platform = teensy

Teensy is a complete USB-based microcontroller development system, in a very small footprint, capable of implementing many types of projects. All programming is done via the USB port. No special programmer is needed, only a standard USB cable and a PC or Macintosh with a USB port.

For more detailed information please visit vendor site.


Name Description
framework-arduinoteensy Arduino Wiring-based Framework
framework-mbed mbed Framework
tool-teensy Teensy Loader
toolchain-atmelavr avr-gcc
toolchain-gccarmnoneeabi gcc-arm-embedded


Linux Users:

Windows Users:

Teensy programming uses only Windows built-in HID drivers. When Teensy is programmed to act as a USB Serial device, Windows XP, Vista, 7 and 8 require this serial driver is needed to access the COM port your program uses. No special driver installation is necessary on Windows 10.


Name Description
Arduino Arduino Wiring-based Framework allows writing cross-platform software to control devices attached to a wide range of Arduino boards to create all kinds of creative coding, interactive objects, spaces or physical experiences.
mbed The mbed framework The mbed SDK has been designed to provide enough hardware abstraction to be intuitive and concise, yet powerful enough to build complex projects. It is built on the low-level ARM CMSIS APIs, allowing you to code down to the metal if needed. In addition to RTOS, USB and Networking libraries, a cookbook of hundreds of reusable peripheral and module libraries have been built on top of the SDK by the mbed Developer Community.




ID Name Platform Debug Microcontroller Frequency Flash RAM
teensy20 Teensy 2.0 Teensy   ATMEGA32U4 16 MHz 32 Kb 2.5 Kb
teensy20pp Teensy++ 2.0 Teensy   AT90USB1286 16 MHz 128 Kb 8 Kb
teensy30 Teensy 3.0 Teensy   MK20DX128 48 MHz 128 Kb 16 Kb
teensy31 Teensy 3.1 / 3.2 Teensy   MK20DX256 72 MHz 256 Kb 64 Kb
teensy35 Teensy 3.5 Teensy   MK64FX512 120 MHz 512 Kb 192 Kb
teensy36 Teensy 3.6 Teensy   MK66FX1M0 180 MHz 1024 Kb 256 Kb
teensylc Teensy LC Teensy   MKL26Z64 48 MHz 64 Kb 8 Kb

USB Features

If you want to use Teensy USB Features, you need to add special acros/define using build_flags:

  • -D USB_HID


platform = teensy
framework = arduino
board = teensy20
build_flags = -D USB_RAWHID

See Teensy USB Examples.


All project examples are located in PlatformIO repository Examples for Teensy platform.