kyub: 3D Feather Touch MIDI Keyboard

Keith Baxter made a hand held MIDI keyboard called The Kyub.  This device using capacitive sensing and has an internal accelerometer for controlling the volume.

This video from their Kickstarter campaign gives a good overview and explanation of how the Kyub works.

This is a pretty cool video demoing the Kyub configured as a set of drum pads.

The software and details about how to build and use the Kyub are available on the Kyub website.

Tachometer Using Photosensor

Elliot Carter published a tutorial on making a photoresistor-based tachometer.

The project came about when he needed to test the top speed of a stepper motor.  After putting it together the project became an important diagnostic tool for a larger project – not only does it test the top speed of stepper motors but it also works as a tool to verify code.

The tachometer measures rotational speed using only simple light sensor with an op-amp comparator circuit.  While many mechanical engineers might cringe at the thought of an op-amp, Elliot’s team found a tutorial that explained them well.

Laser Ukulele

Marcus Herbert took an inexpensive ukulele, cut the strings off, designed some circuits, and turned it into a fully functioning laser ukulele that sounds great.

Some of the features include:

  • Custom tuning mode allows 128 notes as per the MIDI standard (12 notes [C, C#, D, D#, E, F, F#, G, G#, A, A#, B] across 11 octaves for C-G and 10 octaves for G#-B)
  • Full soprano ukulele fretboard (12 frets)
  • Four lasers as strings
  • Virtual capo can be placed along any of the 12 frets
  • Although this is in the shape of a ukulele, the computer software determines the final sound, so the physical instrument could end up sounding like whatever instrument you desire
  • Note velocity can be customized from 0 to 127 and is displayed on the LCD screen


Enchant Lightsaber FX Board

The Firebrand Forge has created an open source FX board (Kickstarter) for light sabers and other props.

UPDATE: This board appear to now be available on Tindie.


The ENCHANT board is a light and sound controller with an accelerometer and gyroscope.  It’s compact size makes it ideal for props, like light sabers, and wearables.

This video shows the light saber in action.

The rewards in their Kickstarter campaign include levels from an ENCHANT board, an ENCHANT wearable skirt, and multiple light sabers.




Cochlea Prototype For NeuroBytes

Zach Fredin made a cochlea prototype  – a human ear response for NeuroBytes neuron simulator system.

This video shows the prototype in action.

NeuroBytes are hands-on electronic neuron simulators that allow individuals to learn about the brain while physically building their own neural circuits, synapse by synapse.

Neuro Tinker has a Kickstarter in process for their NeuroBytes system.  The system is made up of modular neuron simulators that allow the user to build and simulate their own electronic brain.

NeuroBytes are fully open sourced,  All source files – schematics, PCB Layout, firmware, etc – are available and shared freely.