A very special humidifier

The initial plan is to make a small humidifier with a 3D-coated water tank and top cover. The outer shell features an attractive pattern on the panel, and the overall appearance is quite good when closed. This design includes the schematic diagram, PCB, 3D shell design, and panel design.
The control chip uses an STC main controller, paired with a 108kHz frequency oscillation circuit driven by MOSFETs, which drives the atomizing plate to vibrate at high frequency, instantly atomizing water into small droplets, resulting in a visible atomization effect. Cleverly, the 18650 battery casing is used as a cover, creating the illusion of mist emanating from the 18650, coupled with gradually brightening red LEDs, giving the impression that the battery is short-circuiting, emitting red light and smoke – quite exciting! Give it a try, friends!
The board also includes four WS2812 LEDs, a BLE Bluetooth module, a DHT11 temperature and humidity sensor, and a lithium battery charging board.
Currently, everything is complete except for the code for BLE and DHT11, which are still under development. It has at least achieved the most basic functionality. Future upgrades will include BLE and DHT11 to enable features such as automatic humidification based on humidity, direct Bluetooth control via mobile phone, and deep sleep mode with current less than 1µA when not in use. Stay tuned!
A high-definition video can be viewed on Bilibili: https://www.bilibili.com/video/BV1BC411V795/
 
For more electronic gadgets, search for '志宇益生菌' on Bilibili to see more interesting project videos.