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Adafruit Bluefruit LE Shield adds BLE 4
5mm screw terminals for 18–26AWG wires
Electrical
Quantity Item 1 Arduino Uno 1 USB A-B cable 1 L293D motor shield 1 Ultrasonic sensor (HC-SR04) 1 AT-09 BLE Bluetooth module 8 Female-to-female jumper wires
power FET switch
AC/DC Power Supplies (5V & 12V) Voltage Output:12V Adafruit Bluefruit LE Shield addsThese wall mount adapters convert standard AC outlet power to stable DC for electronics projects, like powering Arduino boards (5V) or motors relays (12V). They're reliable for first year engineering students testing circuits without batteries. 5V Power Supply Model: LJH 520 Input: Universal 100240V AC (works worldwide with plug adapter) Output: 5V DC at 2A (10W)ideal for USB devices, LEDs, or microcontrollers Connector: Typically 5. 5mm barrel jack
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