Robot Desk Buddy

This little robot sits at your desk and reacts to the world around it.

Dec 11, 2025

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7 respects

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Games

Robots

Toys

Components and supplies

Push Button

Resistor 100 Ohm ¼ w

10k Resistors

piezo speaker

Panel Mount 1K potentiometer (Breadboard Friendly) - 1K Linear

160 Ohm resistor

LCD 16x2 Backlit Display

ELEGOO Jumper Wires

Arduino Uno Rev3

Apps and platforms

Tinkercad

Project description

Code

Desk Buddy Code

cpp

1#include <LiquidCrystal.h>
2
3
4const int BUTTON = 7;
5const int PR = A5;
6const int PIEZO = 2;
7const int GAME = 3;
8
9const int RS = 8;
10const int E = 9;
11const int DB4 = 10;
12const int DB5 = 11;
13const int DB6 = 12;
14const int DB7 = 13;
15
16
17int prValue;
18int buttonState;
19int gameState;
20int buttonCount = 0;
21
22int laughNotes[] = {
23  440, 523, 587, 659, 587, 523
24};
25int laughDurations[] = {
26  100, 100, 100, 100, 100, 200
27};
28int laughLength = 6;
29
30int annoyedNotes[] = {
31  600, 520, 450, 400
32};
33
34int annoyedDurations[] = {
35  180, 200, 230, 320
36};
37
38int annoyedLength = 4;
39
40int sleepNotes[] = {
41  523, 494, 440, 392, 330
42};
43
44int sleepDurations[] = {
45  200, 220, 250, 300, 500
46};
47
48int sleepLength = 5;
49
50int singNotes[] = { 659, 784, 523, 587 };
51int singDurations[] = { 150, 150, 150, 300 };
52int singLength = 4;
53
54int sleepSingNotes[] = {
55  440, 494, 523, 494,
56  440, 392, 440, 392
57};
58
59int sleepSingDurations[] = {
60  180, 180, 220, 180,
61  180, 200, 180, 220
62};
63
64int sleepSingLength = 8;
65
66
67int awakeNotes[] = {
68  523, 659, 784, 988, 784, 659  
69};
70
71int awakeDurations[] = {
72  120, 120, 150, 170, 150, 200
73};
74
75int awakeLength = 6;
76
77int startGameNotes[] = {
78  659, 784, 988, 1319
79};
80
81int startGameDurations[] = {
82  120, 120, 150, 200
83};
84
85int startGameLength = 4;
86
87int obsPos;        
88bool jumping;
89unsigned long jumpTimer = 0;
90unsigned long jumpDuration = 500;
91int score;
92
93LiquidCrystal lcd(RS, E, DB4, DB5, DB6, DB7);
94
95void setup()
96{
97  Serial.begin(9600);
98  pinMode(BUTTON, INPUT);
99  pinMode(GAME, INPUT);
100  pinMode(PR, INPUT);
101  pinMode(PIEZO, OUTPUT);
102  lcd.begin(16, 2);
103}
104
105void loop()
106{
107 prValue = analogRead(PR);
108  if(prValue < 932){
109    while(prValue < 932){
110      sleep();
111    }
112  }
113  else{
114    playMelody(awakeNotes, awakeDurations, awakeLength);
115    lcd.setCursor(6,0);
116    lcd.print("- -");
117    lcd.setCursor(7, 1);
118    lcd.print("O    ");
119    delay(1000);
120    lcd.setCursor(6,0);
121    lcd.print("^ ^          ");
122    lcd.setCursor(7, 1);
123    lcd.print("-");
124    delay(1000);
125    lcd.setCursor(6,0);
126    lcd.print("^ ^");
127    lcd.setCursor(6, 1);
128    lcd.print("\\_/");
129    delay(1000);
130    lcd.setCursor(6,0);
131    lcd.print("^ ^");
132    lcd.setCursor(6, 1);
133    lcd.print("\\_/");
134    while (prValue > 932){
135      	awake();
136    }
137    playMelody(sleepNotes, sleepDurations, sleepLength);
138    lcd.setCursor(6,0);
139    lcd.print("- -");
140    lcd.setCursor(6, 1);
141    lcd.print("\\_/   ");
142    delay(1000);
143    lcd.setCursor(6,0);
144    lcd.print("- -           ");
145    lcd.setCursor(6, 1);
146    lcd.print(" O   ");
147    delay(1000);
148    lcd.setCursor(6,0);
149    lcd.print("- -");
150    lcd.setCursor(6, 1);
151    lcd.print(" o ");
152    delay(1000);
153  }
154  
155}
156
157void awake() {
158  buttonState = digitalRead(BUTTON);
159      	while (buttonState == 1){
160          lcd.setCursor(6, 0);
