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High-Speed Teensy 3.x Board for USB Host, Audio, and Large Embedded Projects

The Teensy 3.6 without headers is one of the most capable boards in the Teensy 3.x line. It gives you more speed, more memory, more buses, and more I/O for bigger robotics, audio, USB host, and data-heavy projects.

With its 180 MHz ARM Cortex-M4, larger RAM and Flash, USB host support, and native SD features, it is a strong fit when a compact board still needs serious embedded power.

Important: This version ships without pre-soldered headers. That gives you more freedom for low-profile builds, custom pin layouts, or direct board-to-board mounting.

Why you'll love it

  • Fast 180 MHz core: Good for audio, motion, and high-speed control tasks
  • More memory than smaller Teensy 3.x boards: Helps with larger sketches and buffers
  • USB host support: Useful for keyboards, MIDI gear, and USB accessories
  • Native SD features: Good for logging, playback, and larger datasets
  • Lots of pins: Better for wide sensor or actuator builds

Comparison table

Product Best for Core / Speed Main edge
Teensy 3.5 without headers More I/O with easier 5V digital interfacing 32-bit Cortex-M4 / 120 MHz More I/O and 5V-tolerant digital inputs
Teensy 3.6 without headers Bigger legacy builds, audio, USB host 32-bit Cortex-M4 / 180 MHz Legacy high-end 3.x board with USB host
Teensy 4.0 Fast DSP, displays, robotics, compact high-speed work 32-bit Cortex-M7 / 600 MHz Very high speed in a tiny footprint
Teensy 4.1 Development Board Large systems, Ethernet, SD, memory expansion 32-bit Cortex-M7 / 600 MHz Most I/O, SD, Ethernet, memory expansion

What you can build

Choose it for advanced robots, polyphonic or effect-heavy audio devices, USB host tools, large LED and display systems, and projects that need more buses and RAM than smaller boards.

Starter bundles

Pair it with the Audio Adapter Board for Teensy 3.x, a microSD setup, sensors, and header pins or sockets that match your build style.

Recommended add-ons

Useful add-ons include audio hardware, CAN transceivers, displays, microSD storage, and sensor modules that benefit from multiple I2C, SPI, and serial ports.

Technical specifications

Product Teensy 3.6 without headers
Main MCU ARM Cortex-M4
Clock Speed 180 MHz
Memory 1 MB Flash, 256 KB RAM, 4 KB EEPROM
USB USB device 12 Mbit/sec, USB host 480 Mbit/sec
I/O Pins 64 digital I/O, 22 PWM
Analog 25 analog inputs, 2 analog outputs, 11 touch inputs
Communication 6 Serial, 3 SPI, 4 I2C, 2 CAN
Storage Native SDIO SD card support
Logic Notes 3.3V-only signals; not 5V tolerant

Pinout & power notes

Teensy 3.6 is a 3.3V-only board. Do not drive its digital pins above 3.3V. It offers many extra signals beyond the breadboard edge pins, which is useful for dense custom builds.

Official resources

Official technical specs · Pinout reference · Schematic reference · Teensyduino setup

What’s in the box

1 × Teensy 3.6 board without headers

Frequently Asked Questions

Why choose 3.6 instead of 3.5? Teensy 3.6 is faster, has more memory, and adds stronger USB host capability.
Is this board 5V tolerant? No. Its digital pins are not 5V tolerant.
Can I use it for audio work? Yes. It works well with the PJRC audio system and is strong for DSP-style builds.
Are headers included? No. This version is sold without headers.

Build with this board

// from learn.circuit.rocks

Notes from the bench

// from blog.circuit.rocks

Ask the community

// from forum.circuit.rocks