Magic Cup Tilt Switch Module KY027

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Magic Cup Tilt Switch Module KY027 The KY‑027 Magic Cup Tilt Switch Module integrates a mercury tilt switch, LED, 10 kΩ series resistor, and 4-pin male header on a small PCB (approx. 18.5×14 mm). When the module is tilted or vibrated, the internal mercury switch closes, activating the onboard LED and authorizing a digital state change on the “S” output pin. This trigger can be forwarded to microcontrollers like Arduino, ESP32, Raspberry Pi, or Pico for programmable interaction. Features Built-in mercury tilt switch detects motion or orientation change. Onboard LED illuminates when tilt switch closes. 10 kΩ resistor pre‑installed for power usage compatibility. Signal output (“S”) pin reflects tilt state digitally. LED control input (“L”) allows PWM brightness control. Supports both 3.3 V and 5 V systems with required series resistor (120 Ω for 3.3 V, 220 Ω for 5 V). Low-power standby; lightweight (~2 g) and compact footprint (36 × 15 × 14 mm). Specifications Parameter Value Operating Voltage 3.3 V – 5.5 V Logic High Pulled to Vcc Logic Low Pulled to GND LED Voltage ~1.9 V LED Current ~20 mA Series Resistor 10 kΩ (onboard) PCB Dimensions 19 mm × 14 mm Weight ~2 g Interface Pins GND, VCC, S (signal), L (LED control) Compatible with Arduino, ESP32, Raspberry Pi, Micro, Pico PINOUT ‘G’ / ‘–’ = Ground ‘+’ = Vcc (3.3 or 5V to match uControllers) S = Output of the tilt switch. Connects to a digital input pin on uC. Active LOW L = Input to drive LED. Connects to a digital output pin on uC. Active HIGH Applications “Magic light cup” interactive effects: two modules controlling each other’s LED brightness via tilt and PWM. Motion or vibration-triggered lighting or status indication. Simple tilt alarm or tilt-detection circuit. Input device for interactive displays, toys, and art installations. Reaction-based IoT prototypes and sensory feedback systems. Package Contents 1x Magic Cup Tilt Switch Module KY027 (with LED, tilt switch, and pin header). Documents Example Arduino Code .