161          lcd.print("> < HAHA!");
162          lcd.setCursor(6, 1);
163          lcd.print("\\_/");
164          playMelody(laughNotes, laughDurations, laughLength);
165          lcd.setCursor(6,0);
166    	  lcd.print("^ ^      ");
167    	  lcd.setCursor(6, 1);
168    	  lcd.print("\\_/");
169          buttonState = digitalRead(BUTTON);
170          buttonCount++;
171          if(buttonCount > 3){
172            while(buttonState == 1){
173            lcd.setCursor(6, 0);
174          	lcd.print("> < STOP!  ");
175          	lcd.setCursor(6, 1);
176          	lcd.print(" ^ ");
177            playMelody(annoyedNotes, annoyedDurations, annoyedLength);
178            delay(1000);
179            buttonState = digitalRead(BUTTON);
180            }
181            lcd.setCursor(6,0);
182            lcd.print("^ ^      ");
183            lcd.setCursor(6, 1);
184            lcd.print("\\_/");
185          }
186   
187          
188        }
189  		gameState = digitalRead(GAME);
190        if (gameState == 1){
191        	runGame();
192        }
193      	buttonCount = 0;
194        unsigned int chance = random(1, 65535); 
195      	if (chance == 10){
196          lcd.setCursor(6, 1);
197          lcd.print(" O LA LA");
198          playMelody(singNotes, singDurations, singLength);
199          lcd.setCursor(6,0);
200    	  lcd.print("^ ^");
201    	  lcd.setCursor(6, 1);
202    	  lcd.print("\\_/     ");
203          chance = 1;
204      }
205      	prValue = analogRead(PR);
206    }
207void sleep() {
208    lcd.setCursor(6,0);
209    lcd.print("- -");
210    lcd.setCursor(0, 1);
211    lcd.print("              ");
212    lcd.setCursor(7, 1);
213    lcd.print("-    ");
214    delay(1000);
215    lcd.setCursor(6,0);
216    lcd.print("- -");
217    lcd.setCursor(7, 1);
218    lcd.print("o zZ");
219    lcd.setCursor(6,0);
220  	lcd.print("- -");
221  	  unsigned int chance = random(1, 65535); 
222      if (chance == 10){
223        playMelody(sleepSingNotes, sleepSingDurations, sleepSingLength);
224      }
225      delay(1000);
226      prValue = analogRead(PR);
227}
228
229
230
231void playMelody(int notes[], int durations[], int length) {
232  for (int i = 0; i < length; i++) {
233    tone(PIEZO, notes[i], durations[i]);
234    delay(durations[i] + 20);
235  }
236  noTone(PIEZO);
237}
238
239
240
241void runGame() {
242  lcd.clear();
243
244  obsPos = 15;
245  jumping = false;
246  score = 0;
247
248  delay(500);
249  playMelody(startGameNotes, startGameDurations, startGameLength);
250  while (true) {
251    lcd.clear();
252    if (digitalRead(GAME) == HIGH && !jumping) {
253      jumping = true;
254      jumpTimer = millis();
255    }
256
257    if (jumping && millis() - jumpTimer > jumpDuration) {
258      jumping = false;
259    }
260
261    if (jumping) {
262      lcd.setCursor(2, 0); 
263      lcd.print("O");
264    } else {
265      lcd.setCursor(2, 1);
266      lcd.print("O");
267    }
268
269    if (obsPos >= 0) {
270      lcd.setCursor(obsPos, 1);
271      lcd.print("/\\");
272    }
273
274    if (!jumping && obsPos == 2) {
275      lcd.clear();
276      lcd.setCursor(4, 0);
277      lcd.print("GAME OVER");
278      lcd.setCursor(4, 1);
279      lcd.print("Score: ");
280      lcd.print(score);
281      playMelody(sleepNotes, sleepDurations, sleepLength);
282      delay(2500);
283      lcd.clear();
284      lcd.setCursor(6,0);
285      lcd.print("^ ^      ");
286      lcd.setCursor(6, 1);
287      lcd.print("\\_/");
288      return;
289    }
290
291    
292    obsPos--;
293
294    
295    if (obsPos < -1) {
296      obsPos = 15;
297      score++;
298    }
299
300    delay(120);
301  }
302}

