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Availability date: 07/22/2014
Blend - BLE+Arduino is a combination of Arduino as well as BLE
Blend is an integrated developement board, we have "blend"ed Arduino with Bluetooth 4.0 Low Energy (aka BLE or Bluetooth Smart) into a single board. It is targeted for makers to develop low power Internet-Of-Things (IoT) projects quickly and easily.
Blend is 100% compatible with sketches and Shields that work with Arduino Leonardo. The micro-controller unit (MCU) is Atmel ATmega32U4 and the BLE chip is Nordic nRF8001. Blend runs as BLE peripheral role only, it allows BLE central role devices to establish connection with.
Current supported BLE central devices:
Android 4.3 or above (4.4 recommended for stability) with Bluetooth 4.0 hardware support
Windows Phone 8.1
Windows 8.1 with built-in Bluetooth 4.0 or USB dongle
Mac OSX 10.9.2 with built-in Bluetooth 4.0 or USB dongle
Linux with BlueZ 5.1 with built-in Bluetooth 4.0 or USB dongle
We recommend using Codebender, an online development and collaboration platform for all Arduino users, please read to our Quick Start with Codebender to start playing with your Blend in just a few easy steps.
We have also prepared a detail guide Getting Started with Blend to show you how to program your Blend with Arduino IDE.
According to the Atmega32U4 specification, the MCU can run at either 8MHz@3.3V or 16MHz@5V. Normally, you should set the voltage selection switch to 5V to run the board at 16MHz. However if you need to connect to shields or external components, such as sensors or MCU, which accept 3.3V only, you should change the operating voltage to 3.3V using the voltage selection switch.
Note that while Blend is running at 3.3V, the Atmega32U4 will still run at 16MHz which is outside Atmel's specification, the CPU is overclocked (we have not seen any issue so far).
|MISO||Input||Output||SPI: Master In Slave Out|
|MOSI||Output||Input||SPI: Master Out Slave In|
|SCK||Output||Input||SPI: Serial data Clock|
|REQN||Output||Input||Application controller to nRF8001 handshake signal|
|RDYN||Input||Output||nRF8001 to application controller handshake signal|
A. Reset button - ATmega32U4 & nRF8001
B. 3.3V/5V voltage selection switch
C. Indicator LED for power on, RX, TX and pin 13
D. Atmel ATmega32U4
E. Factory testing pins
F. REQN and RDYN selection pins from pin 0 to 3, 6 to 11
G. Optional Pin to control the nRF8001 reset
H. RedBearLab nRF8001 Module
I. SPI interface for nRF8001 or other SPI usage
J. Onboard antenna
K. External antenna connector
|Wireless Chip||Nordic nRF8001|
|Operating Voltage||3.3V or 5V|
|Input Voltage||5V (USB) |
6.5-12V (DC input or VIN)
|Note: Use only one power source at a time, |
otherwise you will damage the board.
|Connectivity||Bluetooth 4.0 Low Energy|
|Flash Memory||32KB (of which 4 KB used by bootloader)|
|Dimensions||73 x 54 x 12mm (120 x 73 x 25mm with packaging)|
|Weight||19g (37g with packaging)|
|Pin Functions||0||Digital I/O or Serial RX|
|1||Digital I/O or Serial TX|
|2||Digital I/O or I2C SDA|
|3||Digital I/O or PWM or I2C SCL|
|4||Digital I/O or Analog Input (A6)|
|5||Digital I/O or PWM|
|6||Digital I/O or PWM|
|7||Digital I/O or Analog Input (A7)|
|8||Digital I/O or Analog Input (A8)|
|9||Digital I/O or PWM or Analog Input (A9)|
|10||Digital I/O or PWM or Analog Input (A10)|
|11||Digital I/O or PWM|
|12||Digital I/O or Analog Input (A11)|
|13||Digital I/O or PWM, also connected to an LED|
|Note: The pins that you have selected for REQN, RDYN and RF-RESET are not available for program usage.|
|A0||Digital I/O or Analog Input|
|A1||Digital I/O or Analog Input|
|A2||Digital I/O or Analog Input|
|A3||Digital I/O or Analog Input|
|A4||Digital I/O or Analog Input|
|A5||Digital I/O or Analog Input|
|Note: SPI is enabled by default for nRF8001.|