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3W 8 Ohm Speaker for Arduino Audio Projects & DFPlayer Mini
Rs. 300.00
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3W 8 Ohm Speaker for Arduino Audio & DFPlayer Mini
A compact 3-watt 8-ohm speaker designed for clear audio output in Arduino, ESP32, and Raspberry Pi projects; pairs directly with the DFPlayer Mini module for simple sound playback and voice alerts.
Key Specifications
| Power Rating | 3 W (nominal) |
|---|---|
| Impedance | 8 Ω |
| Frequency Response | 200 Hz – 15 kHz |
| Sensitivity | 85 dB (1W/1m) |
| Cone Diameter | 40 mm |
| Magnet Type | Ferrite |
| Connector | 2-pin JST PH 2.0 (8 cm wire) |
| Dimensions | 40 mm (diameter) x 5 mm (thickness) |
What You Can Build With This
- Mini Doorbell: Use an Arduino Uno with a DFPlayer Mini and button to play a custom doorbell chime through this speaker.
- WiFi Voice Notifier: Connect an ESP32 to a motion sensor and trigger pre-recorded voice alerts heard on the speaker.
- Portable Audio Player: Build a Raspberry Pi music player that outputs to this compact speaker for personal listening.
- Sound-Activated Alarm: CBSE Class 12 physics project using a microphone module, Arduino, and speaker to trigger an alarm on loud noise.
- Public Transport Audio Guide: B.Tech final year project using NFC tags to identify bus stops and announce them through the speaker for visually impaired commuters.
Compatibility
| Platform | Compatible | Connection | Library / Method |
|---|---|---|---|
| Arduino Uno R3 | Yes with DFPlayer Mini | D10 (TX), D11 (RX) SoftwareSerial | DFRobotDFPlayerMini |
| Arduino Nano | Yes with DFPlayer Mini | D10 (TX), D11 (RX) SoftwareSerial | DFRobotDFPlayerMini |
| Arduino Mega 2560 | Yes with DFPlayer Mini | Serial1 (D18 TX, D19 RX) or D10,D11 | DFRobotDFPlayerMini |
| ESP8266 NodeMCU | Yes with DFPlayer Mini | GPIO2 (TX), GPIO15 (RX) SoftwareSerial | DFRobotDFPlayerMini |
| ESP32 Dev Board | Yes with DFPlayer Mini | GPIO17 (TX2), GPIO16 (RX2) or any SoftwareSerial pins | DFRobotDFPlayerMini |
| Raspberry Pi Pico | Yes with DFPlayer Mini | GP0 (TX), GP1 (RX) UART | DFRobotDFPlayerMini (Arduino core) |
| Raspberry Pi 4 / 5 | Yes with DFPlayer Mini | GPIO14 (TX), GPIO15 (RX) /dev/serial0 | Python serial + DFPlayer protocol |
Wiring and Interface Notes
Connect the speaker’s + and – terminals to the SPK_1 and SPK_2 outputs of the DFPlayer Mini module. The speaker operates at amplifier-level signals; never connect it directly to a 3.3V or 5V GPIO pin. For best sound, mount the speaker in a small enclosure to improve bass and volume.
Frequently Asked Questions
Can I connect this speaker directly to Arduino without an amplifier?
No, Arduino GPIO pins cannot drive a passive speaker. You must use an amplifier like the DFPlayer Mini or a transistor circuit to power the speaker.
How loud is this 3W speaker for a typical classroom or desk setup?
The 3W output provides clear audio for personal use or a quiet classroom; for noisy areas, a higher‑wattage speaker or additional amplification is recommended.
What you can build with this
Clap Echo Reverb Box Kit with Arduino Uno
Clap Echo Reverb Box Variant 16 Kit with Arduino Uno
Gesture Volume Controller Kit with ESP32 + Sensor
ESP32 Bluetooth Audio Receiver Kit with ESP32
Tone Generator Audio Test Kit with Arduino Uno + LED
Capacitive Touch Keyboard Kit
Voice Pitch Shifter Kit with Arduino Due
Clap-Controlled MP3 Player Kit with Arduino Uno + Sensor
Ambient Noise Generator Kit with Arduino Uno
Optical Drum Pad Kit with Arduino Uno + Sensor
12-Step Melody Sequencer with Arduino Uno Touch Kit
Auto-Tune Pitch Corrector Kit with Arduino Due
Shipping Information
- Prepaid Orders: ₹75 for orders up to ₹999, FREE shipping above ₹999
- COD Orders: ₹125 shipping + ₹50 COD fee = ₹175 total
- Delivery Timeline: Dispatch in 1-2 days, delivery in 2-7 days depending on location
Returns & Warranty
- 7-Day Return: Manufacturing defects only (approval required)
- Warranty: 7 days from delivery
- Non-Returnable: Batteries, consumables, cut wires, clearance items