The HC-05, a Bluetooth to serial bridge, can be found for around $5 on the internet and therefore may be the cheapest way to add Bluetooth connectivity to your project. However, its default setting… ...

Posted in Arduino Hacks, LED Hacks, Transportation Hacks Tagged arduino nano, bicycle, hc-05, QI, turn signal, weatherproof ← Programmable Air Makes Robotics A Breeze Headlight Mod For An Audi ...

Thanks to the LightBlue Bean+, however, one of those roadblocks has been torn down. The Bean+ is basically an Arduino board that can be programmed via Bluetooth LE.