This USB aromatherapy humidifier control board is a highly integrated intelligent drive system designed specifically for modern desktop, in-vehicle, and personal health scenarios. As the core controller of the device, it integrates ultrasonic atomization, intelligent aromatherapy, multi-mode control, and energy-saving management into a single miniature PCB board. Through advanced MCU main control and precision analog circuitry, it achieves efficient and stable operation under 5V USB power supply.


| Input Voltage | DC 5V/1A (Standard USB), Expandable to 5V-12V/2A |
| Rated Power | Atomization Mode ≤ 10W; Aromatherapy Mode ≤ 3W |
| Standby Power | < 0.3W |
| Ultrasonic Freq | 1.7MHz – 2.4MHz (Automatic Resonance Tracking) |
| Mist Particle Size | ≤ 3.5μm (D90) |
| Main Controller | ARM Cortex-M0+ Series, 48MHz, Floating Point Unit |
| Atomization Output | 1 Channel, PWM Tuned, Max Drive Current 800mA |
| Aroma Control | 1 Independent PWM Channel, 10 Adjustable Levels |
| Sensors | Water Level (Capacitive), Ambient Light, Temperature Monitoring |
| Connectivity | UART x1 (Wi-Fi/BT), I²C x1, Infrared Receiver |
| Display/Light | RGB LED Driver, Max Output 12V/1A |
| PCB Dimensions | 45mm x 35mm x 1.6mm (Customizable) |
| Operating Temp | -10°C to 60°C |
| Storage Temp | -20°C to 85°C |
| Humidity | 10% – 90% RH (Non-condensing) |
| Protection Level | IPX3 (Splash-proof, Optional Conformal Coating) |
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