Recent Blog Posts

Motorfader Panel

Gerrit (forum user) built a panel that controls 8 motor faders.

The panel uses L293B H-bridges to drive the motors.  The fader wipers and touchtracks are connected directly to the Teensy. Each faders has it’s own PID control using 12 bit PWM at […]

Teenstrument64-LC

Jonathan Payne made the Teenstrument64-LC, a cool MIDI sequencer made from an Adafruit Untztrument.

This device features 3 instruments on 3 MIDI channels as well as a 32 step sequencer for each instrument.  It takes advantage of the native Teensy USB MIDI stack […]

LED Wall Visualizer

James Best a very cool wall mounted LED music visualizer that lights up his room more than the over-head lights do.

Armed with blue tape and some hand tools, James got to work mounting 900 WS2812 LEDs.  After a miss-step with some Gaffers […]

Dandelion Hunter

Arduino “having11” Guy created an autonomous robot to hunt down and destroy dandelions.

After being frustrated a dandelions out pacing his grass between mows,  Arduino Guy (who also does project consulting for) built a robot using a Devastator Tank Cassis from DFRobots, a Pixy2 Camera, and a Teensy 3.5, to roam a […]

High Precision Sine Wave Synthesis Using Taylor Series

Normally sine waves are generated on microcontrollers using a table lookup.

Lookup tables are perfect when wavelength happens to be an exact multiple of the sample rate, because you never actually need to know the values in between the table’s stored points.

But if you want to generate waveforms at any frequency without changing your […]

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