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PVC pipe Bluetooth speaker: Powerful bass build

Cut PVC pipe to size, mount dual speakers and amp board inside with foam damping, wire Bluetooth receiver and battery for ...
EDN

BLEduino Makes Porting Bluetooth Onto Projects a Cinch

Where the Sparkcore adds Wi-Fi to electronic projects, BLEduino adds Bluetooth 4.0! This nifty thumbnail-sized gadget is an Arduino-compatible development board featuring built-in Bluetooth Low Energy ...