ESP32 MP3 Player
An ESP32-based MP3 player that plays audio files from an SD card using an external audio decoder and speaker.
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₹3287.00
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Components
8 items
Difficulty
Intermediate
Build Time
1.5 – 2 hours
Project Details
How It Works
How It WorksESP32 initializes the MP3 decoder. MP3 files are read from the SD card. Audio data is decoded by the decoder module. Output audio is sent to the speaker. Buttons control play, pause, and track change.
Prerequisites
Basic knowledge of ESP32 programming, understanding of serial communication, familiarity with Arduino IDE, and experience with SD card file systems.
What You'll Learn
What You'll LearnUnderstanding how MP3 files are decoded and played
Using hardware serial to communicate with external modules
Reading and managing files from SD card storage
Building audio playback systems with microcontrollers
Key Features
Uses external decoder for better audio quality than ESP32 internal DAC
Control playback via physical buttons or serial commands
ESP32 allows adding wireless control capabilities
Efficient audio playback suitable for portable applications
What's Included in the Kit
| Component | Qty | Price |
|---|---|---|
 | 1 | ₹0.00 |
 | 1 | ₹85.00 |
 | 1 | ₹0.00 |
 | 1 | ₹589.00 |
Push Buttons | 3 | ₹0.00₹0.00 × 3 |
 | 1 | ₹171.00 |
 | 1 | ₹77.00 |
 | 1 | ₹7.00 |
Operating Instructions
Pin Connections
Pin Connections| MCU Pin | Connected To | Purpose | Notes |
|---|---|---|---|
| GPIO 16 (RX2) | DFPlayer TX | Serial receive from DFPlayer | Use 1kΩ resistor between ESP32 TX and DFPlayer RX |
| GPIO 17 (TX2) | DFPlayer RX | Serial transmit to DFPlayer | Use 1kΩ resistor between ESP32 TX and DFPlayer RX |
| 5V | DFPlayer VCC | Power supply for DFPlayer | - |
| GND | DFPlayer GND | Common ground connection | - |
| N/A | Speaker SPK1 / SPK2 | Audio output to speaker | Speaker connects directly to DFPlayer |
Tools Required
Tools RequiredSafety Precautions
Electrical
- ⚠Use correct supply voltage
- ⚠Avoid high speaker volume
Operating
- ⚠Disconnect power before wiring
- ⚠SD card must be FAT32 formatted
Frequently Asked Questions
Frequently Asked QuestionsQ:Can ESP32 play MP3 without decoder?
Q:Can I control via Wi-Fi?
Q:Can Bluetooth audio be added?
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