Human Body Touch Sensor Module KY-036

Human Body Touch Sensor Module KY-036

Sensors
DET586
Part.No: KY-036
€2.50
In Stock
Immediate Dispatch
KY-036 Human Body Touch Sensor Module with LM393 comparator, 5V DC operation, single-channel output and adjustable sensitivity — ideal for Arduino-based touch detection projects.

 

The KY-036 Human Body Touch Sensor Module (MPN: KY-036) is a compact capacitive-style touch detection module built around the LM393 dual comparator IC. Operating at 5V DC, it outputs a single-channel digital signal that goes LOW when human touch is detected on the brass sensing element — making it straightforward to integrate into any microcontroller project that needs a simple, reliable touch trigger.

Key Features

  • Main Chip: LM393 — industry-standard dual comparator ensures stable, noise-resistant signal output → reliable touch detection even in electrically noisy environments
  • Working Voltage: 5V DC — directly compatible with Arduino 5V logic without any level shifting → plug-and-play simplicity
  • Single-Channel Digital Output — outputs LOW signal on touch detection → easy to read with a single digital pin
  • Adjustable Sensitivity — on-board potentiometer lets you fine-tune the detection threshold → adapts to different use cases and environments
  • Brass Touch Element — durable, corrosion-resistant sensing surface → long service life
  • Mounting Hole — fixed bolt hole included → secure installation in enclosures or panels

Pinout & Wiring

PINSymbolDescription
1GNDGround — connect to Arduino GND
2VCCPower supply — connect to Arduino 5V
3DODigital Output — LOW when touch detected; connect to a digital input pin

Wiring note: Connect VCC to 5V, GND to GND, and DO to any digital input pin (e.g., D2) on your Arduino. Read the pin state in your sketch — a LOW value indicates touch. Adjust the on-board potentiometer to set sensitivity.

Compatibility

  • Arduino UNO / Nano / Mega: Fully compatible — 5V power supply and 5V-tolerant digital I/O match the module's requirements directly.
  • ESP32 / Raspberry Pi (3.3V logic): Requires a logic level shifter on the DO line, as this module operates at 5V logic.

Typical Applications

  • Touch-activated alarms — trigger a buzzer or LED when someone touches a surface, ideal for anti-tamper or alert systems.
  • Capacitive touch buttons — replace mechanical buttons in DIY panels or interactive displays.
  • Smart home control — touch-sensitive light switches or appliance control with Arduino.
  • Educational projects — learn about comparator circuits and digital signal output in electronics courses.
  • Interactive art installations — detect human presence or touch to trigger animations or sounds.

Technical Specifications

SpecificationValue
InterfaceDigital Output (Single Channel)
Working Voltage5V DC
Output SignalLOW (active) on touch detection
Main ChipLM393
SensitivityAdjustable (on-board potentiometer)
MaterialPCB + Brass
Dimensions43 × 16 × 15 mm
Weight3 g
ColorBlack + Blue
MPNKY-036

FAQ

Q: Does the KY-036 work directly with Arduino UNO without extra components?
A: Yes. Connect VCC to 5V, GND to GND, and DO to a digital pin. No additional components are needed for basic operation.

Q: What does the on-board potentiometer do?
A: It adjusts the comparator threshold of the LM393, allowing you to set how sensitive the module is to touch — useful for filtering out false triggers from environmental interference.

Package Contents: 1 × KY-036 Human Body Touch Sensor Module
⚠ Note: This module operates at 5V logic. Do not connect directly to 3.3V systems (ESP32, Raspberry Pi) without a logic level converter on the output line.
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