Bomb gamer

BOMB GAME

Introduction:

“Should I cut the blue wire…or the red…?”
This is a very common phrase in many movies when the action hero has a bomb in front of him with little time left and he has to choose which wire to cut and stop the bomb from exploding saving millions of people.

This game is just that… a count down timer and 4 wires of different colours.
The player has to remove each wire until it deactivates the bomb.

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Schematic:

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Part List:

R1 1K ohms resistor
R2 1K ohms resistor
R3 560 ohms resistor
R4 560 ohms resistor
R5 4K7 ohms resistor
R6 10K ohms resistor
R7 10K ohms resistor
R8 10K ohms resistor
R9 10K ohms resistor R10 10K ohms resistor
C1 10uF capacitor
T1 BC548 Transistor
T2 BC548 Transistor
Piezo HPE-120 piezo
Digits Dual 7 segment display - LTD6410G
IC1 16F88 microcontroller from Microchip
S1 Push button

Others:
Box
PCB
Wires
4.8V Battery Pack
Hex program for the microcontroller

PCB:

I’ve decided to build my version on a breadboard because it has a more realistic look.
All the wires and components create a better game experience.
Anyway I have made a pcb drawing making it possible to create a clean build.

The PCB used for this Project is double layer and its size is 70.79 mm x 42.01 mm.

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Top Side

Here is the top side of the pcb already mirrored.

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Bottom Side

Here’s the bottom side.

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How it works:

Turning the power on, the display and piezo will start small introduction.
After the introduction, the message “S1” will appear on the display meaning that S1 needs to be pressed for the game to start.
All four wires must be plugged in. If one of the wires is not plugged in, the message “EE” will display meaning that an error occurred and the game will not begin.

As the game begins, the count down will start. The display shows the timer and 15 seconds is all the time we have to