It can be used for a lot of things, it is a very powerful board. IMO, the most interesting bit is the audio library developed by PJRC and its associated design tool. Answer from SuchABraniacAmour on reddit.com
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PJRC
pjrc.com › teensy › teensyLC.html
Teensy LC (Low Cost)
Teensy-LC (Low Cost) is a powerful 32 bit microcontroller board, with a rich set of hardware peripherals, at a very affordable price!
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Amazon
amazon.com › teensy-lc › s
Amazon.com: Teensy Lc
Beetle-A Small Microcontroller for Arduino Leonardo with USB HID for IoT & Wearable Projects (20mm×22mm, ATmega32u4, 3V Battery Support) · Teensy 4.0 iMXRT1062 Microcontroller Development Board w/Loose Pins (Standard Non-Lockable Version) · After viewing product detail pages, look here to ...
Discussions

A few pictures of the new Teensy LC
I've been selected to beta test a new board from PJRC, the Teensy LC. This Arduino-compatible board has an ARM chip that runs at 48 Mhz, comes with 64K Flash, 8K RAM, 27 IO pins and much more, for less than $12.00. More details here: http://www.pjrc.com/teensy/teensyLC.html Active discussions are here: https://forum.pjrc.com/threads/27689-Teensy-LC-Beta-Testing and https://forum.pjrc.com/threads/27624-Coming-Soon-Teensy-LC-(low-cost-Teensy) (disclaimer: I'm not affiliated with PJRC but have been a satisfied customer of their awesome products for years). More on reddit.com
🌐 r/arduino
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February 5, 2015
Seeking a Teensy 3.2 or Teensy LC
Where do you live? Country i mean. More on reddit.com
🌐 r/synthdiy
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December 14, 2023
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Reddit
reddit.com › r/embedded › what is a teensy and what kinds of things is it good for?
r/embedded on Reddit: What is a Teensy and what kinds of things is it good for?
March 7, 2025 -

I've been looking at getting into some basic embedded programming and I have been interested in something like a teensy 4.1 but as someone that is new to embedded programming, it looks potentially interesting and I'd like to understand what kinda of things could it be used for?

