SparkFun Teensy 3.5 Development Boards | Maker Minute

The Teensy 3.5 from SparkFun is a breadboard-friendly feature-packed development board designed by PJRC for easy programming of USB-MIDI and other HID projects. Its Kinetis K64F microcontroller offers multiple channels of direct memory access, several high-resolution ADCs, and an I2S digital audio interface. Additionally, all digital pins have interrupt capability and are 5 V tolerant. All these features, plus an onboard micro SD card port, are included on the 62.3 mm x 18.0 mm board. Compared to the Teensy 3.2, the Teensy 3.5 features an upgraded ARM® Cortex-MCU and more memory, RAM, EEPROM, and accessible pins.