DFPlayer Mini MP3 Module
by DFRobot / clone
SKU: PSA-CMP-DFPLAYER
No reviews yetTypical India street price
₹90–₹200
Play MP3/WAV from microSD — talking projects and school plays.
Interface: UART + speaker out
Get notified if we start selling this part
Concept
A tiny MP3 decoder that takes UART commands and drives a speaker directly.
A little theory
On-board decoder + amp. File naming on SD matters (01/001.mp3 conventions). Busy pin optional. 3.3 V logic on RX — level-shift from 5 V UNO TX. In the classroom, treat DFPlayer Mini MP3 Module as a beginner part using UART + speaker out. Typical India street price is about ₹90–₹200. Always verify voltage and pin labels on your exact module — silk screens vary across clones. Start with a datasheet or trusted learn guide, power the part correctly, share GND with the MCU, and test with a simple blink/read sketch before building the full project. Measure voltages with a multimeter when something fails, and keep actuator current off the MCU regulator.
How it works in a project
Format SD FAT32, copy mp3s, SoftwareSerial to RX/TX, DFRobotDFPlayerMini library.
Classroom & project use
- Talking quiz
- Museum exhibit audio
- Alarm voice prompts
Buying in India
Precautions
- Level-shift 5 V TX
- Do not short speaker pads
- Eject SD only when idle
Specifications
| Audio | MP3/WAV |
| Storage | microSD |
| Amp | on-board |
| Category | Communication Modules |
| Difficulty | Beginner |
| Voltage | 3.3–5V |
| Interface | UART + speaker out |
Pinout
VCC | RX | TX | BUSY | SPK_1 | SPK_2 | GND | USB± | DAC_R/L
