Recent Blog Posts
Engelbart Chording Keyset
Douglas Engelbart gave “The Mother of All Demos” in 1968, introducing concepts such as the computer mouse, highlighting text, and hyperlinking documents, which profoundly impacted computing.
Less well-remembered, however, was Engelbart’s chording keyset, a five-button keyboard-like device that allows the input of characters when pressed in specific combinations. Russ Nelson wanted […]
Debugging with Visual Micro
Visual Micro, creators of a Visual Studio extension that enables Arduino development in the powerful Microsoft IDE, have created a serial debugging tool compatible with the Teensyduino platform.
The plug-in allows you to use breakpoints for step-by-step execution, monitor execution time between breakpoints, and set conditional breakpoints based on […]
Mini MIDI Controller
Nick Culbertson, aka Moby Pixel on YouTube, recently acquired a Teensy 4.0 and some tiny breadboards. Nick liked the aesthetics of the Teensy/tiny combo so much that it turned into a “world’s smallest MIDI controller” attempt!
Nick had been eyeing Teenage Engineering’s new EP-133 K.O. II sampler, but […]
Fancy PC Fan Controller
CryHam, creator of the Kacey and KC4 Keyboard Controllers, has created the “Fancy” PC fan controller based on the same code.
The device can regulate seven analog or PWM fans, with RPM detection and display, automated fan power adjustment based on DS18B20 temperature sensors, and an ST7735 […]
LMN-3 Open-Source DAW
What do you get when you cross a Raspberry Pi 4 with a Teensy 4.1 with a Teenage Engineering OP-1? Perhaps something like the LMN3 from Fundamental Frequency!
This self-described “open source DAW-in-a-box” leverages the Pi-based Tracktion Engine DAW tools with a Pimoroni HyperPixel 4.0 display, and a Teensy interfacing […]
Soundboard – Discord Sound Effects In Real Life
Mjd2dh and their friends were headed to a bachelor party, but how would they survive without their Discord soundboard?
Thanks to mjd2dh’s Teensy 4.1-based hardware soundboard, this was not a question that they ever had to answer, since the friends could now play their favorite sounds at will […]
Software Defined Radio Transceiver
Econjack (ham radio call sign W8TEE) and Al Peter (AC8GY) have created the T41-EP Software Defined Transceiver (SDT) based on Frank Dziock (DD4WH)’s Convolution SDR code.
The T41-EP is an HF 7-band Single Sideband (SSB) voice and continuous wave (CW) Morse code transmitter, building on the receiver […]
BitByte Handheld Console
Dawson Pate has created BitByte, a Teensy 4.1-based handheld console with an easy-to-learn scripting language for creating your own games.
The Micro VM language allows games to be edited as simple text files on a microSD card, which is automatically mounted as a mass storage device when connected via USB.
The handheld […]
MIDI Foot Pedal Controller
ChrisT had an idea for a MIDI pedal board that could send MIDI messages to his laptop while playing guitar, to trigger samples, change effects, and play synth pad chords.
After prototyping in software using HTML and JavaScript, ChrisT built a prototype using plastic multi-purpose compartment organizers that […]
Old Phone Interface to MS Teams and Zoom Calls
MikeSound found two old phones from the 50s and 70s in his parents’ basement. Still in good working order, and visually striking compared to today’s drab black slabs, Mike decided to give them new lives as Microsoft Teams/Zoom-compatible headsets using Teensy 4.0.
In addition to headset functionality via the […]
Hybrid MIDI Grand Piano
A hybrid piano translates traditional acoustic piano action into MIDI (unlike a purely digital MIDI keyboard), giving pianists the best of both worlds.
Greg Zweigle had long wanted to build his own, and has gotten all 88 keys working, using two Teensy 4.1s and a Kawai grand piano action.
Greg […]
Custom Elite Joystick
Benkster had a dream of creating the perfect custom joystick for Elite Dangerous.
The dream was a lengthy one, spanning two years and numerous iterations. The current version is a leviathan 3d-printed affair with two 3-axis joysticks, one 2-axis joystick, a heap of buttons, and a tiny OLED display to […]
Eurorack Synth Prototype
Lucian_dusk has created a self-described “functional Teensy 4.1-based breakout board for Eurorack modular synth(s).”
Based around the versatile Cirrus Logic CS42448 audio codec, the board features CV input and multichannel audio I/O, with an auxiliary PCB multiplexing five channels into one analog pin. More detail, including schematics, can be found […]
FloydTheRobot’s Dual Arm Controller
Madgrizzle’s FloydTheRobot is an ongoing DIY ‘bot project with ever-evolving capabilities, the latest being the addition of two quite versatile-looking Teensy 4.1-powered arms.
The controller has four TI DRV8874 H-bridge motor drivers and four ports for Hiwonder HX-35HM Serial Bus Servos. Two PWM servos control pan/tilt of the robot’s camera, and integrated fan management […]
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