#include <LiquidCrystal.h>


const int BUTTON = 7;
const int PR = A5;
const int PIEZO = 2;
const int GAME = 3;

const int RS = 8;
const int E = 9;
const int DB4 = 10;
const int DB5 = 11;
const int DB6 = 12;
const int DB7 = 13;


int prValue;
int buttonState;
int gameState;
int buttonCount = 0;

int laughNotes[] = {
  440, 523, 587, 659, 587, 523
};
int laughDurations[] = {
  100, 100, 100, 100, 100, 200
};
int laughLength = 6;

int annoyedNotes[] = {
  600, 520, 450, 400
};

int annoyedDurations[] = {
  180, 200, 230, 320
};

int annoyedLength = 4;

int sleepNotes[] = {
  523, 494, 440, 392, 330
};

int sleepDurations[] = {
  200, 220, 250, 300, 500
};

int sleepLength = 5;

int singNotes[] = { 659, 784, 523, 587 };
int singDurations[] = { 150, 150, 150, 300 };
int singLength = 4;

int sleepSingNotes[] = {
  440, 494, 523, 494,
  440, 392, 440, 392
};

int sleepSingDurations[] = {
  180, 180, 220, 180,
  180, 200, 180, 220
};

int sleepSingLength = 8;


int awakeNotes[] = {
  523, 659, 784, 988, 784, 659  
};

int awakeDurations[] = {
  120, 120, 150, 170, 150, 200
};

int awakeLength = 6;

int startGameNotes[] = {
  659, 784, 988, 1319
};

int startGameDurations[] = {
  120, 120, 150, 200
};

int startGameLength = 4;

int obsPos;        
bool jumping;
unsigned long jumpTimer = 0;
unsigned long jumpDuration = 500;
int score;

LiquidCrystal lcd(RS, E, DB4, DB5, DB6, DB7);

void setup()
{
  Serial.begin(9600);
  pinMode(BUTTON, INPUT);
  pinMode(GAME, INPUT);
  pinMode(PR, INPUT);
  pinMode(PIEZO, OUTPUT);
  lcd.begin(16, 2);
}

void loop()
{
 prValue = analogRead(PR);
  if(prValue < 932){
    while(prValue < 932){
      sleep();
    }
  }
  else{
    playMelody(awakeNotes, awakeDurations, awakeLength);
    lcd.setCursor(6,0);
    lcd.print("- -");
    lcd.setCursor(7, 1);
    lcd.print("O    ");
    delay(1000);
    lcd.setCursor(6,0);
    lcd.print("^ ^          ");
    lcd.setCursor(7, 1);
    lcd.print("-");
    delay(1000);
    lcd.setCursor(6,0);
    lcd.print("^ ^");
    lcd.setCursor(6, 1);
    lcd.print("\\_/");
    delay(1000);
    lcd.setCursor(6,0);
    lcd.print("^ ^");
    lcd.setCursor(6, 1);
    lcd.print("\\_/");
    while (prValue > 932){
      	awake();
    }
    playMelody(sleepNotes, sleepDurations, sleepLength);
    lcd.setCursor(6,0);
    lcd.print("- -");
    lcd.setCursor(6, 1);
    lcd.print("\\_/   ");
    delay(1000);
    lcd.setCursor(6,0);
    lcd.print("- -           ");
    lcd.setCursor(6, 1);
    lcd.print(" O   ");
    delay(1000);
    lcd.setCursor(6,0);
    lcd.print("- -");
    lcd.setCursor(6, 1);
    lcd.print(" o ");
    delay(1000);
  }
  
