3D Printer Mechanical Endstop Switch with Cable
Limit Switch Module for CNC & 3D Printers
The Mechanical Endstop Switch is a reliable limit switch module designed for 3D printers, CNC machines, and Arduinobased motion control systems. This complete kit includes the micro switch with mounting bracket and prewired cable, providing accurate homing and limit detection for RAMPS 1.4 and other controller boards.
Mechanical micro switch with mounting bracket for easy installation
Includes pre-wired cable for direct connection to RAMPS 1.4 or Arduino
Handle with care - mechanical switches have physical contact life limits
Technical Specifications
| Parameter | Value |
|---|
| Switch Type | Mechanical SPDT Micro Switch |
| Actuator Type | Lever / Roller (depends on model) |
| Operating Voltage | 5V - 24V DC |
| Current Rating | 0.5A - 1A |
| Mounting | 2 x M3 mounting holes |
| Cable Length | ~1m |
| Connector | 3-pin Dupont |
| Operating Temp | -25°C ~ 80°C |
| Mechanical Life | 1,000,000 cycles |
| Electrical Life | 100,000 cycles |
| Actuation Force | ~50-100g |
= Key Features =
Complete Kit - Switch, bracket, and cable included
Reliable Detection - Mechanical switch for positive feel
PreWired Cable Ready to connect to controller boards
Standard Mounting - M3 screw holes for secure installation
Long Life - 1,000,000 mechanical cycles
Versatile Use - Works with 3D printers, CNC, and Arduino
Simple Interface - NO/NC/COM contacts for flexible wiring
Compact Size - Fits most 3D printer and CNC frames
= Applications =
- 3D printer axis homing and limit detection
- CNC machine limit switches
- Arduino and RAMPS 1.4 board integration
- RepRap and DIY printer projects
- Motion control and automation
- Endstop for X, Y, Z axes
- Position sensing and edge detection
Wiring Guide
| Endstop Pin | RAMPS 1.4 Pin | Description |
|---|
| S (Signal) | SIG | Signal output |
| + (VCC) | +5V | Power supply |
| - (GND) | GND | Ground connection |
> The cable is preterminated with 3pin Dupont connector
COM connects to GND, NO connects to Signal pin
Ensure correct polarity to avoid damage
Endstop Wiring Configurations
# Normally Open (NO) Configuration
- COM: Connect to GND
- NO: Connect to Signal pin
- Trigger when switch is pressed
# Normally Closed (NC) Configuration
- COM: Connect to GND
- NC: Connect to Signal pin
- Triggers when switch is released
Most 3D printers use NO configuration
NC provides failsafe detection if wire breaks
Installation Guide
- Mount endstop using M3 screws
- Connect cable to RAMPS 1.4 or controller
- Configure firmware for endstop type
- Test by manually triggering the switch
- Verify with M119 command (Marlin firmware)
Position switch so it triggers before mechanical limit
Use M119 to check endstop status in Marlin
Ensure switch is aligned perpendicular to axis movement
## Marlin Configuration (Example)
#define USEXMINPLUG
#define USEYMINPLUG
#define USEZMINPLUG
Enable endstop pins for your axis
Set ENDSTOPPULLUP to use internal pull-up resistors
Why Choose This Endstop?
Complete kit with switch, bracket, and cable
Reliable mechanical detection
Simple installation with pre-wired cable
Standard mounting for 3D printers
Proven design for RAMPS 1.4
Affordable and dependable
√ Compatible with RAMPS 1.4, MKS, Arduino
√ Works with Marlin, Repetier, and GRBL firmware
√ Prewired cable for plugand-play
√ Durable construction
√ Easy to replace and maintain
Safety Precautions
Do not exceed voltage/current ratings
Ensure switch is mounted securely
Check for mechanical binding before operation
Protect from moisture and debris
Use proper strain relief on cables
Regular maintenance extends switch life
Consider optical or inductive sensors for high-cycle applications
What's Included
- Mechanical Endstop Switch
- Mounting Bracket
- Pre-wired Cable (~1m)
- Mounting Screws
The Mechanical Endstop Switch provides reliable limit detection for your 3D printer or CNC machine. Complete with switch, bracket, and cable, it's ready to install for accurate axis homing and limit protection.
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