Adafruit Bluefruit BLE Bluetooth Low Energy Boards – Adafruit 2487, The Adafruit FLORA Wearable Bluefruit Low Energy Module lets you cut through the pile of Bluetooth Classic APIs, development tools and licences, and treat a Bluetooth LE connection just like a serial link. Send and receive keystrokes from your favourite terminal software, from software such as Python (via PySerial) or from your smartphone. Adafruit have built a software stack right into the Bluetooth LE board, so you can focus on sending and receiving the data you want for your application. Its optional command mode lets you create GATT services and characteristics, make it into a UriBeacon and set the device advertising. The UriBeacon is part of the Google “Physical Web” initiative where a Bluetooth LE device broadcasts a URI which smartphone and tablet apps can detect. For example, the URI could lead to your home page if it’s a wearable project. Another particularly useful feature is the over the air (OTA) programming from any BLE capable iOS or Android device. If you look closely at the images you will see the DFU button just below the Bluetooth module, DFU stands for “Device Firmware Update”.The Bluefruit Friend is based around the very capable MDBT40 chipset (similar to the Nordic nRF51822) with Adafruit’s own 100% custom firmware. The MDBT40 has an ARM Cortex M0 core running at 16MHz, 256kbytes Flash memory, 32kbytes SRAM. It talks to the host microcontroller over 4 or 5 wire SPI.Supplied as a fully assembled and tested Bluetooth Low Energy board plus a strip of 0.1in. header pins for you to solder on as required. See Adafruit’s “Quick Start” guide, part of their massive free tutorial with software examples. They also provide an Android app and an iOS app which can talk BLE to your project. We also supply a range of FLORA, GEMMA and other wearable products. Please note, we do not include a battery with this product. Adafruit 2487 Flora Wearable Bluefruit LE Module BLE