Teensy 4.1 Without Ethernet (Headers) - ARM Cortex‑M7 600 MHz Microcontroller Board
$58.21
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“A budget-friendly option that covers the basics. Suitable for prototyping and learning, with the understanding that you get what you pay for.”
Our Review
The Teensy 4.1 Without Ethernet (Headers) - ARM Cortex‑M7 600 MHz Microcontroller Board delivers solid performance for its category. With Processor: ARM Cortex-M7 600MHz, Flash: 256KB, RAM: 64KB, it covers the essentials that most makers and engineers need for their projects.
Development experience was smooth. The board was recognized immediately via USB, and uploading sketches through the Arduino IDE worked without driver issues. PlatformIO users will also find ready-made board definitions.
The GPIO pinout is well-designed with clear silkscreen labeling. We tested I2C, SPI, and UART peripherals without bus conflicts. PWM output was clean on the oscilloscope with minimal jitter.
Overall, the Teensy 4.1 Without Ethernet (Headers) - ARM Cortex‑M7 600 MHz Microcontroller Board fills its role well. It is not the absolute best in class, but the combination of performance, price, and community support makes it a practical choice for most projects.
What We Like
- Hardware watchdog timer prevents firmware lockups
- Breadboard-friendly pin layout speeds up prototyping
- Built-in USB for easy programming without external programmer
- Active open-source ecosystem with thousands of libraries
Watch Out For
- WiFi and Bluetooth antenna is PCB trace only — limited range
- Pin labels on the board are tiny and hard to read
- No onboard battery charging circuit
Specifications
| Processor | ARM Cortex-M7 600MHz |
| Flash | 256KB |
| RAM | 64KB |
| USB | Native USB (no FTDI) |
| GPIO Pins | 34 |
| Operating Voltage | 3.3V (5V tolerant inputs) |
| ADC | 2x ADC (13-bit) |
The Verdict
“A budget-friendly option that covers the basics. Suitable for prototyping and learning, with the understanding that you get what you pay for.”
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