Seeeduino Stalker v3

Seeeduino Stalker v3 is an Arduino compatible main board which has various functions. It's an X-Bee carrier board while using with X-Bee modules, such as GPS Bee, Bluetooth Bee and Wifi Bee, etc. It's a charger for Lipo while plugging a solar panel onto the board. Also, you can get time from the inside RTC chip, and all data can be easily stored through the SD card. In a word, Seeeduino Stalker v3 has an independent ecological system and it's good for applications in outdoor environment. 

Feature:

• Arduino compatible, based on Seeeduino
• Onboard microcontroller: ATmega328P
• Onboard Real Time Clock chip with a supercap as a backup power source
• Serial interface with DTR for auto reset during programming when operating in standalone mode. (For programming, UartSBee must be bought separately)
• MicroSD card socket
• I2C Pin header (operation voltage is selectable: 5.0V or 3.3V)
• User defined LED
• Bee series socket - 2*10 pin 2.0mm pitch (which will mate with - one at a time - any of the wireless modules: XBee, BluetoothBee, GPSBee or RFBee.)
• Please note that The IO Ports work in 0~3.3v level only.