$34 BLEduino Bluetooth 4.0 Low Energy Arduino-Compatible Board

After RFDuino, here’s another tiny low cost Bluetooth 4.0 SMART development board compatible with Arduino. BLEduino board is the merger of Arduino Leonardo and Bluetooth module, features Atmel ATmega32u4 MCU, Nordic Semi nRF8001 for BLE, and includes an on-board USB programming interface. Key features of BLEduino board: MCU – Atmel ATmega32u4 @ 16 MHz with 32 KB flash, 2.5 KB SRAM, and 1 KB EEPROM Power Supply – 5V.  Onboard 5V & 3.3V regulators I/O: 21x GPIO Pins 6x PWM Channels 12x Analog Input Channels Serial Communication – UART, SPI, I2C LED – RX/TX for serial communication, LED for Bluetooth connectivity Bluetooth – Version 4.0 with Low Energy sypport via Nordic Semi nRF8001. Expected range: at least 24 meters Dimensions – Around 22.8 x 43.2 mm Kytelab, the company behind BLEduino, also provides “Shield-Shield”, a baseboard that translates BLEduino’s pin layout into the traditional Arduino layout, and allows you to […]

Bluetooth Versions Walkthrough, and Bluetooth 4.0 Low Energy Development Resources

I’ve seen more and more Bluetooth 4.0 LE devices in the last few months including RFDuino, Wimoto Motes, TI SensorTag, and Scadanu Scout, so I thought it would be good to write a bit about Bluetooth. First, I’ll write about the different version of Bluetooth, since I was still confused with the practical implications between the versions, and then I’ll show some development kits and software resources to play around and/or develop Bluetooth 4.0 LE applications both on devices and hosts. Bluetooth Versions Bluetooth v1.0 and v1.0B The Bluetooth 1.0 Specification was released in 1999, and according to an entry in Wikipedia, 1.0 and 1.0B devices had many issues, mainly interoperability issues. You won’t find any Bluetooth 1.0 device today. Bluetooth v1.1 Bluetooth v1.1 was ratified as IEEE Standard 802.15.1-2002 in 2002. It fixed many issues found in the previous specifications, added the option to use non-encrypted channels, as well […]

$19 RFDuino is a Coin-sized Bluetooth Arduino-compatible Board

RFDuino is a tiny board, about the size of a coin, powered by Nordic nRF51822 Cortex M0 SoC including bluetooth 4.0 LE support, and software compatible with Arduino UNO and DUE board, so you can just use Arduino sketches with the board. Bluetooth allows it to communicate with your smartphone (iPhone for now, but Android support is coming) to control motors & relays, monitor sensors, turn LEDs on/off, and more. Key features of RFDuino board: MCU – Nordic nRF51822 Cortex M0 @ 16 MHz Memory –  16 KB on-chip SRAM Storage – 256 KB on-chip Flash Connectivity – Bluetooth 4.0 Low Energy built in MCU GPIO – 7 pin software configurable as digital IO, analog ADC, SPI, I2C, UART and PWM.  The company currently offers several stackable shields for RFDuino including battery shields (1x AAA, 2x AAA, and CR2032 coin battery), a servo shield, a USB shield, a prototype shield […]