Demo:


Review:


What is Button?



A button that is pushed to operate an electrical device.


Materials Need:


1 x gizDuino PLUS ATmega644P Starter kit

1 x Clear LED 5mm

1 x Green LED 5mm

2 x 560 Ohms Resistor/p>

2 x 10k Ohms Resistor

2 x Tact Switch Button 4pins or 2pins

1 x USB Cable

8 x 1pin Jumper Wire (male-male)


Schematic Diagram:




Wiring Connection:


LED:

Digital pin 11/10 --> (+) Anode LED

(-) Cathode --> 560 ohms --> Ground

Button:

Digital pin 3/2 --> Button pin 1--> 560 ohms --> Ground

Button pin 2 --> Ground



Codes:


/*
"GizDuino Starter Kit"
LATCH AND SWITCH BUTTON sample codes
STEP 1: Construct the circuit of GizDuino Latch and Switch button.
STEP 2: Connect the USB Cable to your computer.
STEP 3: Open the Arduino IDE.
STEP 4: Open the Latch and Switch Button Sample code from GizDuino Starter kit code.
STEP 5: Then, click Upload.
This sample code has two function button.
Button 1 : Latch switch, once you press the button it will
stay turn ON, press it again it will OFF.
Button 2 : Button switch, once you press it will turn ON and
when you realesed turn OFF.
*/
//givenname for digtal pins.
int ledPin1 = 10;
int ledPin2 = 11;
int switchPin1 = 2;
int switchPin2 = 3;
int switch_state = 0;
int switch_state1 = 0;
int LEDstate = 0;
// the setting up of pins.
void setup(){
// initialize the digital pins as an output.
pinMode(ledPin1, OUTPUT);
pinMode(ledPin2, OUTPUT);
pinMode(switchPin1, INPUT);
pinMode(switchPin2, INPUT);
digitalWrite(ledPin1, LOW);
}
// the loop is where your program runs repeatedly.
void loop(){
switch_state = digitalRead(switchPin1); // reading the digital pins
switch_state1 = digitalRead(switchPin2);
if (switch_state == 0) { // button pressed
while (digitalRead(switchPin1) == 0);
switch (LEDstate) {
case 0: // if LED is off, turn on
digitalWrite(ledPin1, HIGH);
LEDstate = 1;
break;
case 1: // if LED is on, turn off
digitalWrite(ledPin1, LOW);
LEDstate = 0;
break;
}
}
if (switch_state1 == 0) { // if button is LOW, LED is ON
digitalWrite (ledPin2, HIGH);
}
if (switch_state1 == 1) { // if button is HIGH, LED is OFF
digitalWrite (ledPin2, LOW);
}
}
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