# Sixth Lichuang Electric Competition# Rhythm Speaker

Note: * is required

Please fill it out during the registration stage↓

* 1. Introduction to project functions

This design draws on: (1) SOP16 packaged audio power amplifier solution verification board solution; (2) Chai Gong speaker solution (https://oshwhub.com/winton/d-lei-shuo-zi-gong-fang); (3) Desktop pixel audio lamp from Bilibili Up’s Master Creation Project;

(1) The core part of the project refers to the project of Chai Gong. https://oshwhub.com/winton/d-lei-shuo-zi-gong-fang

Deleted the 2-way LED indicators in the original project

(2)The audio chip uses EG8405

(3) Drawing on the desktop pixel audio lamp from the master creator plan of B site up, the Arduino mini pro module and the 8X8 WS2812B module are added to form a rhythm module, which can be used in conjunction with the audio to display colorful rhythms.

*2. Project attributes

For the original project, please refer to https://oshwhub.com/winton/d-lei-shuo-zi-gong-fang

This project refers to other people's projects and improves them according to my own actual situation. This is the first time to participate.

* 3. Open source agreement

GPL3.0

Please fill in during the competition stage↓

*4. Hardware part

The power chip uses EG8405.

Rhythm spectrum identification uses the Arduino mini pro 5V version.

The 8x8 LED matrix is ​​a WS2812B matrix board.

The Bluetooth module uses M18 Bluetooth audio module.

The speaker requires an external 5V DC power supply.

Note: The second version of the PCB changes the power and audio interfaces to 2.54mm pin headers for easy plugging.

*5. Software part

See project attachments for details

The FFT function is used for spectrum identification.

*6. BOM list

*7. Contest LOGO verification

* 8. Demonstrate your project and record it as a video for uploading

Video requirements: Please shoot horizontally, with a resolution of no less than 1280×720, in Mp4/Mov format, and the size of a single video is limited to 100M;

Video title: Lichuang Electric Competition: {Project Name}-{Video Module Name}; such as Lichuang Electric Competition: "Autonomous Driving" - Team Introduction.

More details: https://diy.szlcsc.com/posts/06c94d90c2c447dfbd9ed7339ff4a5b1