HardLabs

Koi mini mp3-player

fajr-lilypad·koi-mini-mp3-player·PCB/MP3KicadProject.kicad_pcb

Koi mini mp3-player PCB layout, top view — open source AVR/Arduino board by fajr-lilypad

About the Koi mini mp3-player PCB

Koi mini mp3-player is an open source AVR/Arduino PCB design by fajr-lilypad, published on GitHub. It is a 2-layer board measuring 63.3 × 128.6 mm, with 9 components from 7 distinct parts.

Its main chip is the Arduino Pro Mini, from the AVR/Arduino family. Other key parts include the df mini player and 1.3 Oled Screen. By type, the board carries 2 ICs, 1 module, 1 connector, 1 battery holder and 1 resistor.

It belongs with the audio and displays & leds designs in this gallery.

From the project

A koi mp3 player! This is an introduction for me to computer and electrical engineering concepts, one of my first times with kicad and creating a more complex custom pcb!

I came up with this idea when I came across creaters making projects that incorporated audio, and since I don't have as much experience with electrical projects, I thought this would be a fun and educational endeavor. When thinking over what cute designs and shapes I could make this, I became inspired by the friendly koi currency mascot used by hackclub's fallout program! I made this project because I wanted to learn more about complex electronics projects, as well as creating something practical that I can use day to day, and I listen to music all the time! And thus, here we are. This will…

Koi mini mp3-player, from the project README
From the project README

Main components on the Koi mini mp3-player

df mini player1.3 Oled ScreenArduino Pro Mini

Koi mini mp3-player bill of materials (BOM)

9 components, 7 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
df mini player
U1
1
1.3 Oled Screen
U2
1
Arduino Pro Mini
A1
1
female headphone jack
J1
1
Battery_Cell
BT1
3
SW_Push
LeftButton1, RightButton1, SelectButton1
1
Resistor
R1

Koi mini mp3-player design files

The KiCad project lives in the fajr-lilypad/koi-mini-mp3-player repository on GitHub; these links point at the commit this page was built from.

Koi mini mp3-player: common questions

What microcontroller does the Koi mini mp3-player use?

The Koi mini mp3-player is built around the Arduino Pro Mini, from the AVR/Arduino family.

How big is the Koi mini mp3-player PCB?

The Koi mini mp3-player measures 63.3 × 128.6 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Koi mini mp3-player?

9 components, from 7 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.

Where can I download the Koi mini mp3-player design files?

From the fajr-lilypad/koi-mini-mp3-player repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.

Can I use the Koi mini mp3-player design in my own project?

The repository has no license, so all rights stay with fajr-lilypad. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the Koi mini 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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