The Shocker Buzzer for Trivia Games (feat. @Kouman )

Quick Overview

Mehdi Sadaghdar, host of ElectroBOOM, successfully modifies a four-player electric shock trivia buzzer game by replacing its internal microcontroller with his own custom board, creating a more complex and fair game logic that incorporates external interrupts and PWM signals for controlled light and sound effects, ultimately demonstrating the superior electronic control possible over the original toy's simpler circuit.

Key Points: Mehdi Sadaghdar modifies a four-player electric shock trivia buzzer game by replacing the original control board with a custom microcontroller board. The original game logic is reverse-engineered, revealing that the host's button controls the timer and high-voltage power supply, while player buttons trigger external interrupts to the microcontroller. The custom circuit uses J-K Flip-Flops and logic gates to determine the first player to press their button, punishing subsequent presses by activating the shock mechanism. The host demonstrates the high-voltage output reaching 156.32V DC using an oscilloscope, confirming the shock potential is significant. The new software allows for complex game states, custom light/sound responses per player, and precise control over shock intensity via PWM signals. The video concludes with a successful demonstration where the host punishes the contestants for pressing buttons too early or too late, highlighting the improved fairness and control of the custom system.

Context: The video features Mehdi Sadaghdar from ElectroBOOM, who is reviewing and subsequently hacking a commercial four-player electric shock trivia game called 'Lightning Reaction'. The game involves players holding metal handles and pressing buttons to answer trivia questions, with the last person to press or anyone pressing too early getting shocked. Mehdi intends to reverse-engineer the device and replace its simple internal logic with a custom microcontroller setup to demonstrate superior, fairer control over the game mechanics.