Teensy 4.1
A high-performance ARM Cortex-M7 development board designed for demanding embedded applications.
Best for
Advanced makers needing 600 MHz processing and extensive peripheral support.
Skip if
Beginners or projects requiring 5V logic tolerance.
What is Teensy 4.1?
The Teensy 4.1 is a powerful microcontroller board featuring an NXP i.MX RT1062 processor running at 600 MHz, providing exceptional computing power in a compact form factor. It includes expanded memory options with an onboard MicroSD card socket and room for optional Flash and PSRAM chips. Building on the success of its predecessor, the 4.1 retains the familiar breadboard-friendly layout while adding significantly more I/O pins, an Ethernet PHY, and a USB host port, making it ideal for advanced audio processing, robotics, and custom hardware controllers.
SpecificationsAI-estimated
Key Features of Teensy 4.1
Use Cases for Teensy 4.1
Custom MIDI Controllers
Build sophisticated musical instruments and MIDI interfaces utilizing the native USB host port and fast processing speed.
Data Logging Systems
Record high-frequency sensor data directly to a MicroSD card using the integrated card socket.
Network-Connected IoT
Deploy smart home sensors and web servers using the onboard Ethernet PHY and TCP/IP stack.
Advanced Robotics
Control multiple high-speed motors, servos, and sensors simultaneously with abundant PWM and communication pins.
Pros & Cons of Teensy 4.1
Pros
- Incredible processing speed and performance for a microcontroller
- Ample memory and expansion options via MicroSD and memory pads
- Extensive peripheral support including Ethernet and USB host
- Familiar and robust Arduino/Teensyduino software ecosystem
Cons
- Operates at 3.3V logic and is not 5V tolerant
- Larger physical size compared to the Teensy 4.0
- Steeper learning curve for advanced networking and peripheral configuration
Frequently Asked Questions
Is the Teensy 4.1 compatible with Arduino libraries?
Yes, it works with the Arduino IDE using the Teensyduino add-on, which adapts most standard Arduino libraries.
Does the Teensy 4.1 require external power?
It can be powered via the USB port or through the VIN pin using an external 5V power supply.
Are the I/O pins 5V tolerant?
No, all digital and analog I/O pins on the Teensy 4.1 operate at 3.3V and are strictly not 5V tolerant.
How do I use the Ethernet feature?
You can solder an appropriate magnetics jack to the dedicated Ethernet pins on the board to enable wired networking.
Pricing Overview
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