tiny, low power, ARM-based board

• 35mm x 69mm
• breadboard friendly pinout

hardware:

• STM32F411
  • 96 MHz Cortex M4F
  • 100 uA / MHz
  • 10 analog inputs
  • 10 digital inputs
  • 10 digital outputs
  • 8 PWM outputs
  • i2c, spi, uart, usb
  • real-time-clock
  • board compat with most 48pin STM32s (eg. F103, L152, L072)
• micro SD card
• audio speaker
• OLED display
• AD5062 programmable battery charger
  • configurable charge current
  • configurable USB current
  • configurable charging parameters
• MAX17048 battery fuel gauge

software:

• can (will eventually) run open-source:
  • python
  • javascript
  • mbed
  • .NET
  • arduino
• comes with battery charger + data-logger
• write your own code

other:

• RoHS, lead-free
• fat-free, sugar-free, gluten-free