Gravity: Digital Buzzer

To ease the difficult of using this sensor, a Gravity Interface is adapted to allow plug&play. The IO expansion shield is the best match for this sound senor connecting to your Arduino. As this sensor can work at 3.3V which make it compatible with Raspberry Pi, intel edison, joule and curie.

• Wide voltage range from 3.3V to 5V
• Standard assembling structure (two 3mm holes with multiple of 5cm as interval)
• Easily recognitive interfaces of sensors ("A" for analog and "D" for digital)
• Icons to simplely illustrate sensor function
• High quality connector
• Immersion gold surface

• Type: Digital
• Power supply: 5VDC

• Wiki (Digital Buzzer Module)
• Schematic

• Arduino Buzzer x1
• Digital Sensor Cable (SKU:FIT0011) x1

Project 1. Head-mounted Myoelectric Mouse
Parts in need:
Arduino Leonardo Microcontroller
Gravity : Digital Buzzer for Arduino

6 DOF IMU Shield For Arduino
Speech Module

Project 2. How to Make a Santa Alarm
Using the new RGB color sensor available at DFRobot, I rigged up a simple proximity alarm. I can use this to warn me if someone is in a close range of my Christmas tree putting presents under there. The hardware of this project is pretty simple and suitable for beginners.
1 x Bluno Microcontroller v2.0 (SKU: DFR0267)
1 x Gesture Sensor
1 x I/O Expansion Shield v7.1 (SKU: DFR0265) (the extra I/O’s are very useful and prevent messy wiring!)
1 x Digital Buzzer Module (SKU: DFR0032)
1 x 220R Resistor (any will do)
1 x Red LED
1 x Breadboard (for prototyping and checking the circuit – any will do.)
Jumper Wires for connections

Project 3. Annoying Soil Moisture Sensor with Photon and IFTTT Project

Never forget to water your plants again with this super annoying project. It combines visual, auditory, and textual cues that will prevent you from doing anything else until you provide your plant with much-needed hydration. A piezo buzzer constantly blares a shrill note, while a super-bright LED annoys your peripheral vision. In addition, this project will send constant texts to your phone reminding you that your plant needs to be watered. Sounds like fun, right?

Hardware Components:

• Digital Buzzer For Arduino
• Bright LED Module
• Analog Capacitive Soil Moisture Sensor
• Particle Photon
• Micro USB Cable
• 400 Tie Point Interlocking Solderless Breadboard
• Arduino Jumper Cables (M/M) (65 Pack)

Project 4: micro:bit Laser Target

The ambient light sensor sensor detects the intensity of the laser pointer. If it is greater than 400, it will sound the buzzer and the servo will make the target fall and up. Game over when it reaches 10. Press A to reset score to 0.

Hardware components:

• Micro:bit *1
• DFROBOT micro:bit expansion shield *1
• DFRobot Ambient Light Sensor *1
• DFRobot Digital Buzzer Module *1
• laser pointer
• Servo motor 9g *1
• Popsicle
• Bottle cap
• paper target
• Glue gun
• Crocodile clip
• Micro switch
• 3V battery case