The Minor Snow solar term signifies the gradual onset of colder weather, and the season of falling snowflakes is approaching.
During this time, designing a sensor capable of detecting snowflakes is particularly interesting and practical.
This article will boldly envision three theoretical design schemes to help everyone better understand and apply this technology.
The first scheme is based on a capacitive touch sensor design.
By adding extra brass rods to a brass rod to interact with snowflakes, a capacitive touch sensor is formed.
When snowflakes land on this sensor, it causes a change in capacitance.
Using microcontrollers like the Arduino Nano, this change can be monitored in real-time and appropriate responses can be made.
For example, it can trigger an LED light to turn on or emit a sound alert.
This method is simple and cost-effective, making it very suitable for beginners to try.
The second scheme uses an ultrasonic sensor module.
HC-SR04 is a commonly used ultrasonic distance measuring module that can calculate the distance of an object by sending and receiving ultrasonic signals.
When this module is installed in an appropriate position, it will detect changes in distance when snowflakes pass by and send the data to the controller for processing.
By combining with other sensors such as temperature and humidity sensors, more accurate snowflake detection can be achieved.
The advantage of this method is its low environmental requirements, making it suitable for various scenarios.
The third scheme combines a dynamic snowflake effect display with an OLED screen.
ESP8266 + OLED I2C screen can be used to display dynamic snowflake effects.
By programming to control the brightness and color changes of each LED, the beautiful scene of falling snowflakes can be simulated.
At the same time, data input from touch sensors or ultrasonic sensors can be added to make the display content richer and more diverse.
This method not only visually showcases the presence of snowflakes but also increases interactivity and fun.
Whether it is a simple design based on capacitance changes, a complex system utilizing ultrasonic technology, or an innovative scheme combining visual effects, all can add a touch of technological color to the Minor Snow solar term.
We hope these theoretical schemes can inspire your creativity, allowing you to create your own unique works in this cold yet beautiful season.