Would you like to add powerful and easy-to-use Bluetooth Low Energy to your robot, art or other electronics project? Heck yeah! With BLE now included in modern smart phones and tablets, its fun to add wireless connectivity. So what you really need is the new Adafruit Bluefruit LE SPI Friend!

The Bluefruit LE SPI Friend makes it easy to add Bluetooth Low Energy connectivity to anything that supports SPI communication.  Connect to your Arduino or other microcontroller using the common four-pin SPI interface (MISO, MOSI, SCK and CS/SSEL) plus a 5th GPIO pin for interrupts (to let the Arduino know when data or a response is ready).

If you like Serial communication more than SPI, we also have a version that can talk UART

This multi-function module can do quite a lot! For most people, they'll be very happy to use the standard Nordic UART RX/TX profile. In this profile, the Bluefruit acts as a data pipe, that can 'transparently' transmit back and forth from your iOS or Android device. You can use our iOS App or Android App to get started sending data from your Arduino to your phone quickly and painlessly.

Why Use Adafruit's Module?

There are plenty of BLE modules out there, with varying quality on the HW design as well as the firmware.  

One of the biggest advantages of the Adafruit Bluefruit LE family is that we wrote all of the firmware running on the devices ourselves from scratch.

We control every line of code that runs on our modules ... and so we aren't at the mercy of any third party vendors who may or may not be interested in keeping their code up to date or catering to our customer's needs.

Because we control everything about the product, we add features that are important to our customers, can solve any issues that do come up without begging any 3rd parties, and we can even change Bluetooth SoCs entirely if the need ever arises!

Technical Specifications

• ARM Cortex M0 core running at 16MHz (nRF51822)
• 256KB flash memory
• 32KB SRAM
• Transport: SPI at 4MHz with HW IRQ (5 pins required)
• 5V-safe inputs (Arduino Uno friendly, etc.)
• On-board 3.3V voltage regulation
• Bootloader with support for safe OTA firmware updates
• Easy AT command set to get up and running quickly