The tiny Arduino IDE ready, usb and mobile dev board
and ecosystem - cheap enough to leave in any project! Wi-fi, BLE, and
25+ shields!

Serial over USB debugging, USB programmable, 14 i/o, SPI,
I2C, UART, USB Device Emulation, Mobile Development Ready, Optional BT,
BLE, Mesh, and Wi-Fi.
The super small, dirt cheap,
always open source, Arduino compatible, USB (and Mobile and Wireless!)
development (and production) platform, and follow-up to the original
Digispark.

The
Digispark Pro Ecosystem is the cheapest, Arduino compatible development
platform for Mobile and Wireless hardware development.

- Compatible with Arduino IDE 1.5 (OSX/Win/Linux)
- Fully signed drivers and executable for easy installation
- USB programming, USB device emulation, USB-CDC virtual serial port emulation
- 16 Mhz AVR MCU - using a true 16Mhz precision crystal
- 16KB Flash Memory (14.5K+ after bootloader)
- Serial over USB debugging and communication!
- 14 i/o Pins (2 shared with USB)
- I2C, true SPI, UART, LIN, and USI
- ADC on 10 pins
- 3 PWM Channels (which can be assigned to a selection of pins)
- Power via USB, or External Source - 5v or 6-16v (automatic selection)
- On-board button that can be used as a reset, program, or user button - or can be disabled to use that pin as general i/o - without changing the bootloader
- On-board 500ma 5V regulator
- Power LED and Test/Status LED (on Pin 1)
- User accessible solder jumpers to disable LEDs, and other features for lower power consumption
- Two mounting holes.
- Breadboard compatible pin out/spacing (the three side header pins are only for legacy shield support).




Wi-Fi, Bluetooth, BLE, Mesh shields: The Digispark Pro is
backwards compatible with all existing Digispark shields - and it has
some shields exclusive for the Pro including: a Wi-Fi shield, a
Bluetooth Classic shield, a Bluetooth 4.0/Low Energy Shield, and a
nRF24L01+ low cost mesh networking shield. These low cost shields
make the Digispark Pro the cheapest way to jump into Internet of Things,
Mobile, and Wireless development!