Featuring a 32-bit ARM processor running at 48MHz, and boasting 16K of ram, the Tau is far more powerful than your standard Arduino Uno, Micro, Nano, or Pro Mini!

And because it has the same processor and pinout, all libraries written for the Zero will work on the Tau without modification!

• Microcontroller: Atmel ATSAMD21E17 ARM Cortex M0+
• Clock speed: 48 MHz
• Operating voltage: 3.3V
• I/O pin limits: 3.3V, 7 mA
• Digital I/O pins: 12 w/ 10 PWM channels + 2 dedicated I2C pins w/ pullups
• Analog inputs: 3 12-bit ADC channels
• Analog outputs: 1 10-bit DAC
• Flash (program) memory: 128 KB
• RAM: 16 KB
• Voltage regulator: TLV702, 3.5V – 5.5V input / 3.3V, 300mA output
• Dimensions: 1.1 x 0.6″ (28mm x 15mm)

Programming is easy! Like most Arduinos, you simply plug the board into your PC using a micro USB cable, download the board files (see link below for details), select the board you want to program, and hit the upload button in the IDE when you're ready. The Tau ships with the Zero bootloader installed, and most of the time it will auto-reset when the USB serial port is opened by the IDE, but in the event that this fails, you can always hit the reset button on the board to force it to enter bootloader mode after your program finishes compiling.

Power + Status LEDs

Like most Arduinos, the Tau features some LEDs. A green LED indicated the board is powered, while a red LED connected to pin 26 to allows you to indicate the state of your program.

10-bit DAC

Say goodbye to the Tone() command forever! Turn your Tau into a virtuoso by connecting an amplifier to pin A0 an using the Audio library to play .WAV files with the built-in DAC!

Support

If you have any questions, want to see the schematics, or require any other information, you can find that all at RabidPrototypes.com!