What it is
The ShillehTek DC 5V Ultrasonic Mist Maker Humidifier Module 108KHz USB is a low-noise, cold-fog atomizer that fractures water into an ultra-fine mist for DIY egg incubators, mushroom fruiting chambers, sensor-maintenance setups, and compact desktop humidifiers. It uses a tuned low-impedance driver at 108KHz and an atomizing sheet with ~5 micron aperture for fast evaporation and humidity control without soaking surfaces.
Pins
This module is powered from a 5V USB supply. For exact pin names (if your revision also provides pads/headers in addition to USB), refer to the silkscreen labels on the board/module and the listing photos for the correct pinout before wiring to an Arduino, Raspberry Pi, or other controller.
Technical Specifications
| Parameter | Value |
|---|---|
| Supply voltage | DC 5V (USB) |
| Ultrasonic frequency | 108KHz (resonant tuned driver) |
| Atomization aperture | Approx. 5 microns |
| Mist type | Fine cold fog / ultra-fine spray |
| Noise | Virtually without noise (per description) |
| Atomizing surface materials | Specialized glass glaze + stainless steel coating (improved acid/alkali resistance) |
| Maintenance | Plug-and-play piezoelectric disc replacement |
Frequently Asked Questions
What is the operating voltage of this ultrasonic mist maker module?
It is designed for a DC 5V supply via USB. Use a stable 5V source to keep mist output consistent.
Can I control this mist maker with an Arduino or Raspberry Pi?
Many makers switch 5V modules using external power control (for example, a suitable transistor/MOSFET or relay) rather than driving the ultrasonic circuit directly. Check the module’s silkscreen/labels and ensure your control method matches your module revision.
What does 108KHz mean on an ultrasonic humidifier module?
108KHz is the ultrasonic resonant frequency used to atomize water into a fine cold fog. The driver is tuned to this frequency for efficient conversion from electrical power to mist.
Will this produce a fine mist that won’t soak nearby surfaces?
The description indicates an ultra-fine spray with an aperture of approximately 5 microns, intended for rapid evaporation and humidity control. Placement and airflow still matter—aim the fog into circulating air for best results.
How do I maintain or replace the atomizing piezo disc?
This unit is described as supporting a plug-and-play replacement piezoelectric disc for easier maintenance. Power off the device before servicing, and match the replacement part to your module revision and fit.