Grove - Tilt Switch

From Wiki
Jump to: navigation, search

Introduction

The Grove-Tilt Switch is the equivalent of a button, and is used as a digital input. Inside the tilt switch is a pair of balls that make contact with the pins when the case is upright. Tilt the case over and the balls don't touch, thus not making a connection. It is wired to the SIG line, NC is not used on this Grove.


Tilt1.jpg


Feature

Grove Interface Easy to use Simple Grove module Specification

Item Min Typical Max Unit Voltage 4.75 5.0 5.25 V Connecting Angle 10° ~170° - Disconnect angle 190° ~350° - Electrical Life 100,000 Cycle Usage

With Arduino The SIG pin of the Grove - Tilt Switch output LOW normally. When the Tilt Switch is upright, a pair of balls inside the tilt switch will contact with the pins and the SIG pin will output HIGH.

The following sketch demonstrates a simple application of using the Tilt Switch and Grove - Button to control the led.

As the following picture indicates, the Tilt Switch is connected to digital port 5 of the Grove - Basic Shield and the Grove-Button to digital port 7. The LED is connected to digital port 2. The hardware installation is as follows:


Digitalv1.0b.jpg

Copy and paste code below to a new Arduino sketch. void setup() {

 pinMode(1, OUTPUT);
 pinMode(5, INPUT);
 pinMode(7, INPUT);

}

void loop() {

if (digitalRead(5)==HIGH)

 {
   digitalWrite(1, HIGH);
   delay(100);
   digitalWrite(1, LOW);
 }
 
 if (digitalRead(7)==HIGH)
 {
   digitalWrite(1, HIGH);
   delay(200);
   digitalWrite(1, LOW);
 } 

}

Upload the code, please click here if you do not know how to upload. Then the LED will light when you press the button or activate the tilt-switch. Have a try! Reference

The Operate angle of Grove-Tilt Switch as shown below:

Tilt Switch Operate.jpg

Note: The logo J1 in the Grove is as reference terminal.

With Raspberry Pi 1.You should have got a raspberry pi and a grovepi or grovepi+. 2.You should have completed configuring the development enviroment, otherwise follow here.

3.Connection

Plug Tilt_Switch into grovepi socket D3 by using a grove cable. 4.Navigate to the demos' directory:

  cd yourpath/GrovePi/Software/Python/

To see the code

  nano grovepi_tilt_switch.py   # "Ctrl+x" to exit #

import time import grovepi

  1. Connect the Grove Tilt Switch to digital port D3
  2. SIG,NC,VCC,GND

tilt_switch = 3

grovepi.pinMode(tilt_switch,"INPUT")

while True:

   try:
       print grovepi.digitalRead(tilt_switch)
       time.sleep(.5)
   except IOError:
       print "Error"

5.Run the demo.

  sudo python grove_tilt_switch.py

6.Result Put the sensor upright by one side, the SIG pin will output HIGH.

Grovepi tilt Switch 00.png


QQ截图20150605162544.jpg