01 · Brief
Behind the panel from the first game sits the ship’s authentication console. Three toggle switches carry markings only visible under the UV light the players are carrying. Set the switches right and the LCD wakes up and asks for a password.
The password is the code the alien artifacts gave up. Enter it on the keypad and the LED turns green, the relay fires, and the maglock drops, releasing a box of contents for the next game.
The Mega runs the whole console on its own. Toggle state, keypad input, the display, and the relay all live on one board with no link to the Pi.
02 · System
9 V RAIL12 V PSURELAYMAGLOCK→ MEGA
MEGATOGGLES ×3KEYPADLCD→ RELAY
03 · Source
Escape_Game_MegaKeypad.ino
void loop() {
if (digitalRead(triggerSwitchA) == LOW && digitalRead(triggerSwitchC) == LOW && digitalRead(triggerSwitchB) == HIGH) {
systemOn = true;
if (systemOn == true){
//lcd.clear();
lcd.setCursor(0,0);
lcd.print("Input Code:");
digitalWrite(redLED, HIGH);
customKey = myKeypad.getKey();
if (customKey){
Data[data_count] = customKey;
lcd.setCursor(data_count,1);
lcd.print(Data[data_count]);
Serial.print(Data[data_count]);
data_count++;
delay(50);
}
if(data_count == Password_Length-1){
lcd.clear();
delay(500);
if(!strcmp(Data, Master) && relayOn == false){
lcd.setCursor(0,0);
lcd.print("Accepted");
Serial.println("puzzle 2 solved");
digitalWrite(relay, HIGH); // Turn the relay on
Serial.println("relay on");
delay(200); // Wait
digitalWrite(relay, LOW); // Turn the relay Off
Serial.println("relay off");
relayOn = true;
}
else {
lcd.print("Thinking");
delay(1000);
lcd.clear();
clearData();
}
}
}
} else {
systemOn = false;
relayOn = false;
lcd.clear();
digitalWrite(redLED, LOW);
}
}04 · Lessons
This game led to the first "jump scare" which was fun to watch, maglocks don't release gently.