DFRobot Gravity: Digital Buzzer For Arduino

  • Product ID: 4102
  • MPN: DFR84
M.R.P: ₹284.70
₹240.90 Backordered
₹284.26 (Incl. GST)
You Save: ₹43.80 (15%)
Estimated delivery between Dec 11 - Dec 17



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Here is the simplest sound making module that you can use High/Low to drive it.  Just change the frequency it buzz, you can hear different sound. It is widely used on your daily application, like PC, refrigerator,phones and so on. And you also can create many interesting interactive project with this small but useful module.

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 Piintel 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




Project 1. Head-mounted Myoelectric Mouse
Parts in need:
Arduino Leonardo Microcontroller
Gravity : Digital Buzzer for Arduino
Gravity: Analog EMG Sensor by OYMotion
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

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