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FASTEST FINGER FIRST With Arduino Mega And P10 Display
Electronics For You
|February 2025
Fastest finger first indicators (FFFIs) bring precision to quiz games, measuring contestants’ reaction times with accuracy. Supporting up to eight teams, the system identifies the first to press their button while locking out others. A P10 LED display module highlights the winning team in real-time.
The device employs an Arduino Mega, designed for setups with eight or more players. Its capacity can be expanded to support over 30 players by modifying the code to handle additional inputs. Components required are listed in the Bill of Materials table. Fig. 1 displays the prototype.
Circuit diagram and working Fig. 2 shows the circuit diagram of the fastest finger first system. It is built around an Arduino Mega (MOD1), P10 LED display/dot matrix LED display (MOD2), push buttons (SW1-SW8), two power supplies—one for the P10 single-colour display and the other for the Arduino Mega—and a few other components.
The fastest finger first method involves candidates pressing a key placed in front of them. The first person to press the key is granted the opportunity to answer the question.
This story is from the February 2025 edition of Electronics For You.
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