Introduction: TILT SWITCH USING ARDUINO UNO R3
The tilt switch used here is a ball one with a metal ball inside. It is used to detect small angle of inclination.
Step 1: Components Required
Step 2: Principle
The principle is very simple. When the switch is tilted in a certain angle, the ball inside rolls down and touches the two contacts connected to the pins outside, thus triggering circuits. Otherwise the ball will stay away from the contacts, thus breaking the circuits.
Step 3: Schematic Diagram
Step 4: Procedures
Step1:
Build the circuit.
Step 2:
Download the code from https://github.com/primerobotics/Arduino
Step 3:
Upload the sketch to the Arduino Uno board. Click the Upload icon to upload the code to the control board.If "Done uploading" appears at
the bottom of the window, it means the sketch has been successfully uploaded.
Now, tilt the switch, and the LED attached to pin 13 on Arduino Uno board will light up.
Step 5: Code
/*****************************************/
const int ledPin = 13;//the led attach to
void setup()
{
pinMode(ledPin,OUTPUT);//initialize the ledPin as an output
pinMode(2,INPUT);//set pin2 as INPUT
digitalWrite(2, HIGH);//set pin2 as HIGH
}
/******************************************/
void loop()
{
int digitalVal = digitalRead(2);//Read the value of pin2
if(HIGH == digitalVal)//if tilt switch is not breakover
{
digitalWrite(ledPin,LOW);//turn the led off
}
else ////if tilt switch breakover
{
digitalWrite(ledPin,HIGH);//turn the led on
}
}
/**********************************************/
