Features include:

  • Arduino Compatible
  • ATMEGA32U4 at 8MHz
  • On-board Lithium Ion Battery management
  • Automatic switching from external 5V power to battery
  • Any 5V (500mA) source may be used to power and charge the unit
  • ESP-8266 WiFi Module (ESP-01) with updated firmware (9600bps default)
  • Uses a through-hole Mini-USB connector (I got tired of pulling the Micro-USB off of the WIOT prototype and other red Arduino-compatible boards that I won't call out by name)