# Sixth Lichuang Electric Competition#Offline voice lantern (verified)

The offline voice module uses Qiyingtailun's CI-C22GS02S , and the chip is CI1122 . Test pins are used to make clips for fixation, which is convenient for disassembly. The main reason is that the module is highly playable and convenient for other subsequent tests.

The main control is ESP-07S , which is small and compact. Using Arduino for programming is very friendly to a novice like me.

The lamp beads are made of WS2812 lamp strips with one meter and 30 beads , and are wrapped around a PVC pipe with a diameter of 25 which just meets the height of the shell.

The shell uses a Baobao bar lamp (dry battery model), and the PCB openings are aligned with the original screw seats, which can be directly fixed.

Frontal photo ( the logo of the 6th Lichuang Electronic Competition and the logo of EDA )

Backside photo (the buttons are on the original lamp board, removed and reused)

Lamp bead winding

Install the base and fix it (the PVC pipe is coated with 704 and fixed, the 30*20 speaker is in the right position, and a 4 Ω 2W cavity speaker is used )

overall effect

The value of the original 2.5 yuan monochrome lamp immediately increased to 2.6 yuan for the offline voice colored lamp. Not even a cent more is worthy of its simple and unpretentious shell, which perfectly fits the name of Xiaohanhan .

Offline entries

Color control is that the offline module TX1 sends a semantic ID to ESP, using a custom semantic ID. The semantic ID of turning on the light is 0x6132. Except for the protocol part, ESP receives 0x3261, so remember to receive it in arduino when you do not change the offline voice SDK. Swap when judging data.

The volume part entries are identified through command word ID . From the command word semantic ID recognition example in the code, we moved to command word ID recognition. As for why semantic ID is not used , simply speaking, it does not ...

For the firmware production and burning of offline voice programs, please see the Chipintelli Documentation Center: https://platform.chipintelli.com/web#action=232&menu_id=193

For video tutorials of Lichuang Training Camp, please go to the official Blichuang EDA website : https://www.bilibili.com/video/BV1Vy4y1T7u8?p=3

Note: It is recommended to focus on the document center and supplement with video tutorials.

Complete schematic

Finally, let’s take a picture of the speaker selection. I heard that 4 Ω 3W cavity speakers are better, and the ones I bought are perfect. They are autistic...