Modified Code

         Today I worked on the code that I uploaded yesterday.  There are still a few things that I would like to fix such as not allowing the user to press the same button sequentially.   I would like to add this feature because I don't want the carriage to be told to move in a direction when it's already at the edge.  Otherwise the carriage will be pushing against the wall.  
          The code I wrote today is the following:

	#include <Servo.h>
	Servo cup;
	Servo cart;
	int potpin = 0;
	int val;
	int inPinR = 4;
	int inPinL = 3;
	int ButtonR = 0;
	int ButtonL = 0;
	void setup()
	{
	cup.attach(9);
	cart.attach(6);
	pinMode(inPinR, INPUT);
	pinMode(inPinL, INPUT);
	Serial.begin(9600);
	}
	void loop()
	{
	ButtonR = digitalRead(inPinR);
	ButtonL = digitalRead(inPinL);
	if ((ButtonR == LOW)&&(ButtonL == HIGH))
	{ cart.write(0); // if the left button is pressed the cart will move
	delay(2100);} // to the left for 2100 ms
	if ((ButtonL == LOW) && (ButtonR == HIGH))
	{ cart.write(180); // if the right button is pressed the cart will
	delay(2100);} // move to the left for 2100 ms
	if ((ButtonL == LOW) && (ButtonR ==LOW))
	{ cart.write(94);} // cart wont run if both buttons pressed
	if ((ButtonL == HIGH) && (ButtonR == HIGH))
	{ cart.write(94);} // cart wont run if neiter button is pressed
	val = analogRead(potpin);
	val = map(val, 0, 1023, 0, 179);
	if (val <= 70) // if the scaled pot value is less than or
	// equal to 70 the servo cup will assigned the value 0
	{
	cup.write(0); // when assigned 0 the cup goes down
	}
	if ((val >70) && (val < 110)) // if the value is between 71 and
	// 109 the cup will be assigned the value 94
	// 90 should stop the motor however it would continue to go down
	// at a very slow rate
	{
	cup.write(94); // cup stops
	}
	if (val >= 110) // if the value is greater than or equal to 110
	// the servo cup will be set to 180
	{
	cup.write(180);
	}
	Serial.print(val);
	Serial.print("\n");
	delay(15);
	}

view raw gistfile1.txt hosted with ❤ by GitHub

Here is a video of the code working.  At the beginning i'm showing that the servo is attached to pin 6 and I lay the deodorant stick down and press the buttons.  This is what the cold will be doing to the carriage the only difference is that the carriage is on a track and will go straight.   The second part of the video is me showing the servo is attached to pin 9 and how using a potentiometer one can raise and lower the cup.

-Mike Law