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NXP
community.nxp.com › t5 › NXP-Designs-Knowledge-Base › Teensy-3-x-and-Teensy-LC-USB-Development-Boards › ta-p › 1107468
Teensy 3.x and Teensy-LC USB Development Boards - NXP Community
November 17, 2015 - Description: Teensy 3.1 and Teensy-LC are a complete USB-based development tools featuring respectively the Kinetis 32-bit Cortex-M4 K20 and Cortex-M0+ KL26 devices running @ 72 and 48 MHz. Teensy 3.1 is equipped with 256KB flash and 64KB RAM. Teensy-LC board is equipped with 62KB flash and 8KB ...
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PJRC
pjrc.com › teensy › td_download.html
Teensyduino: Teensy support for Arduino IDE
Fix audio library on Teensy LC · Fix ST7735_t3 spitftbitmap example (KurtE) Support for Teensy 4.1 · USB Audio support for Teensy 4.0 · OctoWS2811 ported to Teensy 4.0 · WS2812Serial support for RGBW SK6812 LEDs · FreqMeasureMulti ported to Teensy 4.0 (KurtE) Dual & Triple USB Serial (Geert Uytterhoeven) Audio support for 4,6,8 channel I2S on Teensy 4.0 ·
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SparkFun Learn
learn.sparkfun.com › tutorials › getting-started-with-the-teensy › all
Getting Started with the Teensy - SparkFun Learn
The Teensy 4.0 is the same size and footprint as the Teensy 3.1/LC but even more powerful with its whopping 600MHz clock speed! The pin functionality is slightly different compared to the other versions. This runs off of the NXP iMXRT1062 IC, which is a 32-bit ARM Cortex-M7.
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Adafruit
adafruit.com › product › 2419
Teensy-LC Without Pins : Adafruit Industries, Unique & fun DIY electronics and kits
Teensy-LC delivers an impressive collection of capabilities to make modern electronic projects simpler. It features an ARM Cortex-M0+ processor at 48 MHz, 62K Flash, 8K RAM, 12 bit analog input & output, hardware Serial, SPI & I2C, USB, and ...
Find elsewhere
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PJRC
pjrc.com › teensy › techspecs.html
Teensy Technical Specs Comparision Table
Teensy-LC has RTC logic on-chip, but lacks the 32.786 kHz crystal oscillator & VBAT battery backup power pin. An internal oscillator can be used but the accuracy is poor. This table shows zero, to give you an honest summary of the hardware's real capability.
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Shawn Hymel
shawnhymel.com › 649 › learning-the-teensy-lc-manual-pwm
Learning the Teensy LC: Manual PWM - Shawn Hymel
March 27, 2016 - I’m in the process of learning how to use the Teensy LC, which is the newest Arduino-compatible module from PJRC. It is built around the MKL26Z64VFT4 (ARM Cortex-M0+), which can be had for around $2.20 for 100 (according to Digi-Key).
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Reddit
reddit.com › r/arduino › a few pictures of the new teensy lc
r/arduino on Reddit: A few pictures of the new Teensy LC
February 5, 2015 - I've been selected to beta test a new board from PJRC, the Teensy LC.
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Teensy Forum
forum.pjrc.com › home › forums
Teensy Forum
Custom Auto-BPM Continuous Sweep Looper (Teensy 4.1 + Audio Shield) Today at 3:00 AM · mikeloops · Questions and discussion on audio projects and the audio library · Threads · 3.5K · Messages · 33K · Threads · 3.5K · Messages · 33K · K · Can anyone see why my button doesnt work?
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PJRC
pjrc.com › store › teensylc.html
Teensy® LC
Teensy LC has a voltage regulator built in to the main microcontroller, which reduces the 5V VUSB / VIN power to 3.3V for use by the main processor and most other parts. Additional circuitry may be powered from the 3.3V pin. The recommended maximum for external 3.3V usage is 100mA.
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PJRC
pjrc.com › teensy › card6b_rev4_web.pdf pdf
Teensy LC Back Side
Teensy-LC pins · are not 5 volt · tolerant. Do · not apply more · than 3.3V. Vin Voltage · Output Only ·
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PJRC
pjrc.com › store › ic_mkl02.html
Bootloader Chip for DIY Teensy LC, 3.2, 3.5, 3.6 Projects
March 10, 2017 - By using this chip and a blank MKL26Z64VFT4 or MK20DX256VLH7 or MK64FX512VMD12 or MK66FX1M0VMD18, you can build your own Do-It-Yourself board that's compatible with Teensyduino and Teensy Loader. MK64FX512VLQ12 or MK66FX1M0VLQ18 (LQFP package) also work. The MKL02 or MKL04 will automatically detect which chip you've used and implement either Teensy LC, 3.2, 3.5 or 3.6.
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BerryBase
berrybase.de › en
Master - buy at BerryBase
With over 20,000 products, we offer one of the largest selections of Raspberry Pi accessories, microcontrollers and electronic components in German-speaking regions. We’re an official retailer for Raspberry Pi and Arduino – and proud to offer products from leading brands such as Adafruit, SparkFun, Pimoroni, Waveshare, Seeed Studio, Shelly, DFRobot, Elecrow, HiFiBerry, Makeblock, M5Stack, Yubico and Teensy .
Price   $$$
Address   Am Studio 20d, 12489, Berlin
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PJRC
pjrc.com › teensy
Teensy USB Development Board
The Teensy is a complete USB-based microcontroller development system, in a very small footprint, capable of implementing many types of projects.
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Spikenzielabs
spikenzielabs.com › Catalog › development › teensy › teensy-lc
Teensy LC [DEV-13305] - $17.95 : SpikenzieLabs, Great electronics kits
SpikenzieLabs Teensy LC [DEV-13305] - Description: The Teensy is a breadboard-friendly development board with loads of features in a, well, teensy package. The Teensy LC (Low Cost) is a 32 bit micro controller board that provides you with an uncomplicated option for getting started with the ...