Teensy 3.6 as standalone mediator between USB MIDI and Eurorack

Sebastian writes: USB MIDI controllers (such as Launchpad Mini Mk II for example) are common and often quite low in cost. To interface such a controller with a Eurorack synth system, often a host computer and a MIDI to CV interface might be used. The host computer would take USB MIDI data from the MIDI […]

A touch numeric keyboard for Arduino or Teensy

Giovanni Carrera blogged about his touch numeric keyboard for Arduino or Teensy: Very often, for our programs, we need a system to set parameters, usually of a numerical type. A 4×4 keyboard requires some space and then we also need a display. Here is the idea of using a touchscreen display to do both. I […]

Simulating 3-phase AC for energy monitor testing

Tisham Dhar blogged about his 3-phase synthesizer: Finding 3-phase is difficult, convincing the owner of the said supply to test some home made hardware is even more so. After building a 3-phase energy monitor my testing options for it appeared very limited. So I set about making my own low-cost 3-phase energy monitor calibration system. See […]

Modifying the Teensy 3.5 and 3.6 for ARM SWD debugging

Erich Styger @ mcuoneclipse.com writes: Looking for a small, inexpensive ($25-30) ARM development board (say 120-180 MHz ARM Cortex-M4 with FPU, 512kB-1MB of FLASH and 256 KByte of RAM? Then have a look at the Teensy 3.5 and Teensy 3.6 by PJRC/Paul Stoffregen The only problem? it is not possible to debug it :-(. At […]

Teensy GPS Logger redesigned in smaller version

An update on J3tstream’s Teensy GPS logger project we covered previously: The last and final design, the Teensy and GPS is directly powered from 3.7v li-on batt.  Power button in red, black button to enable charging in case of using +5v AC adapter.   SDCard socket is mounted at the back of pcb. Project info at […]

Teensy MIDI USB foot controller for controlling Mobius Looper

Thrifleganger wrote this instructable detailing his Teensy MIDI USB foot controller for controlling Mobius Looper: The concept is quite simple and straightforward. You press a button, the arduino interprets the signal arriving from the button as a midi “control change” signal (typically represented as MIDI CC), and this signal can be mapped to respond to any of […]

SmartMatrix Shield Pro

EmbeddedCreations writes: I’ve been working on a new version of the SmartMatrix Shield, not meant to replace it, but to be an option for those that want to maximize the capabilities of the Teensy, while connecting to a matrix display. Let’s call it the SmartMatrix Shield Pro. This board will have the advantage of pinout/functionality, […]

Using a Wii Nunchuk as an earthquake sensor

Here is an open source earthquake sensor based on the Wii Nunchuk. A Teensy is used to read the I2C accelerometer output: This article explores the suitability of a Wii nunchuk based USB accelerometer as an earthquake sensor for the Quake-Catcher Network (QCN) project. It examines the nunchuk over several metrics: precision and range, frequency response, […]

Defcon 19: Hacking over power lines

Dave Kennedy (ReL1K) presented this talk at last summer’s Defcon 19 conference demonstrating the relative insecurity of home automation devices, such as X10, HomePlug and ZWave modules, which communicate either locally over power lines or via RF in the ISM bands. The presentation covers usage of the Teensy Arduino-based device to emulate a keyboard when […]

Irongeek’s Teensy based SD keylogger

Adrian Crenshaw (“Irongeek”) has released the project details and code for his latest hardware keylogger. If you have a Teensy board and ever thought about experimenting with keyloggers you’ll find everything you need in Adrian’s project description. You simple connect the Teensy between a female PS/2 connector and an SD card adapter and grab the […]

SSD1308 OLED interface AVR library for Arduino/Teensy

Our forum regular Marcus posted a SSD1308 OLED interface library and pin connections to get you started with your Arduino/Teensy OLED projects. The display is a 0.96” 128 x 64 dot matrix that can be interfaced though both I2C or SPI interfaces, the library Marcus provides is SPI only and should allow you to get […]

Arduino IDE hack speeds up code compile

Paul Stoffregen over at PJRC sent us a link to this video highlighting how to modify the Arduino IDE by editing the boards.txt file to allow the compiler to use precompiled files. This helps to speed up the overall compile and upload process. A cool enhancement originally developed for the Teensyduino board. Paul submitted this […]