}

void awake() {
  buttonState = digitalRead(BUTTON);
      	while (buttonState == 1){
          lcd.setCursor(6, 0);
          lcd.print("> < HAHA!");
          lcd.setCursor(6, 1);
          lcd.print("\\_/");
          playMelody(laughNotes, laughDurations, laughLength);
          lcd.setCursor(6,0);
    	  lcd.print("^ ^      ");
    	  lcd.setCursor(6, 1);
    	  lcd.print("\\_/");
          buttonState = digitalRead(BUTTON);
          buttonCount++;
          if(buttonCount > 3){
            while(buttonState == 1){
            lcd.setCursor(6, 0);
          	lcd.print("> < STOP!  ");
          	lcd.setCursor(6, 1);
          	lcd.print(" ^ ");
            playMelody(annoyedNotes, annoyedDurations, annoyedLength);
            delay(1000);
            buttonState = digitalRead(BUTTON);
            }
            lcd.setCursor(6,0);
            lcd.print("^ ^      ");
            lcd.setCursor(6, 1);
            lcd.print("\\_/");
          }
   
          
        }
  		gameState = digitalRead(GAME);
        if (gameState == 1){
        	runGame();
        }
      	buttonCount = 0;
        unsigned int chance = random(1, 65535); 
      	if (chance == 10){
          lcd.setCursor(6, 1);
          lcd.print(" O LA LA");
          playMelody(singNotes, singDurations, singLength);
          lcd.setCursor(6,0);
    	  lcd.print("^ ^");
    	  lcd.setCursor(6, 1);
    	  lcd.print("\\_/     ");
          chance = 1;
      }
      	prValue = analogRead(PR);
    }
void sleep() {
    lcd.setCursor(6,0);
    lcd.print("- -");
    lcd.setCursor(0, 1);
    lcd.print("              ");
    lcd.setCursor(7, 1);
    lcd.print("-    ");
    delay(1000);
    lcd.setCursor(6,0);
    lcd.print("- -");
    lcd.setCursor(7, 1);
    lcd.print("o zZ");
    lcd.setCursor(6,0);
  	lcd.print("- -");
  	  unsigned int chance = random(1, 65535); 
      if (chance == 10){
        playMelody(sleepSingNotes, sleepSingDurations, sleepSingLength);
      }
      delay(1000);
      prValue = analogRead(PR);
}



void playMelody(int notes[], int durations[], int length) {
  for (int i = 0; i < length; i++) {
    tone(PIEZO, notes[i], durations[i]);
    delay(durations[i] + 20);
  }
  noTone(PIEZO);
}



void runGame() {
  lcd.clear();

  obsPos = 15;
  jumping = false;
  score = 0;

  delay(500);
  playMelody(startGameNotes, startGameDurations, startGameLength);
  while (true) {
    lcd.clear();
    if (digitalRead(GAME) == HIGH && !jumping) {
      jumping = true;
      jumpTimer = millis();
    }

    if (jumping && millis() - jumpTimer > jumpDuration) {
      jumping = false;
    }

    if (jumping) {
      lcd.setCursor(2, 0); 
      lcd.print("O");
    } else {
      lcd.setCursor(2, 1);
      lcd.print("O");
    }

    if (obsPos >= 0) {
      lcd.setCursor(obsPos, 1);
      lcd.print("/\\");
    }

    if (!jumping && obsPos == 2) {
      lcd.clear();
      lcd.setCursor(4, 0);
      lcd.print("GAME OVER");
      lcd.setCursor(4, 1);
      lcd.print("Score: ");
      lcd.print(score);
      playMelody(sleepNotes, sleepDurations, sleepLength);
      delay(2500);
      lcd.clear();
      lcd.setCursor(6,0);
      lcd.print("^ ^      ");
      lcd.setCursor(6, 1);
      lcd.print("\\_/");
      return;
    }

    
    obsPos--;

    
    if (obsPos < -1) {
      obsPos = 15;
      score++;
    }

    delay(120);
  }
}

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