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Description: The Teensy is a breadboard-friendly development board with loads of features in a, well, teensy package. Each Teensy 3.6 comes pre-flashed with a bootloader so you can program it using the onboard USB connection; no external programmer needed! You can program for the Teensy in your favorite program editor using C or you can install the Teensyduino add-on for the Arduino IDE and write Arduino sketches for it!

The processor on the Teensy also has access to the USB and can emulate any kind of USB device you need it to be, making it great for USB-MIDI and other HID projects. The 32-bit, 180MHz processor brings a few other features to the table as well, such as multiple channels of Direct Memory Access, several high-resolution ADCs and even an I2S digital audio interface! There are also four separate interval timers plus a delay timer! Oh yeah, and all digital pins have interrupt capability and are 3.3V tolerant.

All of this functionality is jammed into a 62.3mm x 18.0mm board with all solder points on a 0.1" grid so you can slap it on a breadboard and get to work! The Teensy 3.6 (as well as its sibling, the Teensy 3.5) is larger, faster and capable of more complex projects, especially with its onboard micro SD card port. An upgraded ARM Cortex MCU (180MHz from 72MHz), more memory (1M from 256K), as well as more RAM, EEPROM and accessible pins make up the key new features of this “teensy” board. The Teensy 3.6 is slightly scaled up from the Teensy 3.5 but is offered at a higher price point, comparatively.

Note: This does not come with a USB cable; please check below for an appropriate one.

Dimensions: 62.3mm x 18.0mm x 4.2mm (2.5in x 0.7in x 0.2in)


  • 180 MHz ARM Cortex-M4 with Floating Point Unit
  • 1M Flash, 256K RAM, 4K EEPROM
  • Microcontroller Chip MK66FX1M0VMD18
  • USB High Speed (480Mbit/sec) Port
  • 2 CAN Bus Ports
  • 32 General Purpose DMA Channels
  • 22 PWM Outputs
  • 4 I2C Ports
  • 11 Touch-Sensing Inputs
  • 62 I/O Pins (42 breadboard friendly)
  • 25 Analog Inputs to 2 ADCs with 13-bit resolution
  • 2 Analog Outputs (DACs) with 12-bit resolution
  • USB Full Speed (12Mbit/sec) Port
  • Ethernet mac, capable of full 100Mbit/sec speed
  • Native (4-bit SDIO) micro SD card port
  • I2S Audio Port, 4-Channel Digital Audio Input & Output
  • 14 Hardware Timers
  • Cryptographic Acceleration Unit
  • Random Number Generator
  • CRC Computation Unit
  • 6 Serial Ports (2 with FIFO and Fast Baud Rates)
  • 3 SPI Ports (1 with FIFO)
  • Real-Time Clock


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Customer Comments

  • Does anyone know if the Sparkfun LSM9DS1 Library is compatible with this board?

  • With the addition of the FPU, I wish I was smart enough to implement a Kalman filter for IMU sensor fusion. This teensy little fella would fly nicely. Someday maybe.

  • The video mentions using the ‘octows2812’ library. From what I’ve been able to find on PJRC website/forums/rest of the interent, the octows2811 library currently doesn’t explicitly support the teensy 3.5/6 but I’d love to be proven wrong. I’ve been waiting with bated breath for the octo library to come to the newest teensy’s. Any chance Nick (or anyone) could post up a link to the library used in the video and maybe even the code for running the animation shown in the video?

    • for both 2811 and 2812:



      Should work with all T 3.x stuff.

  • I’ve just noticed that the Teensy 3.x series finally includes access to a built-in RTCC. (Adding a battery and 32768Hz crystal isn’t a big deal, IM[NS]HO.)

    Only one problem: Where does the crystal go on the 3.5 and 3.6? (It’s pretty clear on the 3.2 pin assignment chart, but NOT on the 3.5 or 3.6.)

    • On the back board diagram the ‘interior’ pins (next to the microsd slot but not along the two long flanks) are shown and one is labelled ‘VBatt’ with the subheading that it’s for a 3V coin cell for the RTC. The board itself seems to also have a small ‘VB’ label in the silkscreen but the diagram resolutions isn’t stellar.

      EDIT: lost track of brain before posting, this forum post over at PJRC also clarifies crystal is built in, and you can make out what looks to be 2 crystals by the reset button. “RTC crystal: The crystal for the RTC is part of the Teensy 3.5/3.6, while on the Teensy 3.2 you have to solder an external crystal.”

      • Excellent! Thanks! While preparing a post over on Adafruit, I noticed that there were what might be a 32.768kHz SMD crystal over between the reset button and pin 25/pin 26, but the resolution of the pics available didn’t allow reading the markings (and there’s no schematic available, at least yet). The website isn’t yet listing info about the 3.5/3.6, so was no help either.

        At $25 a pop, the 3.5 may become my “go-to” board, especially for data logging!

  • I believe the description should read “… digital pins have interrupt capability and are 5V tolerant.” Rather than 3.3V tolerant.

    • From pjrc website: Version 3.6 features a 32 bit 180 MHz ARM Cortex-M4 processor with floating point unit. All digital and analog pins are 3.3 volts. Do not apply more than 3.3V to any signal pin.

Customer Reviews

4.7 out of 5

Based on 3 ratings:

Currently viewing all customer reviews.

Board is great, documentation almost great

Let me highlight the great things first. The board is an almost drop in replacement for the Arduino. This board also extends the PWM capabilities, leaving Arduinos in the dust, not to mention having more ports than any board of its size that I have seen. I was able to port some arduino sensor code to this board with minimal code changes. Since my first thoughts on this board, more documentation is slowly coming out in relation to my uses, so 4 stars seems to fit.

As a side note, I should also mention it was a bit awkward trying to solder on those headers myself… not a lot of room next to the main processor. I guess next time I should wait until the pre-soldered version is in stock, or if you are new to soldering.

One more thing: are there going to be any -boards for the 3.6? The other add-on boards seem to work with the smaller Teensy boards only. Thanks for taking the time to read my rating.

The pin layout on the first half of the 3.6 (and 3.5) is the same as the earlier, smaller Teensy boards, so many add-on boards should remain compatible. I just tested the Teensy Audio Board with the 3.6, and it worked flawlessly.

Teensy 3.6

I have been using the Teensy 3.1 for quite some time and really like it. I saw the Teensy 3.6 specs and wanted to get one to play around with. I only just received the Teensy 3.6 so I haven’t pushed it very hard yet but the board works as advertised and is awesome! These boards are developed by Paul Stoffregen at PJRC; is his web site where you can find all kinds of information about the Teensy line of products. Thanks Paul! And thanks SparkFun, as always ordering and delivery were outstanding! You guys help keep my spark interests alive!

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Vox Imperium: Stormtrooper Voice Changer

October 25, 2016

Add some flair to your Imperial uniform by changing your voice using a Teensy 3.2 and Prop Shield.