KY-036 Metal Touch Interface Sensor Module for Arduino

Product Description

The KY-036 Metal Touch Sensor features a distinct metal pin protruding from the front of the PCB which acts as the primary sensing element. When a conductive object (like a finger) touches this pin, the Darlington transistor amplifies the signal, which is then processed by an LM393 comparator. The module provides a Digital Output (D0) that switches from LOW to HIGH upon contact, and an Analog Output (A0) that provides a real-time voltage level corresponding to the intensity of the touch or the proximity of the conductive body. This dual-output nature allows for both simple "on/off" logic and complex signal processing.

Key Features

• Dual Output Mode: Simultaneously provides digital trigger signals and analog intensity data.

• Adjustable Threshold: The onboard blue multi-turn potentiometer allows you to fine-tune the touch sensitivity.

• Visual Indicators: Features two LEDs—one for power status and another that lights up when a touch is detected.

• Non-Contact Potential: At high sensitivity, it can act as a proximity sensor for large metal masses without direct physical contact.

• Compact Integration: Standard 4-pin header (VCC, GND, D0, A0) for easy wiring with jumpers.

Technical Details

• Pinout: 1. AO: Analog output voltage. 2. GND: Ground. 3. VCC: 3.3V-5V Power. 4. DO: Digital output (TTL level).

• Control: 10K Ohm Potentiometer for sensitivity adjustment.

• Mounting: Single 3mm screw hole for secure mechanical fastening.