Great tutorial Brother. You made it all very clear, easy to follow, and even I understood how it all worked even though I am old, lol. Great job my friend, well done. Love from UK, Ken.
Hello. Can you explain how to use the 7474 IC instead of the 4013 IC? I cannot get the 4013 IC in my area. I used the 7474 IC instead and also changed all the pinouts accordingly but when I turn it on all the LEDs glow very lightly and none of the buttons seem to work.
Design a system having four users and a host Host will ask a question and a timer f 15 sec will get start. All the users will have a buzzer button to reply to that question. The moment any first user reply, counter will stop, and no other user can reply. A 7-segment display will show the i user number and a green led will gets on. If counter overflows and users failed to reply in the allocated duration, a red light will glow with a buzzer,
hey, i know to want to if i use 9v DC battery, is that going to make any problem ? And also, i am facing a problem that is every switch of led works even after after one specific switch pressed.
Hello sir ....i do this same process but my reset and other 4 switches are not working ....my power suppy is 9v ......so what can i do now....pls suggest
Bro ,I have a doubt ,for my circuit the LED is glowing only when I press the switch,if I remove my hand from switch it stops... What will be the problem bro Help me bro..
I hope your circuit connection is correct. Now, please check your power supply. Some power supply has noise. 4013 doesn't work if noise is there. So connect a electrolyte capacitor (100uF) across the positive and negative. Supply 6v instead of 5v. Now the circuit should work. By the way, try my 8 player quiz circuit. That circuit is easy and doesn't have this kind of error.
Are there issues with the the 4013 D Flip-Flop IC? I see some mentions of issues in the comments but I haven't found official documentation on it. I have tried making this circuit based on your design, can get the LEDs to light up, but have no control over the LEDs in the circuit with the buttons. They come on by themselves, sometimes a few stay on, some times they turn off, it all appears a bit random. Sometimes the reset button will work for LEDs 2 3, and 4. Some times it does not. I am powering the breadboards with only a 5V 3A power supply and have added a electrolytic capacitor (16V 100uF). Could this behavior be attributable to being underpowered? Or maybe the IC's I have are counterfeit or bad?
Dear Friend., This is the first time I am seeing a valuable video. All other videos are filled with horrible background music that will destroy our ear drums.Good Luck. I will watch all your videos peacefully. Please do not add any background music like others do. Instead your commentry is valuable and worth.
My project is not working.I have checked all the connections they are fine.Can you help me in finding the mistake or can you give any link for its working explanation so that i can figure it out myself?
@@EEWave I am working with 6V by using 7806.how can I make it 6.6.By troubleshooting I have found that there is some problem with both 4031 ics The output to led is through Q of D flip flop which should be 1 if both S and R inputs are 1.In my circuit both inputs are 1 but Q is not 1
Ok no problem with 6v but you can have 6.5 volt with LM317T. Now, if you are getting problem with ic 4013, then try with ic 7474, this is also dual D-flip flop ic. Or watch my 8 channel quiz buzzer circuit, that circuit is more easier than this, th-cam.com/video/mljXSRayRuA/w-d-xo.html
I think this circuit is getting external noise from the power supply. Try to remove the noise by using capacitor or use 6v DC battery for this circuit, this will work.
If you press the two switches at a time and if the time difference is approximately less than 140 nS, then either two LEDs will glow or will not glow any of them. 140 nS because it has some propagation delay. Yes, you can make it auto reset by using 555 timer in mono-stable mode. You have to connect its pin 3 to the reset switch of this circuit.
Jai Hind Sir. Sir, I've uploaded a video on 8 players. Just connect five switch with that circuit. Here is the link: th-cam.com/video/mljXSRayRuA/w-d-xo.html
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Thank you, brother. You helped a lot in my project.
Great tutorial Brother. You made it all very clear, easy to follow, and even I understood how it all worked even though I am old, lol. Great job my friend, well done. Love from UK, Ken.
Thank you so much Sir..! Love from India, Debajyoti.
Hello. Can you explain how to use the 7474 IC instead of the 4013 IC? I cannot get the 4013 IC in my area. I used the 7474 IC instead and also changed all the pinouts accordingly but when I turn it on all the LEDs glow very lightly and none of the buttons seem to work.
Thank you very much sir , it is now working ,my mistake. It's the best project and great and clear explanation.
Thank you bro and congratulations for your success.
What was the mistake?
What kind of diode did you use?
Design a system having four users and a host Host will ask a question and a timer f 15 sec will get start. All the users will have a buzzer button to reply to that question. The moment any first user reply, counter will stop, and no other user can reply. A 7-segment display will show the i user number and a green led will gets on. If counter overflows and users failed to reply in the allocated duration, a red light will glow with a buzzer,
This project is perfect! Thank you sir!
By the way... Is it possible to make this to a 12 button/player? Thank you in advance
Yes, it is possible by using ic 74ls373 (we need two of them).
However, I've uploaded 8 players circuit, please check the description box.
can we extend the switch and separate it from the breadboard???
