Gravity: Digital Speaker Module

This speaker module is based on the 8002 speaker amplifier IC. It can be used as a buzzer and also play high quality audio. Volume output is controlled via the potentiometer.

The module has various advantages (e.g. a compact footprint, simple interface, wide voltage input range, long service life). It can be used with an Arduino I/O expansion shield for interactive, sound related creations.

• Operating voltage: 2.0 - 5.5V
• Interface Type: Digital
• Module size: 40mm x 40mm/ 1.57 inches x 1.57 inches
• Support Gravity interface
• Power rating (Speaker component): 0.5W
• Impedance (Speaker component): 8 ohm

Project 1. How to Make an Automatic Christmas Tree
With all the lights and decorations that people use at Christmas, power is left on all the time and electricity bills skyrocket. I made this motion detecting Christmas tree light setup that only turns on when people are nearby.
Hardware list:
PIR Sensor x1
Bluno x1
I/O Expansion Shield v7.1  x1
LED Strip x1
Relay Switch   x1
Mini mp3 module 
DFSpeaker
Regular power extension lead (with some modifications)
1k resistors x2

Microbit Project 2: Basketball score counter

Part needed

1 x IR sensor

1 x micro:bit

1 x micro:mate(breakout board)

1 X Gravity: Digital Speaker Module

Dupont cables

Basketball hoop

Project 3 Arduino Projects: Zelda Song Player
Things you may need in this project: Hardware components

• DFRobot DFRduino Uno R3
• DFRobot Input Shield for Arduino
• DFRobot Gravity: Digital Speaker Module
• Arduino UNO & Genuino UNO

Project 4. A Simple Raspberry Pi Electronic Organ Based on MPR121

Introduction:

I decided to utilize my expertise to DIY an electronic organ to join them.

• Product wiki 
• Documents 
• Arduino play melody 

• Gravity: Speaker module x1