2 layers65.1 × 28.6 mm
Power
b00lduck/esp32-audioplayer
Arduino IDE sketch for a ESP8266 based MP3 audio player with RFID control
32 parts2GPL-3.0
2 layers100 × 75 mm
Audioplayer
b00lduck/esp32-audioplayer2Arduino IDE sketch for a ESP8266 based MP3 audio player with RFID control
- Size
- 100 × 75 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 40
- Nets
- 65
- Pads
- 186
- Tracks, vias
- 665, 24
- Routed
- Yes
- KiCad
- KiCad 5 (file 20171130)
- Created
- 1 Aug 2017
- Updated
- 16 May 2023
Overview
Audioplayer is an open-source printed circuit board by b00lduck, from the b00lduck/esp32-audioplayer repository on GitHub, published under the GPL-3.0 licence. It is a 2-layer board of 100 × 75 mm with 40 parts on 65 nets, routed with 665 tracks and 24 vias.
It is built around the ULN2003. Its parts include 10 resistors, 8 capacitors, 7 ICs, 4 connectors and 1 diode. It belongs with the ESP32 boards of this library.
Main components
1README
README.mdesp32-audioplayer
ESP32 based MP3 audio player with RFID control and case made from laser cutted plywood
!!! WORK IN PROGRESS !!! !!! not functional yet !!!
Used electronic hardware components:
- ESP32 NodeMCU module
- RFID-RC522 module (i.e. https://www.ebay.de/itm/172603664748)
- VS1053B module with SD-slot (i.e. http://www.ebay.de/itm/272761135002)
- Mifare classic 13.56MHz RFID cards (clones will do the job too, i.e. http://www.ebay.de/itm/122525501095)
- Adafruit PowerBoost 500 Charger module
- 3.7V LiPo battery
- Class-D amplifier module
- SD-Card (i.e. 4GB)
- two Visaton FR7 (4 ohms) speakers
- Custom main board (see kicad folder for layout)
- Custom panel board (see kicad folder for layout)
- 1x 220uF 35V
- 1x 1uF 63V
- 4x 100nF
- 2x 47nF
- 1x resistor ladder 4x 4.7k
- 1x 10R
- 1x 10kR
- 1x 22kR
- 4x WSL10 (2x5 header 2.54mm with notch)
- 2x 2-pin header 2.54mm
- 4x 4-pin header 2.54mm
- some wire for airwires
- some insulated wire 1mm², red and black (for internal connections)
- 1x USB 2 Micro-B connector
- 1x power switch
- 1x USB 2 micro cable (for internal connection)
- optional: MEMS gyroscope module
- optional: 0.96 inch I2C OLED display
Wood parts:
- 6 sheets, one for every side of the case
- 2 distance rings for the speakers
Metal parts:
- 2x 100x75x0.8mm aluminium sheet
3D-Printed parts:
- 8x inner edge reinforcements
- 4x M3x3 standoff
- 8x M3*8 standoff (for main board)
- 4x M3x11 standoff (for MP3 board)
- 2x M3x6 standoff (for panel board)
- 2x M3x4 standoff (for panel board)
- 1x USB receptacle holder
- 1x SD-Card slot box
- 1x SD-Card slot cover
Screws
- 4x M3x25 DIN 7991/ISO 10642 (countersunk allen bolt)
- 32x M3 DIN 934/ISO 4042 (nut)
- 8x M3 DIN 125/ISO 7089 (washer)
- 8x M3x20 DIN 912/ISO 4762 (cylinder head allen bolt)
- 2x M2x10 DIN 912/ISO 4762 (cylinder head allen bolt) for amp
- 2x M2 DIN 934/ISO 4042 (nut)
- 2x M2 DIN 125/ISO 7089 (washer)
- 8x M3x?? DIN 7991/ISO 10642 (countersunk allen bolt) for speakers
- 24x M3x15 DIN 7991/ISO 10642 (countersunk allen bolt) for inner corners
Used software:
- VSCode with PlatformioIDE
Used Arduino Libraries:
- SdFat 1.0.7
- MFRC522 1.3.6
Port mapping
see src/config.h
3D printing
I used black 1.75 PETG filament for all parts. Layer height was 0.15mm at a printign speed of 30mm/s.
Parts
40| Qty | Value | Footprint | References |
|---|---|---|---|
| 3 | 1k | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal | R5, R8, R10 |
| 3 | C | Capacitor_THT:C_Disc_D5.1mm_W3.2mm_P5.00mm | C3, C5, C7 |
| 2 | 10k | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal | R1, R3 |
| 2 | 4.7n | Capacitor_THT:C_Rect_L7.0mm_W2.5mm_P5.00mm | C9, C10 |
| 2 | R | Connector_PinHeader_2.54mm:PinHeader_1x01_P2.54mm_Vertical | TP1, TP4 |
| 1 | 10 | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal | R6 |
| 1 | 100n | Capacitor_THT:C_Disc_D5.1mm_W3.2mm_P5.00mm | C6 |
| 1 | 100u | Capacitor_THT:CP_Radial_D10.0mm_P5.00mm | C2 |
| 1 | 1N4007 | Diode_THT:D_DO-41_SOD81_P10.16mm_Horizontal | D2 |
| 1 | 1u | Capacitor_THT:C_Rect_L7.2mm_W5.5mm_P5.00mm_FKS2_FKP2_MKS2_MKP2 | C8 |
| 1 | 22k | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal | R9 |
| 1 | 33k | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal | R2 |
| 1 | 470 | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal | R4 |
| 1 | 47k | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal | R7 |
| 1 | Conn_02x04_Odd_Even | Connector_PinHeader_2.54mm:PinHeader_2x04_P2.54mm_Vertical | J2 |
| 1 | ESP32-nodeMCU | audioplayer:esp32-nodemcu-noholes | U2 |
| 1 | GNDA | Connector_PinHeader_2.54mm:PinHeader_1x01_P2.54mm_Vertical | TP3 |
| 1 | GY-521 | audioplayer:gy-521-noholes | U4 |
| 1 | HW-323 | audioplayer:hw-323 | U7 |
| 1 | L | Connector_PinHeader_2.54mm:PinHeader_1x01_P2.54mm_Vertical | TP2 |
| 1 | OLED | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical | U3 |
| 1 | PB-500 | audioplayer:adafruit-pb500-charge | U1 |
| 1 | Panel | Connector_PinHeader_2.54mm:PinHeader_2x05_P2.54mm_Vertical | J1 |
| 1 | RFID | Connector_PinHeader_2.54mm:PinHeader_2x05_P2.54mm_Vertical | J4 |
| 1 | R_Network04 | Resistor_THT:R_Array_SIP5 | RN1 |
| 1 | SPK | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical | J3 |
| 1 | ULN2003 | Package_SO:SOIC-16W_5.3x10.2mm_P1.27mm | U6 |
| 1 | VS1053/SD_breakout | audioplayer:vs1053_breakout_upside_down | U5 |
The 35 most common of 40 parts.
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Questions
How big is the Audioplayer PCB?
It measures 100 × 75 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Audioplayer use?
40 parts, built around the ULN2003. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the Audioplayer KiCad files?
From the b00lduck/esp32-audioplayer repository on GitHub, at the commit this page was made from: the board is kicad/mainboard/audioplayer.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Audioplayer design in my own project?
Its repository publishes it under the GPL-3.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).