Yes Mam, we can. We can use any kind of Push-to-On switch.
hey, i know to want to if i use 9v DC battery, is that going to make any problem ? And also, i am facing a problem that is every switch of led works even after after one specific switch pressed.
Hello sir ....i do this same process but my reset and other 4 switches are not working ....my power suppy is 9v ......so what can i do now....pls suggest
Bro ,I have a doubt ,for my circuit the LED is glowing only when I press the switch,if I remove my hand from switch it stops...
What will be the problem bro
Help me bro..
I hope your circuit connection is correct. Now, please check your power supply. Some power supply has noise. 4013 doesn't work if noise is there. So connect a electrolyte capacitor (100uF) across the positive and negative. Supply 6v instead of 5v. Now the circuit should work.
By the way, try my 8 player quiz circuit. That circuit is easy and doesn't have this kind of error.
@@EEWave will this also work with 12V instead of 6V?
Are there issues with the the 4013 D Flip-Flop IC? I see some mentions of issues in the comments but I haven't found official documentation on it. I have tried making this circuit based on your design, can get the LEDs to light up, but have no control over the LEDs in the circuit with the buttons. They come on by themselves, sometimes a few stay on, some times they turn off, it all appears a bit random. Sometimes the reset button will work for LEDs 2 3, and 4. Some times it does not. I am powering the breadboards with only a 5V 3A power supply and have added a electrolytic capacitor (16V 100uF). Could this behavior be attributable to being underpowered? Or maybe the IC's I have are counterfeit or bad?
Sir I made the circuit but when I connect the 5v supply , all led glows .I am not able to find mistake. The circuit is also correct
Can you provide explanation for the working of this circuit?
Please provide its details in pdf or any web page link as soon as possible please please 🙏🏻🙏🏻🙏🏻
Are you having any project ? Where are you from ??
Dear Friend., This is the first time I am seeing a valuable video. All other videos are filled with horrible background music that will destroy our ear drums.Good Luck. I will watch all your videos peacefully. Please do not add any background music like others do. Instead your commentry is valuable and worth.
Thank you so much Sir. I'll surely follow your valuable instructions.
Hey brother can i extend this for 6 players?
I found a couple of issues in my circuit ... can you help me out to fix...2 leds are working properly and 2 aren't..
Ya sure, please explain the issues
2 LEDs are working and 2 not... I tried it 10 times.. yet the problem is not solving
I have to submit the project on Monday... can you fix the problem ASAP???
I hope your all components are in good condition and you have connected the circuit correctly. Now, what kind of power supply you're using?
@@EEWave yes all the components are in good condition... 6v battery
it did not work for me.. is it the problem with the IC??
how much voltage is your power supply?
My project is not working.I have checked all the connections they are fine.Can you help me in finding the mistake or can you give any link for its working explanation so that i can figure it out myself?
What is the power supply you are using? Try this on 6.5 volt, and tell me where it is working or not.
@@EEWave I am working with 6V by using 7806.how can I make it 6.6.By troubleshooting I have found that there is some problem with both 4031 ics
The output to led is through Q of D flip flop which should be 1 if both S and R inputs are 1.In my circuit both inputs are 1 but Q is not 1
Ok no problem with 6v but you can have 6.5 volt with LM317T. Now, if you are getting problem with ic 4013, then try with ic 7474, this is also dual D-flip flop ic. Or watch my 8 channel quiz buzzer circuit, that circuit is more easier than this, th-cam.com/video/mljXSRayRuA/w-d-xo.html
@@EEWave ok thank you
@@EEWave only one of the buzzer is working
Are you using a 7408 AND gate ic or a 7404 NOT gate ic
How to add a display 7 segment
By adding IC 7447 with the input switches and with some modifications in this circuit, you can add 7 segments display.
Why all 4 leds on at 13:00?
Sir,
Can we use 9 v battery
No, don't use 9v. Maximum voltage you can use is 6v.
Convert 9v to 5v using voltage regulator IC 7805.
@@EEWave thank you sir
Sir I made the circuit but when I connect the 5v supply , all led glows .I am not able to find mistake. The circuit is also correct
I think this circuit is getting external noise from the power supply. Try to remove the noise by using capacitor or use 6v DC battery for this circuit, this will work.
Can you make this for me...
Good
sir help me this project
If we press the two buttons at a time what will happen ???
Can we modify from manual reset to auto reset ??
If you press the two switches at a time and if the time difference is approximately less than 140 nS, then either two LEDs will glow or will not glow any of them. 140 nS because it has some propagation delay.
Yes, you can make it auto reset by using 555 timer in mono-stable mode. You have to connect its pin 3 to the reset switch of this circuit.
9v ki battery me ye work nahi karega ?
Nahi bhai. 6v me acha se kam karega.
How to make it for five players? Pls reply
Jai Hind Sir.
Sir, I've uploaded a video on 8 players. Just connect five switch with that circuit. Here is the link:
th-cam.com/video/mljXSRayRuA/w-d-xo.html
Thank you
It don't work😢
Try to use 6 volt battery, or
1.5 volt x 4