LD2330 Voice Recognition Module_Smart Trash Can Floor_V1.0_20200115_[Verification Successful]

1. Module purchase (1) Based on the LD2330 module, speech recognition of garbage types and popularization of garbage classification knowledge. (Taobao purchase link: https://item.taobao.com/item.htm?spm=a230r.1.14.215.2c707ccdeq5SG2&id=550727058837&ns=1&abbucket=9#detail ) (2) 4 SG90 servos. (3) One speaker and one microphone. (4) One HY-SRF05 ultrasonic module. (5) A Micro SD card of 8G or less. (6) A trash can and a Type-Micro-B cable.

2. Function description (1) LD2330 1. It must be consistent with the baseboard interface. It is best to purchase the module linked to Taobao. 2. Speech recognition of garbage, popularization of garbage classification knowledge, and customized dialogues. 3. Play MP3 voice files. 4. The speaker and microphone are connected to the module. For information on the voice module, please ask the Taobao store. (2) Micro SD Card 1. Online text-to-speech MP3 website: http://tools.bugscaner.com/tts/ 2. Store the voice file in advance and insert it into the card slot. (3) SG90 steering gear & trash can 1. Control the opening and closing of four trash cans. 2. For the mechanical structure of the trash can, please refer to the following video link: https://www.bilibili.com/video/av53064010 (4) Ultrasonic 1. Determine which trash can your hand is on based on the measured distance and automatically open it. (5) Type-Micro-B line 1. Power supply

3. Finished product display (1) PCB half the size of a hand*^____^* (2) LD2330 module

(3) Servo SG90 module (don’t mind, I just bought one for the time being and will add it later (actually there are four trash cans), pictures are put together) (4) Ultrasonic module (5) Speaker (no positive and negative, only the microphone) (positive or negative) (6) Overall planning

4. Errors found during debugging (the schematic diagram and PCB in the information have been repaired) (1) Because the crystal oscillator part was forgotten to be grounded when drawing the schematic diagram, a line was jumped in the picture below. (2) Forgot to add the silk screen at the Jlink-OB SWD download interface.

5. Note: (1) The recognized junk voice texts and MP3 files are placed in the attachment. (2) The LD2330 module information is in the attachment. (3) The AD project and MDK project are both placed in the attachment. (4) Lichuang Project is imported from AD project. After importing, I found errors. If you are interested, please download the attachment. (AD project, the source code is in the attachment) (AD project, the source code is in the attachment)