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BOB LCD Control Panel

The BOB makes a pretty good Arduino shield for an LCD Control Panel with switches, and ribbon cable connections to stepper motor drivers, space for a relay driver, etc.. Video of the build:

For the LCD panel, Install

For the switches, Install

For Motor Drivers (optional hack for attaching PMinMO compatible stepper or other drivers)

BOBLCDPanel.ino


#include <LiquidCrystal.h>

// See this page for the BOB Control Panel build
// http://www.massmind.org/techref/arduino-bob-panel.htm

#define LCD_COLS 16
#define LCD_ROWS 2

//#define MOTORS

#define S1_PIN 10
#define S2_PIN 11
#define S3_PIN 12
#define S4_PIN 13

#define X_DIR 6
#define X_STEP 2
#define Y_DIR 7
#define Y_STEP 3 // Shared with LCD RS
#define Z_DIR 8
#define Z_STEP 4
#define A_DIR 9
#define A_STEP 5 // Shared with LCD /E

// initialize the library with the numbers of the interface pins
LiquidCrystal lcd(3, 5, 6, 7, 8, 9);
//use this line instead if you patched C4 to JP4 (Z-STEP) instead.
//LiquidCrystal lcd(4, 5, 6, 7, 8, 9);

int switch_state() {
  int i=0;
  if (0==digitalRead(S1_PIN)) i+=1;
  if (0==digitalRead(S2_PIN)) i+=2;
  if (0==digitalRead(S3_PIN)) i+=4;
  if (0==digitalRead(S4_PIN)) i+=8;
  return i;
  }

void setup() {
  // setup the switch pins, with pullups
  pinMode(S1_PIN, INPUT_PULLUP);
  pinMode(S2_PIN, INPUT_PULLUP);
  pinMode(S3_PIN, INPUT_PULLUP);
  pinMode(S4_PIN, INPUT_PULLUP);

#ifdef MOTORS
  // setup the PWM or Step outputs
  pinMode(X_STEP, OUTPUT);
  pinMode(Y_STEP, OUTPUT);
  pinMode(Z_STEP, OUTPUT);
  pinMode(A_STEP, OUTPUT);
  // setup the Direction outputs
  pinMode(X_DIR, OUTPUT);
  pinMode(Y_DIR, OUTPUT);
  pinMode(Z_DIR, OUTPUT);
  pinMode(A_DIR, OUTPUT);
  // setup the A2 analog pin as an enable output.
  pinMode(A2, OUTPUT);
#endif

  // setup the LCD's number of columns and rows: 
  lcd.begin(LCD_COLS, LCD_ROWS);
  }

void loop() {
  // Print a message to the LCD.
  lcd.setCursor(0, 0);
  lcd.print("Hello World!    ");
  lcd.setCursor(0, 1);
  lcd.print("version 1.00    ");
  int s = switch_state();
  if (0 != s) { // switch was pushed
    lcd.setCursor(13, 1);
    lcd.print(s);
#ifdef MOTORS
    lcd.setCursor(0, 0);
    lcd.print("Motor running");
    lcd.print(s*(255/15));
    digitalWrite(A2,HIGH); //enable the motors.
    while (0 != s) {
      s = switch_state();
      analogWrite(X_DIR, s*(255/15)); //run the motor on X 0 to 255
      }
    digitalWrite(A2,LOW); //disable the motors.
#endif
    }
  delay(1000);
  lcd.setCursor(0, 0);
  lcd.print("                ");
  for(int i=0; i<LCD_COLS; i++) {
    lcd.setCursor(i, 0); //char i of line 0
    if ( i>10 ) lcd.print(i / 10); //divide by 10 gives upper digit, 
    //no decimal because int
    lcd.setCursor(i, 1); //char i of line 1
    lcd.print(i % 10); //modulo 10 gives lower digit
    delay(10);
    }
  delay(500);
  }



file: /Techref/arduino-bob-panel.htm, 4KB, , updated: 2017/3/24 15:41, local time: 2024/10/14 10:20,
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