Ref: http://arduino-info.wikispaces.com/ArduinoPower
/* YourDuino Example: Relay Control 1.10
Handles "Relay is active-low" to assure
no relay activation from reset until
application is ready.
terry@yourduino.com */
/*-----( Import needed libraries )-----*/
/*-----( Declare Constants )-----*/
#define RELAY_ON 0
#define RELAY_OFF 1
/*-----( Declare objects )-----*/
/*-----( Declare Variables )-----*/
#define Relay_1 2 // Arduino Digital I/O pin number
#define Relay_2 3
#define Relay_3 4
#define Relay_4 5
void setup() /****** SETUP: RUNS ONCE ******/
{
//-------( Initialize Pins so relays are inactive at reset)----
digitalWrite(Relay_1, RELAY_OFF);
digitalWrite(Relay_2, RELAY_OFF);
digitalWrite(Relay_3, RELAY_OFF);
digitalWrite(Relay_4, RELAY_OFF);
//---( THEN set pins as outputs )----
pinMode(Relay_1, OUTPUT);
pinMode(Relay_2, OUTPUT);
pinMode(Relay_3, OUTPUT);
pinMode(Relay_4, OUTPUT);
delay(4000); //Check that all relays are inactive at Reset
}//--(end setup )---
void loop() /****** LOOP: RUNS CONSTANTLY ******/
{
//---( Turn all 4 relays ON in sequence)---
digitalWrite(Relay_1, RELAY_ON);// set the Relay ON
delay(1000); // wait for a second
digitalWrite(Relay_2, RELAY_ON);// set the Relay ON
delay(1000); // wait for a second
digitalWrite(Relay_3, RELAY_ON);// set the Relay ON
delay(1000); // wait for a second
digitalWrite(Relay_4, RELAY_ON);// set the Relay ON
delay(4000); // wait see all relays ON
//---( Turn all 4 relays OFF in sequence)---
digitalWrite(Relay_1, RELAY_OFF);// set the Relay OFF
delay(1000); // wait for a second
digitalWrite(Relay_2, RELAY_OFF);// set the Relay OFF
delay(1000); // wait for a second
digitalWrite(Relay_3, RELAY_OFF);// set the Relay OFF
delay(1000); // wait for a second
digitalWrite(Relay_4, RELAY_OFF);// set the Relay OFF
delay(4000); // wait see all relays OFF
}//--(end main loop )---
//*********( THE END )***********
Howto fade a motor or LED
/* YourDuino PWM Power Example
"analogWrite" outputs a Pulse Width Modulated signal
terry@yourduino.com
Fades an LED or Lamp up and down
NOTE: analogWrite values are from 0..255
*/
/*-----( Import needed libraries )-----*/
/*-----( Declare Constants )-----*/
#define ledPin 9 // LED connected to digital pin 9
/*-----( Declare objects )-----*/
/*-----( Declare Variables )-----*/
int fadeValue; //Value to be sent to PWM
void setup() /****** SETUP: RUNS ONCE ******/
{
// (Not Used)
}//--(end setup )---
void loop() /****** LOOP: RUNS CONSTANTLY ******/
{
// fade up min to max
for(fadeValue = 0 ; fadeValue <= 255; fadeValue +=5)
{
analogWrite(ledPin, fadeValue);
delay(50);
} // End Fade Up
delay(2000); // Hold 2 seconds at max brightness
// fade out max to min
for(fadeValue = 255 ; fadeValue >= 0; fadeValue -=5)
{
analogWrite(ledPin, fadeValue);
delay(50);
}
delay(2000); // Hold 2 seconds at off
}//--(end main loop )---
/*-----( Declare User-written Functions )-----*/
//None
//*********( THE END )***********
