Magic LED Lighting PWM Control Sensor Module

Description

The Magic Light Cup Sensor Module (commonly known as the KY-027) is an interactive sensor pair used to create “fluid” lighting illusions. [1, 2]

• How it works: Each board contains an LED and a mercury tilt switch. When you tilt or move the module, the switch triggers the microcontroller (like Arduino or Raspberry Pi) to adjust the LED brightness using Pulse Width Modulation (PWM). [1, 2]
• Visual Effect: By shifting brightness between the two modules, it creates the illusion that light is “pouring” or “transferring” from one module to the other (like liquid in a cup). [1, 2]
• Typical Use Cases: Ideal for interactive art displays, liquid-transfer simulations, robotics, and novelty lighting projects. [1, 2, 3, 4]