Teensy 3.5 with Soldered Headers

The Teensy 3.5 is very compact and many times more powerful than most standard Arduino's.
This Teensy is also suitable for use with Arduino with Teensyduino.
Would you rather use the hex file directly? Then use the Teensy Loader Application.

Specifications:

• 120MHz NXP/Freescale  MK64FX512VMD12  Cortex-M4F microcontroller
• 512kB Flash Memory
• 192kB RAM Memory
• 4kB EEPROM
• 62 Digital pins (3.3V, but 5V tolerant)
• 25 Analog input pins (of which 2 have 13-bit resolution)
• 2 Analog output with 12-bit resolution
• 14 Timers (of which 1 can be an RTC, 20 pins can be PWM pins)
• 1x (Micro-)USB connection
• 6x Serial (RX/TX) connection
• 3x SPI connection
• 3x I2C connection
• 1x CAN Bus connection
• 1x I2S Audio connection
• 1x MicroSD connection (via 4-bit SDIO)
• See the images for all connections and notes about certain pins.

For more information see: Teensy 3.5 & 3.6