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CONTENTS

Unit Limit

SKU:U145

Description

Unit Limit is a limit switch sensor. When the switch bar is pressed, the digital single of the Unit would change from 3.3V to 0V, which may generate a limit signal to MCU or other peripherals. Applied for multiple mechanical equipments, to achieve limit protection.

Product Features

  • Contact limit switch
  • Long durability, upto 400K times lifetime
  • Multiple installation methods

Includes

  • 1x Unit limit
  • 1x HY2.0-4P Cable (20cm)

Application

  • Stop switch/Limit switch

Specification

Spec Parameter
Switch Bar Length 16mm
Mechnical Lifetime 400K Times
Power Supply DC 5V
Output Logical Signal DC 3.3V
Standby Current DC5V@2mA
Operation Current DC5V@3mA
Net Weight 6.3g
Gross Weight 11.4g
Product Size 37 * 24 * 9.5mm
Package Size 92 * 135mm

PinMap

  • Unit Limit
M5CORE - PORT B G36
UNIT Limit Input

Schematics

Module Size

module size

Example

Arduino


#include <M5Stack.h>

#define KEY_PIN 36 

void setup() {
    M5.begin();  
    M5.Lcd.setTextSize(4);
    M5.Lcd.print(("\n  UNIT-LIMIT\n  Example"));

    pinMode(KEY_PIN, INPUT_PULLUP);
}

void loop() {
    if (!digitalRead(KEY_PIN)) {
        M5.Lcd.setCursor(0, 130);
        M5.Lcd.print(("  Hit limit!"));
    } else {
        M5.Lcd.setCursor(0, 130);
        M5.Lcd.println(("            "));
    }
    delay(100);
}

UIFlow

UIFlow1.0 UIFlow1.0 Blockly limit Instructions for use
UIFlow1.0 Blockly limit Instructions for use
How to use Blockly limit on the UIFlow 1.0 graphical programming platform and related API instructions

Example

Function

  • Get switch status.