So i am trying to control a motors speed using PWM (running through a transistor). I know how to make that happen but i am unsure how to use a touch screen to control the motor, I have one of the test codes that is a touch pad 0-9 with enter and clear. I was wondering if there was a way that i can punch the number in push enter and have the motor run at that speed(starting with just 0-255) The touch screen is 3.2LCD TFT Touch Screen SD Reader http://www.ebay.com/itm/SainSmart-Mega2560-3-2-TFT-LCD-Shield-Touch-Screen-SD-Reader-4-Arduino-2560-/280930557613?pt=LH_DefaultDomain_0&hash;=item4168c41ead The code is // ITDB02_Touch_ButtonTest (C)2010 Henning Karlsen // web: http://www.henningkarlsen.com/electronics // Modified to work with UTFT on Mega w/Arduino 1.0.1 (C)2012 Otmar Ebenhoech, // // This program is a quick demo of how create and use buttons. // // This program requires the ITDB02_Graph library (8bit mode) // or ITDB02_Graph16 (16bit mode). // // It is assumed that the ITDB02 module is connected to a // ITDB02 Shield, a ITDB02 Mega Shield or that you know how // to change the pin numbers in the setup. // #include #include // Declare which fonts we will be using extern uint8_t BigFont[]; // Uncomment the next line for Arduino 2009/Uno //UTFT myGLCD(ITDB32S,19,18,17,16); // Remember to change the model parameter to suit your display module! //ITDB02_Touch myTouch(15,10,14,9,8); // Uncomment the next line for Arduino Mega UTFT myGLCD(ITDB32S,38,39,40,41); // Remember to change the model parameter to suit your display module! ITDB02_Touch myTouch(6,5,4,3,2); //// //// //// ////THIUS IS WHAT I ADDED ETK int motor = 9; //// //// //// //// int x, y; char stCurrent[20]=""; int stCurrentLen=0; char stLast[20]=""; void setup() {//// //// //// //// tHIS IS WHAT I ADDED ETK pinMode (motor, OUTPUT); //// //// //// //// // Initial setup myGLCD.InitLCD(LANDSCAPE); myGLCD.clrScr(); myTouch.InitTouch(LANDSCAPE); myTouch.setPrecision(PREC_MEDIUM); myGLCD.setFont(BigFont); myGLCD.setBackColor(0, 0, 255); // Draw the upper row of buttons for (x=0; x<5; x++) { myGLCD.setColor(0, 0, 255); myGLCD.fillRoundRect (10+(x*60), 10, 60+(x*60), 60); myGLCD.setColor(255, 255, 255); myGLCD.drawRoundRect (10+(x*60), 10, 60+(x*60), 60); myGLCD.printNumI(x+1, 27+(x*60), 27); } // Draw the center row of buttons for (x=0; x<5; x++) { myGLCD.setColor(0, 0, 255); myGLCD.fillRoundRect (10+(x*60), 70, 60+(x*60), 120); myGLCD.setColor(255, 255, 255); myGLCD.drawRoundRect (10+(x*60), 70, 60+(x*60), 120); if (x<4) myGLCD.printNumI(x+6, 27+(x*60), 87); } myGLCD.print("0", 267, 87); // Draw the lower row of buttons myGLCD.setColor(0, 0, 255); myGLCD.fillRoundRect (10, 130, 150, 180); myGLCD.setColor(255, 255, 255); myGLCD.drawRoundRect (10, 130, 150, 180); myGLCD.print("Clear", 40, 147); myGLCD.setColor(0, 0, 255); myGLCD.fillRoundRect (160, 130, 300, 180); myGLCD.setColor(255, 255, 255); myGLCD.drawRoundRect (160, 130, 300, 180); myGLCD.print("Enter", 190, 147); myGLCD.setBackColor (0, 0, 0); } void updateStr(int val) { if (stCurrentLen<20) { stCurrent[stCurrentLen]=val; stCurrent[stCurrentLen+1]='\0'; stCurrentLen++; myGLCD.setColor(0, 255, 0); myGLCD.print(stCurrent, LEFT, 224); } else { myGLCD.setColor(255, 0, 0); myGLCD.print("BUFFER FULL!", CENTER, 192); delay(500); myGLCD.print(" ", CENTER, 192); delay(500); myGLCD.print("BUFFER FULL!", CENTER, 192); delay(500); myGLCD.print(" ", CENTER, 192); myGLCD.setColor(0, 255, 0); } } // Draw a red frame while a button is touched void waitForIt(int x1, int y1, int x2, int y2) { myGLCD.setColor(255, 0, 0); myGLCD.drawRoundRect (x1, y1, x2, y2); while (myTouch.dataAvailable()) myTouch.read(); myGLCD.setColor(255, 255, 255); myGLCD.drawRoundRect (x1, y1, x2, y2); } void loop() { while (true) { if (myTouch.dataAvailable()) { myTouch.read(); x=myTouch.getX(); y=myTouch.getY(); if ((y>=10) && (y<=60)) // Upper row { if ((x>=10) && (x<=60)) // Button: 1 { waitForIt(10, 10, 60, 60); updateStr('1'); } if ((x>=70) && (x<=120)) // Button: 2 { waitForIt(70, 10, 120, 60); updateStr('2'); } if ((x>=130) && (x<=180)) // Button: 3 { waitForIt(130, 10, 180, 60); updateStr('3'); } if ((x>=190) && (x<=240)) // Button: 4 { waitForIt(190, 10, 240, 60); updateStr('4'); } if ((x>=250) && (x<=300)) // Button: 5 { waitForIt(250, 10, 300, 60); updateStr('5'); } } if ((y>=70) && (y<=120)) // Center row { if ((x>=10) && (x<=60)) // Button: 6 { waitForIt(10, 70, 60, 120); updateStr('6'); } if ((x>=70) && (x<=120)) // Button: 7 { waitForIt(70, 70, 120, 120); updateStr('7'); } if ((x>=130) && (x<=180)) // Button: 8 { waitForIt(130, 70, 180, 120); updateStr('8'); } if ((x>=190) && (x<=240)) // Button: 9 { waitForIt(190, 70, 240, 120); updateStr('9'); } if ((x>=250) && (x<=300)) // Button: 0 { waitForIt(250, 70, 300, 120); updateStr('0'); } } if ((y>=130) && (y<=180)) // Upper row { if ((x>=10) && (x<=150)) // Button: Clear { waitForIt(10, 130, 150, 180); stCurrent[0]='\0'; stCurrentLen=0; myGLCD.setColor(0, 0, 0); myGLCD.fillRect(0, 224, 319, 239); } if ((x>=160) && (x<=300)) // Button: Enter { waitForIt(160, 130, 300, 180); if (stCurrentLen>0) { for (x=0; x { stLast[x]=stCurrent[x]; } stCurrent[0]='\0'; stCurrentLen=0; myGLCD.setColor(0, 0, 0); myGLCD.fillRect(0, 208, 319, 239); myGLCD.setColor(0, 255, 0); myGLCD.print(stLast, LEFT, 208); //// //// //// ////THIS IS WAHT I ADDED ETK analogWrite(motor,stLast); //// //// //// //// } else { myGLCD.setColor(255, 0, 0); myGLCD.print("BUFFER EMPTY", CENTER, 192); delay(500); myGLCD.print(" ", CENTER, 192); delay(500); myGLCD.print("BUFFER EMPTY", CENTER, 192); delay(500); myGLCD.print(" ", CENTER, 192); myGLCD.setColor(0, 255, 0); } } } } } } The stuff i added has these //// on top and bottom with a comment "THIS WAS ADDED ETK" the part that dont work is "analogWrite(motor,stLast);" and stLast is a char so it give me char to int error. And as you can tell i am no good at this so anything that can point me in the right direction would be greatly appreciated ETK
