MP3-Player
About the MP3-Player PCB
MP3-Player is an open source AVR/Arduino PCB design by Mithra806, published on GitHub under the MIT license. It is a 2-layer board measuring 98.5 × 102.5 mm, with 12 components from 10 distinct parts.
Its main chip is the Arduino_Nano_v3.x, from the AVR/Arduino family. Other key parts include the TP4056-42-ESOP8 and ER_OLEDM0.91_1x-I2C. By type, the board carries 4 switches, 3 ICs, 2 connectors, 1 module, 1 battery holder and 1 resistor.
It belongs with the audio, power & battery and displays & leds designs in this gallery.
From the project
A physical mp3 player that I made using KiCad
A rechargeable MP3 player I designed from scratch in KiCad. It's got buttons for playback control and a small screen that shows what track is playing.
Main components on the MP3-Player
MP3-Player bill of materials (BOM)
12 components, 10 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | TP4056-42-ESOP8 | SOIC-8-1EP_3.9x4.9mm_P1.27mm_EP2.41x3.3mm_ThermalVias | U1 |
| 1 | ~ | DFPlayer_Mini | U2 |
| 1 | ER_OLEDM0.91_1x-I2C | ER_OLEDM0.91_1x-I2C | U3 |
| 1 | Arduino_Nano_v3.x | Arduino_Nano | A1 |
| 1 | AudioJack2 | Jack_3.5mm_CUI_SJ1-3535NG_Horizontal | J1 |
| 1 | USB_B_Micro | USB_Micro-B_Molex-105017-0001 | J2 |
| 1 | Battery_Cell | BatteryHolder_Keystone_1042_1x18650 | BT1 |
| 1 | SW_SPST | SW_SPST_Omron_B3F-40xx | SW1 |
| 3 | SW_Push | SW_PUSH_6mm_H5mm | SW2, SW3, SW4 |
| 1 | 2k | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R1 |
MP3-Player design files
The KiCad project lives in the Mithra806/MP3-Player repository on GitHub; these links point at the commit this page was built from.
- Layoutmp3player.kicad_pcb
- Schematicmp3player.kicad_sch
MP3-Player: common questions
What microcontroller does the MP3-Player use?
The MP3-Player is built around the Arduino_Nano_v3.x, from the AVR/Arduino family.
How big is the MP3-Player PCB?
The MP3-Player measures 98.5 × 102.5 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the MP3-Player?
12 components, from 10 distinct parts. The full bill of materials is listed on this page.
Where can I download the MP3-Player design files?
From the Mithra806/MP3-Player repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the MP3-Player design in my own project?
Yes, under the terms of its MIT license, which Mithra806 chose for the repository.
Can I test firmware for the MP3-Player without the hardware?
Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug AVR/Arduino firmware against it before you order a PCB.
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