/*Liquid Tree Project Code*Author: JiaYi Lin *date: 5 Nov 2008*Liquid Tree Project was created in the course Ambient Visualization with *Devices in Semester 2, 2008 at the Faculty of Architecture, Design *Science and Planning, University of Sydney **The code is based on the Stepper Unipolar advanced example on the *Arduino website http://www.arduino.cc/en/Tutorial/StepperUnipolar**The highlight (Orange * -------------------------* Stepper Unipolar Advanced** (cleft) 2005 DojoDave for K3* http://www.0j0.org | http://arduino.berlios.de* @author: David Cuartielles* @date: 20 Oct. 2005*/
int ledPin01 = 12; // choose
the pin for the LED
int ledPin02 = 13;
int inPin01 = 3; // choose the input pin (for a
pushbutton)
int inPin02 = 2; // choose the input pin (for a
pushbutton02, motor Backward)
int motorPins[] = {8, 9, 10, 11};
int count = 0;
int count2 =
0;
int motorPins02[] = {4, 5,
6, 7};
int delayTime
= 500;
int delayTime02 = 500;
int val_Switch
= 0; // variable
for reading the pin status
int val_Switch_back
= 0;
int val
= 0; //variable for reading the pot status
int val02 = 1;
void setup() {
Serial.begin(9600);
pinMode(ledPin01, OUTPUT);
// declare LED as output
pinMode(ledPin02, OUTPUT);
pinMode(inPin01, INPUT); // declare pushbutton as
input
pinMode(inPin02, INPUT);
for (count = 0;
count < 4; count++) {
pinMode(motorPins[count], OUTPUT);
}
for (count = 0;
count < 4; count++) {
pinMode(motorPins02[count],
OUTPUT);
}
}
void moveForward() {
if ((count2 ==
0) || (count2 == 1)) {
count2
= 16;
}
count2>>=1;
for
(count = 3; count >= 0; count--) {
digitalWrite(motorPins[count], count2>>count&0x01);
}
delay(delayTime);
}
void moveBackward()
{
if
((count2 == 0) || (count2 == 1)) {
count2
= 16;
}
count2>>=1;
for
(count = 3; count >= 0; count--) {
digitalWrite(motorPins[3 - count], count2>>count&0x01);
}
delay(delayTime);
}
void moveForward02() {
if ((count2 ==
0) || (count2 == 1)) {
count2 = 16;
}
count2>>=1;
for (count = 3;
count >= 0; count--) {
digitalWrite(motorPins02[count],
count2>>count&0x01);
}
delay(delayTime02);
}
void moveBackward02() {
if ((count2 ==
0) || (count2 == 1)) {
count2 = 16;
}
count2>>=1;
for (count = 3;
count >= 0; count--) {
digitalWrite(motorPins02[3 -
count], count2>>count&0x01);
}
delay(delayTime02);
}
void loop(){
val_Switch
= digitalRead(inPin01); //
read input value
val_Switch_back
= digitalRead(inPin02);
val = analogRead(0);
val02 = analogRead(1);
if (val_Switch == HIGH) {
// check if the input is HIGH (button released)
digitalWrite(ledPin01,
LOW); // turn LED OFF
digitalWrite(ledPin02,
HIGH);
if
(val_Switch_back == LOW) {
delayTime = 20;
moveBackward();
}
else
{
delayTime = 60000UL;
}
if
(val > 50) {
// move faster the higher
the value from the potentiometer
delayTime = 2048 - 1024 * val / 512 + 1;
moveForward();
}
else
if (val< 50){
delayTime = 60000UL;
}
}
else {
digitalWrite(ledPin01,
HIGH); // turn
digitalWrite(ledPin02, LOW);
if
(val_Switch_back == LOW) {
delayTime02 = 20;
moveBackward02();
}
else
{
delayTime02 =
60000UL;
}
if
(val > 50){
delayTime02 = 2048 - 1024 * val / 512 + 1;
moveForward02();
}
else
if (val< 50){
delayTime02 = 60000UL;
}
}
}