2 layers70 × 85 mm
2 layers
Mp3Pal
mkrueger/Mp3PalMP3 box for toddlers
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 35
- Nets
- 67
- Pads
- 159
- Tracks, vias
- 87, 0
- Routed
- Yes
- KiCad
- KiCad 5 (file 20171130)
- Created
- 8 Sep 2020
- Updated
- 31 Jul 2021
Overview
Mp3Pal is an open-source printed circuit board by mkrueger, from the mkrueger/Mp3Pal repository on GitHub, published under the Apache-2.0 licence. It is a 2-layer board with 35 parts on 67 nets, routed with 87 tracks and 0 vias.
It is built around the 74HC153D and 74HC238D. Its parts include 13 switches, 9 resistors, 5 diodes, 3 ICs and 1 capacitor. It belongs with the AVR (ATmega, ATtiny) boards of this library.
Main components
2
74HC153D
SOIC-16-40℃~+125℃ 160uA 2V~6V 44ns@4.5V,50pF 5.2mA 5.2mA 74HC 8/2 Multiplexer Output enable high-impedance Single Supply SOIC-16 Signal Switches, Multiplexers, Decoders ROHSNexperiaSignal Switches, Multiplexers, Decoders74HC238D
SOP-16SOP-16 Signal Switches, Multiplexers, Decoders ROHSMDDSignal Switches, Multiplexers, Decoders
README
README.mdMP3Pal
MP3 player for kids based tonunio and Hörbert design.
Features
- Plays audio from a SD Card
- Select playlists via 12 buttons and rfid tags
Part list
- Arduino Nano
- DFPlayer mini
- Speaker Visaton FR 10 HM
- Guitar Potentiometer
- 74HC238, 74HC153
- 9 Arcade buttons + 3 Acracde buttons with LED
- AZDelivery Battery Expansion Shield 18650
- 18650 Battery
- Göldo Dome Chrome
- Handle from DIY Store
- Resistors 5x 10k, 1x 1k, 3x 100
- 1 Capacitor 100 uF (optional)
- RFID tags, magnets and figures
- Threads for 3D prints (I use the ones from Ruthex) M2, M3, M4
- Wires
- JST 2.5 Connectors & Wires
- Mini Micro JST 2.0 (with cables & pin connectors)
… to be continued (but it's below 100 Euro - if you get it from ali express it's maybe ~50)
Schematic
Alternatives
Tonunio
https://www.voss.earth/tonuino/
KidsMP3Player
Parts
35| Qty | Value | Footprint | References |
|---|---|---|---|
| 12 | SW_Push | Connector_JST:JST_JWPF_B02B-JWPF-SK-R_1x02_P2.00mm_Vertical | SW1, SW2, SW3, SW4, SW5, SW6, SW7, SW8, SW9, SW10, SW11, SW12 |
| 4 | 10k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P5.08mm_Vertical | R5, R6, R8, R9 |
| 3 | 100R | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P5.08mm_Vertical | R2, R3, R4 |
| 3 | LED | Connector_JST:JST_EH_B2B-EH-A_1x02_P2.50mm_Vertical | D1, D2, D3 |
| 2 | D | Diode_THT:D_5KPW_P7.62mm_Vertical_AnodeUp | D4, D5 |
| 1 | 1k | OptoDevice:R_LDR_4.9x4.2mm_P2.54mm_Vertical | R1 |
| 1 | 74HC153 | Connector_PinSocket_2.54mm:PinSocket_2x08_P2.54mm_Horizontal | U3 |
| 1 | 74HC238 | Connector_PinSocket_2.54mm:PinSocket_2x08_P2.54mm_Horizontal | U2 |
| 1 | Arduino_Nano_v2.x | Module:Arduino_Nano | A1 |
| 1 | C | Capacitor_THT:C_Axial_L5.1mm_D3.1mm_P7.50mm_Horizontal | C1 |
| 1 | DFPLAYER_MINI | Package_DIP:DIP-16_W10.16mm | U1 |
| 1 | R | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P5.08mm_Vertical | R7 |
| 1 | RFID-RC522-MODULE | Connector_JST:JST_EH_B8B-EH-A_1x08_P2.50mm_Vertical | P1 |
| 1 | R_POT_US | Connector_JST:JST_EH_S3B-EH_1x03_P2.50mm_Horizontal | RV1 |
| 1 | SW_DIP_x01 | Connector_JST:JST_EH_B2B-EH-A_1x02_P2.50mm_Vertical | SW13 |
| 1 | Speaker | Buzzer_Beeper:Buzzer_12x9.5RM7.6 | LS1 |
Questions
What parts does the Mp3Pal use?
35 parts, built around the 74HC153D and 74HC238D. 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 Mp3Pal KiCad files?
From the mkrueger/Mp3Pal repository on GitHub, at the commit this page was made from: the board is PCB_Design/Mp3Pal.kicad_pcb and its schematic PCB_Design/Mp3Pal.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Mp3Pal design in my own project?
Its repository publishes it under the Apache-2.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).
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