Fastest Finger First Circuit For Quizzes

Fastest Finger First Circuit For Quizzes | 555 Timer Project #17

Рет қаралды 42,886

Elonics - Electronics Projects on Breadboard

Күн бұрын

A tutorial on how to make a fastest finger first circuit which can track the first person to press the trigger. This circuit consists of multiple replicas of a module, each of which can be assigned to a single quiz taker or a team. Each module contains a trigger (We used momentary push button in the video) and an LED indicating whether the team corresponding to this module is the first one to press the trigger.
Monostable arrangement can be coupled to the output of this circuit so that a buzzer beeps for a second after the first press by any quiz taker.
Link to the project page and circuit diagram: elonics.org/fa...
Components Required For Each Module:
555 Timer IC
Momentary Push Button Switch
PN Diode (I used 1N4148)
LED + Series Resistor (270R)
10K Resistor
Components Common For All Modules:
2 x 1K Resistors
LED + Series Resistor (270R)
Momentary Push Button (For resetting)
Breadboard
Few Breadboard Connectors
(5-12)V Power Supply
This tutorial is a part of 18 video series on Electronic Projects created using IC 555: • 555 Timer Projects on ...
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Пікірлер: 45

@jontech9978 3 жыл бұрын

This channel is a hidden gem

@sarvadnyadesai861 3 жыл бұрын

Yes.....very true

@CrazyCoupleDIY Жыл бұрын

Awesome, thats exactly what I was after

@AtomicNathan 2 ай бұрын

Can you provide a circuit diagram where it includes the buzzer

@alanmangroo3656 3 жыл бұрын

This is really great!

@chandrakanthjalapati1220 2 жыл бұрын

Can u pls provide circuit diagram for buzzer circuit or atleast provide values of resistors nd capacitors used in buzzer circuit

@janani6624 2 жыл бұрын

Yes please

@realtrickybilly 3 жыл бұрын

Thank you for making videos again. Best wishes

@nissankalakarthikeya2692 Жыл бұрын

Sir, what are the values of capacitor? Which was shown at the end of the video

@thevivekgoutam Жыл бұрын

what is the values of the components(resistor, capacitor, etc.) used in buzzer circuit....please answer ASAP

@srivathskamath472 Жыл бұрын

Can u please tell the value of Resistor placed in series, and the value of Voltage source

@oogagapocoloco5446 Жыл бұрын

Same problem

@BTaarunraj 3 ай бұрын

Can I use pn diode with any other value

@husnasiddiqa3996 2 жыл бұрын

Can we use In4007 diode instead of In4148

@bharatikitchen6466 11 ай бұрын

Can you please tell me a theme to present this project 🤗

@RapidBoss08 3 жыл бұрын

Thanks so much! I love your videos!

@elonics 3 жыл бұрын

You're welcome!

@yuvrajbasutkar7943 Жыл бұрын

Can you please make a video using oled display!!!

@ballaramesh5889 2 жыл бұрын

How the monostale arrangement is made??

@muhammadevan9090 2 жыл бұрын

Sir, is it okay just put 3 players not 4 players?

@TerryIves-v4e Жыл бұрын

Unfortunately, if two or more players press the button at EXACTLY the same instant, more than one LED can light which is an invalid state.

@santhosh4832 Жыл бұрын

Bro is this project worth doing.. does it work properly?

@TerryIves-v4e Жыл бұрын

@@santhosh4832As mentioned earlier, it IS possible for more than one LED to light if the players' switches are pressed at exactly the same time. I have made a fix for this invalid state. Using three AND gates to monitor LEDs1 & 2; 1 & 3; 2 & 3, then feeding these outputs to an OR gate, the final output can be used to drive an NPN transistor to pull the RESET bus low. This removes the invalid state.