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.

Features

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

Includes

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

Applications

Stop switch/Limit switch

Specifications

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

Model Size

Softwares

Arduino

UNIT Limit Example


#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 Unit limit Docs

How to use Unit limit and related API instructions in the UIFlow1.0

Softwares

Function

Get switch status.