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Pricelist: Retail Price (B2C) Pricelist
Mechanical Endstop Limit Switch with 3-Pin Cable

Mechanical Endstop Limit Switch with 3-Pin Cable

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SpecificationDetails
Switch TypeMechanical Microswitch
Operating Voltage3.3V to 5V DC
Connection3-Pin (VCC, GND, Signal)
Cable LengthApprox. 70cm
Mounting Holes2 x M3 Holes
Logic LevelHigh/Low Digital Output
CompatibilityRepRap, Creality, DIY CNC
Price
₹ 55.08 ₹ 55.08
(Tax included)

Product Description

The Mechanical Endstop Module is engineered for high-repetition accuracy and long service life. It utilizes a classic microswitch with a metal lever actuator that triggers a logic state change upon physical contact. The board features an onboard status LED that lights up when the switch is triggered, providing instant visual feedback for troubleshooting. Unlike optical endstops, mechanical switches are immune to ambient light interference and dust, making them highly reliable in the debris-heavy environments of 3D printing and milling.

Key Features

  • Plug-and-Play Design: Includes a 70cm 3-pin cable with standard 2.54mm pitch connectors for tool-less installation.

  • Integrated Logic: Features pull-up/pull-down resistors and a filtering capacitor to prevent "signal bouncing" and electrical noise.

  • Visual Diagnostics: The onboard LED allows you to verify switch functionality without checking the firmware console.

  • Robust Actuator: The spring-loaded metal lever ensures a consistent "click" and return, maintaining homing precision within fractions of a millimeter.

  • Easy Mounting: Two standard M3 mounting holes allow for easy attachment to 2020 aluminum extrusions or custom 3D-printed brackets.

Technical Details

  • Dimensions: 40mm x 16mm x 10mm (approx).

  • Switch Life: Rated for over 100,000 cycles.

  • Wiring Pinout: Red (VCC), Black (GND), Green/White (Signal)

Prototyping and Engineering Tips from Robogears

  • Normally Open vs. Closed: In most 3D printer firmwares (like Marlin), you must specify if your endstop is Normally Open (NO) or Normally Closed (NC). These modules are typically wired so the signal changes when pressed; ensure your Configuration.h file matches the physical behavior to avoid the printer trying to move "past" its physical limits.

  • Mounting Tension: When installing, ensure the switch is positioned so that the moving part hits the metal lever, not the plastic body of the switch. Hitting the plastic body can shatter the switch casing over time.

  • Cable Management: Use the long 70cm cable to route wires through drag chains or cable sleeves. Keep endstop wires separate from high-current motor wires where possible to prevent "EMI cross-talk," which can cause random "fake" endstop triggers during a print.

  • The "Homing" Test: Before running a full homing sequence, manually trigger the switch with your finger while the axis is moving slowly. If the motor doesn't stop, turn off the power immediately and check your wiring or firmware settings.

Package Includes

  • 1 x Mechanical Endstop Switch Module

  • 1 x 3-Pin Connecting Cable (70cm)

Disclaimer

Always verify the pinout of your control board before plugging in the cable. Incorrectly swapping VCC and GND can damage the microcontroller or the onboard LED.