Teensy 4.1 Development Board
Best legacy prototyping tool for hobbyists needing extensive I/O connectivity.
The Teensy++ 2.0 is a versatile USB development board designed for prototyping and embedded projects. It offers a complete microcontroller system powered solely by a USB cable, simplifying setup and operation. This board features 44 accessible I/O signal pins, providing extensive connectivity for various applications. While this model is discontinued, it remains a capable platform utilizing the AT90USB1286 microcontroller for robust performance. It's ideal for users needing significant I/O access and a straightforward USB interface for development.
$31.50
Owner Satisfaction
4.7
/ 5
Category Rank
15
/ 1541
#15 in Development Boards
Price vs Category Average
-64%
Below average
Microcontroller
901286
/ ATUSB (AVR Family)
Who it's for
- Engineers building high-speed audio or complex data processing projects
- Developers needing advanced networking and storage without extra hardware
- Programmers managing large firmware or memory-intensive applications
Who should skip it
- Makers relying on standard Arduino shields and generic libraries
- Hobbyists working with strict budget constraints
- Designers avoiding complex thermal or power management requirements
Performance breakdown
I/O Connectivity
Forty-four accessible pins offer exceptional flexibility for complex embedded hardware projects.
Prototyping Ease
Breadboard-friendly layout makes rapid circuit assembly straightforward for hobbyists and engineers.
Software Compatibility
Arduino IDE support ensures a familiar and accessible workflow for most developers.
Power Efficiency
USB-only power delivery simplifies setup but limits high-draw peripheral integration options.
Modern Relevance
Discontinued status and legacy architecture hinder integration with contemporary high-speed development standards.
Build Quality
Fully assembled, robust construction ensures reliable performance for long-term prototyping tasks.
Key Specs
Microcontroller
AT90USB1286 (AVR Family)
Total I/O Pins
44
USB Interface
Standard Mini-B
Onboard Flash Memory
128 MB
Pin Header Type
Solder Pads
Operating Systems Supported
PC, Macintosh
Package Contents
Teensy++ 2.0 Board, Pinout reference card
Power Source Options
USB
Features
- Complete USB-powered microcontroller system
- 44 accessible I/O signal pins
- Simple USB cable operation
- Fully assembled and tested
- Solder pads for all I/O signals
- Based on AT90USB1286 MCU
- Breadboard friendly design
- Arduino IDE compatible
What customers say
The Teensy 4.1 is overwhelmingly praised as a powerhouse microcontroller, primarily for its exceptional processing speed and integrated features. Users value the 600MHz core, which excels in demanding applications like DSP and complex robotics where standard boards fall short. Key differentiators include the built-in Ethernet and SD card slot, simplifying project integration by reducing external hardware needs. The robust Teensyduino software ecosystem ensures a smooth transition for experienced Arduino users, unlocking significant performance gains. While the initial cost is higher, the consensus is that the unparalleled speed, extensive memory, and professional features deliver outstanding value. It is considered a best-in-class platform for serious prototyping and embedded development.
Know before you buy
Yes, the board is fully compatible with the Arduino IDE, allowing you to use familiar programming workflows and libraries for your projects.
No, the Teensy++ 2.0 is designed to be powered entirely through its USB connection, making it a convenient option for portable or desk-based prototyping.
The board features solder pads for all 44 I/O pins. You can solder header pins directly to the board to make it breadboard-friendly, or solder wires directly to the pads for a more permanent installation.
This model is built around the AT90USB1286 microcontroller from the AVR family, which provides the necessary processing power and USB connectivity for your embedded applications.
The Teensy++ 2.0 is a capable platform for those comfortable with basic electronics and the Arduino environment. However, because it uses solder pads rather than pre-soldered headers, it requires basic soldering skills to get started.
Still have a question?
Ask Hayley anything about this product before you decide.