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Brandon Foltz built TMO, a handheld game console built from scratch.
TMO was partly inspired by BMO from Adventure Time. It uses a Teensy 2.0 and features 16×16 LED display and simple input controls.
The operating system for TMO that provides the interface and game development API can be found on GitHub.
Frank (forum user DD4WH) made a microSoundRecorder to log both audio and environmental data to an SD card.
The recorder uses a BME280 sensor to log temperature, air pressure and humidity, and a BH1750 sensor to log light intensity. It also includes a digital microphone to capture audio.
The project made use of Walter’s (forum user WMXZ) environmental sound recorder library. Additional information on how to connect the sensors to the Teensy can be found on this GitHub page.
Tim Cowden (Cowlander on the forum) has been using a Teensy 3.5 to build a controller for a cyclotron particle accelerator.
As part operations staff at the Cyclotron Institute at at Texas A&M University, Tim is responsible for the control systems. He’s been working on replacing the Rabbit 3200 embedded controller they’ve been using with a Teensy 3.5. The Teensy 3.5 has proven to be a good fit when combined with a Wiz850 network module.
Benjamin Poilve (BenIP on the forum) has made a neat little hand-held instrument, Synthetica.
Ben came up with an idea to make a musical instrument to play around with chord progressions as a way to experiment with music composition. He came up with Synthetica, a handheld synthesizer. Synthetica is played using capacitive touch with one hand selecting a chord and the other hand selecting a note. With some help from the forum he got his project up and running.
Some of the features include pots to control:
Code for the project has been published on GitHub.
Nick Demopoulos built an amazing guitar-synth MIDI controller, Smomid.
Smomid (String Modeling Midi Device) is a synth instrument in the shape of a guitar. It’s incredibly versatile with a long list of features and functionality. Thanks to some guidance offered on the forum, Nick was able to upgrade the micro controllers in the second version to a pair of Teensy 3.6s.
You can find recordings of Nick playing Smomid on his website.
James Burton has upgraded the micro controller on his impressive openDog robot with a Teensy 3.6.
James has been building open Dog, an open source robot inspired by the Boston Dynamics dog robots. He recently upgraded the micro controller to the Teensy 3.6, replacing 3 Arduino MEGAs with it. The Teensy 3.6 provides 6 serial ports, needed for the motor controllers, and allows the code to run in one place, avoiding multiple serial hops.
He’s published a multi part video series on the building of openDog that is well worth checking out.
The project is fully open source with the code published on GitHub.
Mingjing Huang has developed the LEDoctopus, an expansion board to make developing your LED projects easier.
The LEDoctopus I/O expansion board makes it easy to get started on LED projects – no soldering required. All you need is to plug in your Teensy, with pins; up to 8 WS281x LED strips using standard terminal blocks; and 5V power using a standard barrel connector. You can also use USB power through the Teensy. Or if you have a high power application, the board includes a place to add a connector rated up to 45A. Once you have everything plugged in, you’re ready to start using the OCTOWS2811 library to control your LEDs
This board is available on Tindie.
Clovis Fritzen put together a data logger to collect information from his experiments.
The goal of the project was to design an easy to use data logging device that features both analog and digital readings. The project started with a basic sketch to ready data from an analog input and store it to an SD card. Future ideas for the project include adding a small LCD screen and making the logging internal configurable.
Code for the project is available on GitHub.
Loftur Jónasson has updated his Power and SWR Meter with a more powerful processor and better display.
The first revision of the meter used a Teensy ++ and a know to navigate menus on the display. In this updated version he upgraded to a Teensy 3.2 and increased the sampling from 200 to 1,000 times per second. The display has also been upgraded to a TFT touch display not only more information being displayed, but for easier navigation as well.
Build details and source code is available on this project page.
Nick Engmann gave his Alexa some personality by adding an ADC-controlled eyeball to it.
Nick picked up some Amazon Echo-Dots to hack during a sale. He decided whip up a 3D printed enclosure and add some personality with an animated eye using a Teensy 3.2 and a TFT LCD display. The project was partially inspired by Adafruit’s Uncanny-Eyes tutorial.
Code for the project is published on GitHub.
