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#include //U8g2 Library for the SSD1306 OLED #include #include //Define switch pins #define SW4 4 #define SW3 10 #define SW2 9 #define SW1 8 //Define debug LED Pin #define ledPin 13 //Define DRV8833 motor driver pins #define AIN1 5 #define AIN2 6 //Define Global Variables int Mode = 0; int Dtime; int Htime; int screenrotation = 0; unsigned long presstime = 0; // U8g2 Instance for OLED U8G2_SSD1306_128X32_UNIVISION_F_SW_I2C u8g2(U8G2_R2, /* clock=*/SCL, /* data=*/SDA, /* reset=*/U8X8_PIN_NONE); void setup() { //initialize pins pinMode(ledPin, OUTPUT); pinMode(SW1, INPUT_PULLUP); pinMode(SW2, INPUT_PULLUP); pinMode(SW3, INPUT_PULLUP); pinMode(SW4, INPUT_PULLUP); pinMode(AIN1, OUTPUT); pinMode(AIN2, OUTPUT); //set motor driver to off during startup digitalWrite(AIN1, LOW); digitalWrite(AIN2, LOW); //Get saved data from EEPROM Dtime = get_String(0, 1).toInt(); Htime = get_String(5, 6).toInt(); screenrotation = EEPROM.read(10); //initialize OLED and display the menu for first time u8g2.begin(); u8g2.setFlipMode(screenrotation); u8g2.clearBuffer(); menu(Mode); u8g2.sendBuffer(); } void menu(int n) { //Draw main UI u8g2.drawLine(0, 21, 128, 21); u8g2.drawLine(0, 22, 128, 22); u8g2.drawLine(0, 23, 128, 23); switch (n) { case 0: u8g2.setFont(u8g2_font_baby_tf); u8g2.setCursor(5, 18); u8g2.print("Dispense Time"); u8g2.drawDisc(32, 28, 3, U8G2_DRAW_ALL); u8g2.drawCircle(53, 28, 3, U8G2_DRAW_ALL); u8g2.drawCircle(75, 28, 3, U8G2_DRAW_ALL); u8g2.drawCircle(96, 28, 3, U8G2_DRAW_ALL); u8g2.setFont(u8g2_font_tenthinnerguys_tf); u8g2.setCursor(75, 18); u8g2.print(Dtime); u8g2.print("ms"); break; case 1: u8g2.setFont(u8g2_font_baby_tf); u8g2.setCursor(23, 14); u8g2.print("Continuous Dispense"); u8g2.drawCircle(32, 28, 3, U8G2_DRAW_ALL); u8g2.drawDisc(53, 28, 3, U8G2_DRAW_ALL); u8g2.drawCircle(75, 28, 3, U8G2_DRAW_ALL); u8g2.drawCircle(96, 28, 3, U8G2_DRAW_ALL); u8g2.drawBox(8, 8, 9, 9); u8g2.drawTriangle(110, 7, 110, 16, 118, 12); break; case 2: u8g2.setFont(u8g2_font_baby_tf); u8g2.setCursor(22, 14); u8g2.print(" Continuous Retract"); u8g2.drawCircle(32, 28, 3, U8G2_DRAW_ALL); u8g2.drawCircle(53, 28, 3, U8G2_DRAW_ALL); u8g2.drawDisc(75, 28, 3, U8G2_DRAW_ALL); u8g2.drawCircle(96, 28, 3, U8G2_DRAW_ALL); u8g2.drawBox(8, 8, 9, 9); u8g2.drawTriangle(110, 7, 110, 16, 118, 12); break; case 3: u8g2.setFont(u8g2_font_baby_tf); u8g2.setCursor(5, 18); u8g2.print("Retract Time"); u8g2.drawCircle(32, 28, 3, U8G2_DRAW_ALL); u8g2.drawCircle(53, 28, 3, U8G2_DRAW_ALL); u8g2.drawCircle(75, 28, 3, U8G2_DRAW_ALL); u8g2.drawDisc(96, 28, 3, U8G2_DRAW_ALL); u8g2.setFont(u8g2_font_tenthinnerguys_tf); u8g2.setCursor(75, 18); u8g2.print(Htime); u8g2.print("ms"); break; } } void Motor(int n) { //function to drive motor if (n == 0) { digitalWrite(AIN1, LOW); digitalWrite(AIN2, LOW); } else if (n == 1) { digitalWrite(AIN1, LOW); digitalWrite(AIN2, HIGH); } else if (n == 2) { digitalWrite(AIN1, HIGH); digitalWrite(AIN2, LOW); } } void MotorD() { Motor(1); delay(Dtime); Motor(0); } void MotorH() { Motor(2); delay(Htime); Motor(0); } void set_String(int a, int b, String str) { EEPROM.write(a, str.length()); for (int i = 0; i < str.length(); i++) { EEPROM.write(b + i, str[i]); } } String get_String(int a, int b) { String data = ""; for (int i = 0; i < EEPROM.read(a); i++) { data += char(EEPROM.read(b + i)); } return data; } void loop() { //check if mode button (SW2) is pressed if (digitalRead(SW2) == LOW) { presstime = millis(); delay(20); if (digitalRead(SW2) == LOW) { Mode++; if (Mode > 3) Mode = 0; digitalWrite(ledPin, HIGH); u8g2.clearBuffer(); menu(Mode); if (Mode == 1 or Mode == 2) u8g2.drawRFrame(5, 5, 15, 15, 5); u8g2.sendBuffer(); Motor(0); while (digitalRead(SW2) == LOW) { if (millis() - presstime > 3000) { //Check if the mode button is pressed for 3S. If then flip screen to 180 screenrotation = !screenrotation; EEPROM.write(10, screenrotation); u8g2.setFlipMode(screenrotation); u8g2.clearBuffer(); menu(Mode); if (Mode == 1 or Mode == 2) u8g2.drawRFrame(5, 5, 15, 15, 5); u8g2.sendBuffer(); Motor(0); delay(2000); } } digitalWrite(ledPin, LOW); } } //check if + and - buttons were pressed or not switch (Mode) { case 0: if (digitalRead(SW1) == LOW) { delay(20); if (digitalRead(SW1) == LOW) { Dtime -= 1; if (Dtime < 0) Dtime = 0; set_String(0, 1, String(Dtime)); digitalWrite(ledPin, HIGH); u8g2.clearBuffer(); menu(Mode); u8g2.sendBuffer(); Serial.println(Dtime); Serial.println(Htime); while (digitalRead(SW1) == LOW) ; digitalWrite(ledPin, LOW); } } if (digitalRead(SW3) == LOW) { delay(20); if (digitalRead(SW3) == LOW) { Dtime += 1; if (Dtime > 3000) Dtime = 3000; set_String(0, 1, String(Dtime)); digitalWrite(ledPin, HIGH); u8g2.clearBuffer(); menu(Mode); u8g2.sendBuffer(); Serial.println(Dtime); Serial.println(Htime); while (digitalRead(SW3) == LOW) ; digitalWrite(ledPin, LOW); } } break; case 1: if (digitalRead(SW1) == LOW) { delay(20); if (digitalRead(SW1) == LOW) { digitalWrite(ledPin, HIGH); u8g2.clearBuffer(); menu(Mode); u8g2.drawRFrame(5, 5, 15, 15, 5); u8g2.sendBuffer(); Motor(0); while (digitalRead(SW1) == LOW) ; digitalWrite(ledPin, LOW); } } if (digitalRead(SW3) == LOW) { delay(20); if (digitalRead(SW3) == LOW) { u8g2.clearBuffer(); menu(Mode); u8g2.drawRFrame(106, 5, 15, 15, 5); u8g2.sendBuffer(); Motor(1); while (digitalRead(SW3) == LOW) ; digitalWrite(ledPin, LOW); } } break; case 2: if (digitalRead(SW1) == LOW) { delay(20); if (digitalRead(SW1) == LOW) { digitalWrite(ledPin, HIGH); u8g2.clearBuffer(); menu(Mode); u8g2.drawRFrame(5, 5, 15, 15, 5); u8g2.sendBuffer(); Motor(0); while (digitalRead(SW1) == LOW) ; digitalWrite(ledPin, LOW); } } if (digitalRead(SW3) == LOW) { delay(20); if (digitalRead(SW3) == LOW) { u8g2.clearBuffer(); menu(Mode); u8g2.drawRFrame(106, 5, 15, 15, 5); u8g2.sendBuffer(); Motor(2); while (digitalRead(SW3) == LOW) ; digitalWrite(ledPin, LOW); } } break; case 3: if (digitalRead(SW1) == LOW) { delay(20); if (digitalRead(SW1) == LOW) { Htime -= 1; if (Htime < 0) Htime = 0; set_String(5, 6, String(Htime)); digitalWrite(ledPin, HIGH); u8g2.clearBuffer(); menu(Mode); u8g2.sendBuffer(); Serial.println(Dtime); Serial.println(Htime); while (digitalRead(SW1) == LOW) ; digitalWrite(ledPin, LOW); } } if (digitalRead(SW3) == LOW) { delay(20); if (digitalRead(SW3) == LOW) { Htime += 1; if (Htime > 1000) Htime = 1000; set_String(5, 6, String(Htime)); digitalWrite(ledPin, HIGH); u8g2.clearBuffer(); menu(Mode); u8g2.sendBuffer(); Serial.println(Dtime); Serial.println(Htime); while (digitalRead(SW3) == LOW) ; digitalWrite(ledPin, LOW); } } break; } //Check if dispense button is pressed or not.If pressed start dispensing as per the set speed if (digitalRead(SW4) == LOW) { delay(20); if (digitalRead(SW4) == LOW) { digitalWrite(ledPin, HIGH); MotorD(); MotorH(); while (digitalRead(SW4) == LOW) ; digitalWrite(ledPin, LOW); } } }
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