Teensy's Next Chapter

Paul Stoffregen sits down with us to speak on the history of Teensy!

For nearly two decades, the Teensy has been at the heart of some of the world's most impressive projects. From massive LED installations at Burning Man to critical NASA research programs this small development platform is known for its incredible performance and small footprint. Paul Stoffregen and Robin Coon, the developers and creators at PJRC, have built a legacy of trust and reliability in the maker and professional communities alike.

In 2025, that PJRC's legacy entered a new era with SparkFun becoming the sole manufacturing and sales partner for Teensy. This partnership ensures that the innovation PJRC started will continue with SparkFun’s commitment to quality and accessibility.

In our latest video, "The Story of Teensy: From PJRC to SparkFun Partnership," we sit down with Paul Stoffregen to discuss the history of Teensy and the future of the platform under the SparkFun umbrella. You’ll also get an exclusive look at our manufacturing process, where every single board undergoes rigorous testing including:

  • Power Testing: Every Teensy is powered up and down multiple times to ensure the power rails are functioning as expected.
  • JTAG Boundary Scans: We verify every single pin on the processor and board is correctly connected and ready for use.
  • Firmware Programming: Each Teensy is programmed and verified with the latest firmware before it leaves our facility.

A Look at the Future

The Teensy 4.0 and 4.1 boards continue to push the boundaries of what’s possible with a real-time microcontroller. With a Cortex-M7 processor running at 600 MHz, the Teensy 4.1 offers 10/100 Mbit Ethernet, 8MB of flash memory, and 55 I/O pins, making it a powerhouse for complex projects. Whether you're building a MIDI controller or a high-performance data acquisition system, Teensy stands alone as the tool of choice for those who need speed and power in a compact package.

Teensy 4.0

DEV-15583
$23.80

Teensy 4.1

DEV-16771
$31.50

Teensy 4.1 without Ethernet, Lockable

DEV-28370
$29.60

We are thrilled to be part of the Teensy story and can’t wait to see what you build with it next. Check out the video below to learn more about this exciting partnership!

Ready to start your next project? Explore the full Teensy line on the SparkFun Teensy information page today!