* It is engineered as an embedded system that let you develop more projects with the help of Bluetooth technology and different mobile devices. * The RFduino board is powerful enough to run almost any Arduino project and small enough to have full control over 7 GPIO and use it for I2C, SPI, UART, Analog, and more other serial ports. Below you can find a list with all the features included in the small wireless communication board called RFduino. - Size: 15 x 15 x 3.5 mm - CPU: 16MHz ARM Cortex-M0 - Flash memory: 128 kb - RAM: 8kb - Low Supply Voltage: 1.9V - Typical Supply Voltage: 3V - High Supply Voltage: 3.6 V - Transmit Current: 18mA, 4uA ULP - Receive Current: 18mA, 4uA ULP - GPIO: 7

* Input voltage: 4.5 to 12 VDC * internal voltage: 3.3 VDC * Consumption MCU on: 40 mA * MCU consumption stand-by: 23 uA * Button Battery: CR1225 * Dimensions: 70 x 52 mm * Weight: 20,7 gr * Connectors: 22-pin socket for expansion modules, dual row socket for expansion modules, 8-pin JTAG connector, micro USB * microcontroller: STM core 32-bit ARM Cortex-M3 * Clock: 72 MHz * Flash memory MCU: 1MB * RAM MCU: 96 KB * SD card: MicroSD slot for up to 2GB * Wifi: 802.11 b / g (ceramic or external antenna) * Ethernet: 100 MB * Interfaes series: 3 UART, 2 I2C 1 SPI * Input / Output: Up to 6 analogs, up to 20 digital * Available modules: ZigBee, Wi-Fi, IEEE802.15.4, GPRS, NFC / RFID, GPS, RS485, Industrial Sensors * protocols: 70 x 52 mm * OS: FreeRTOS * API: TST software library * Operating temperature: -20 ° C / + 70 ° C * Storage Temperature: -40 ° C / + 85 ° C * Certifications: CE, RoHS