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Affordable 32-bit Teensy Board for Compact, Low-Cost Embedded Projects

The Teensy LC 32-bit Microcontroller is the low-cost entry point to the Teensy family. It keeps the familiar small form factor while giving you a 32-bit processor, native USB, and useful analog, timer, and communication features.

It is a good fit for USB devices, small sensor projects, budget robotics, compact control boards, and students moving up from basic 8-bit boards into faster 32-bit development.

Important: Teensy LC is meant for cost-sensitive projects. If you need more speed, 5V-tolerant digital inputs, or more advanced buses, move up to Teensy 3.2 or newer models.

Why you'll love it

  • Lower entry cost: A practical way to get into the Teensy ecosystem
  • 32-bit processor: A step up from classic 8-bit USB boards
  • Native USB support: Useful for serial, MIDI, and HID projects
  • Small, familiar footprint: Easy to prototype on breadboards
  • Good for light embedded work: Strong enough for many compact control jobs

Comparison table

Product Best for Core / Speed Main edge
Teensy 2.0 ATmega32u4 USB Dev Board USB HID, MIDI, slim controllers 8-bit AVR / 16 MHz Native USB, classic small control builds
Teensy LC 32-bit Microcontroller Budget 32-bit builds and student projects 32-bit Cortex-M0+ / 48 MHz Low-cost 32-bit upgrade, compact and capable
Teensy 3.2 Balanced embedded, MIDI, display, sensor builds 32-bit Cortex-M4 / 72 MHz Well-balanced speed, 5V-tolerant digital inputs
Teensy 4.0 Fast DSP, displays, robotics, compact high-speed work 32-bit Cortex-M7 / 600 MHz Very high speed in a tiny footprint

What you can build

Use it for USB controllers, small robots, MIDI gear, sensor readers, low-cost embedded tools, and student projects where size and budget matter.

Starter bundles

Pair it with a breadboard, header pins, displays, sensors, and USB accessories. If you later need more power, the easiest next step is Teensy 3.2.

Recommended add-ons

Useful add-ons include small OLEDs, rotary encoders, buttons, sensors, and communication modules for compact and affordable control systems.

Technical specifications

Product Teensy LC 32-bit Microcontroller
Main MCU ARM Cortex-M0+
Clock Speed 48 MHz
Memory 62 KB Flash, 8 KB RAM
USB Native USB support
I/O Pins 27 total I/O pins
Analog 13 analog inputs, 12-bit analog input and output
Communication 3 Serial, 2 SPI, 2 I2C
Special Notes 7 timers and direct NeoPixel-friendly 5V output on pin 17 path
Logic Notes I/O pins are not 5V tolerant

Pinout & power notes

Teensy LC keeps the same compact style as Teensy 3.2, but it is aimed at lower-cost projects. It is still a 3.3V board, and its I/O pins are not 5V tolerant.

Official resources

Official Teensy LC page · Pinout reference · Schematic reference · Teensyduino setup

What’s in the box

1 × Teensy LC board

Frequently Asked Questions

Who should buy Teensy LC? It is best for users who want a low-cost 32-bit Teensy board for lighter projects.
Is it faster than an AVR Teensy 2.0? Yes. It uses a 32-bit Cortex-M0+ core at 48 MHz.
Can I use 5V signals with it? No. Its I/O pins are not 5V tolerant.
What is the next upgrade from LC? Teensy 3.2 is the natural next step if you want more speed and features.

Build with this board

// from learn.circuit.rocks

Notes from the bench

// from blog.circuit.rocks

Ask the community

// from forum.circuit.rocks