DIY Arduino Quiz Buzzer System
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- Опубликовано: 3 июл 2024
- This is a video tutorial explaining how to create an #arduino multiplayer interactive quiz buzzer system, as used in TV gameshows, pub quizzes, etc.
Code available for download from github.com/playfultechnology/... 
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I made one for a children's entertainer many years ago before Arduinos, it used either a PIC or AVR programmed in assembly, it had an early audio record/playback chip so each contestant could record their own name or sound. I slight overkill thing was it could deal with dead heats, all buttons were diode OR'd to an interrupt pin which if triggered read the whole port at the same time so a dead heat/draw could be detected.
Nice solution!
One pretty easy thing you can do to help with storage is use 3.5mm panel mount stereo audio jacks on the buzzers and control box, then connect them via aux cables. That way you can store them without the cabling getting in the way. Bonus advantage of the cable probably just coming out instead of breaking if a buzzer is dropped or pulled by an overexcited child.
Ethernet jacks/cables should work as well, though most of the wires won't be used. The biggest advantage being that it's super-easy to make a cable in any length you want for different situations (e.g. shorter cables for the dinner table, longer for a classroom scenario).
This is a great project! Thanks for the detailed explanation
Love it! What great timing. Just last week, I was using one of these with my year 9 and 10 science classes. I built it around 20 years ago, all analog based around 4 thyristors as triggers, with 4 LED's and a buzzer. The tactile buttons are mounted on the top of clear film canisters (if anyone can remember them) each with an LED inside. For connecting to the control unit I used 5 pin din plugs/sockets. I was thinking just last week I need to make larger, more visual buttons, with better sounds perhaps some automatic scoring. The arcade buttons are a great idea. Thank you! I did think of wireless, but I'm not interested in having to worry about four additional sets of batteries.
Ah, I often used to use empty film canisters as waterproof enclosures for small electronic projects! (often with different degrees of success....). A couple of folks have mentioned wireless buttons, but I tend to agree with you - the additional copmlexity, and hassle of managing batteries, and concerns over latency/lag probably isn't worth it (fwiw, I'm just using cheap speaker cable to wire each button to the host panel, and you can buy it in 100m rolls very cheaply)
@@PlayfulTechnology Also, with a cable attached, it helps control the space and stops players from wandering around with the device - I could imagine my year 9's getting a bit too excited and passing it around.
Love it! Well done!
Thanks so much!
Brilliant!
So much fun!
Thanks! This is cool
I am new to building and programming the Arduino and I am very impressed with the projects that you run through on your site. I would very much like to build this quiz project but being inexperianced I do not have the skill to build and connect the hardware. Is there a circuit diagram anywhere for the build?
maybe a smaller scoreboard on each of the button bases where players can see their score as well on top of maybe like t3chrs suggested a bigger screen for everyone to see the score
Brilliant video! Do you have the circuit wiring diagram? Thanks
I’m envisioning a ws2812 matrix to display scores and game state.
Hi Alistair, am I seeing correctly that the mp3 component is set to one-line mode? Looking forward to building this, great vid!
No - I use them in serial command mode.
Love it, would absolutely LOVE a wireless button version, perhaps using ESP32 wifi and a battery in each button box.
As it happens, I do have a wireless version as well - it uses a D1 Mini in each button box and communicates over an ESPNow mesh. The only slight issue is that wireless communication necessarily introduces a very slight delay between the button being pressed and it being registered by the server. In the overwhelming majority of cases it wouldn't be perceptible, but (having hosted a pub quiz myself for many years with some _very_ competitive teams!) I want to ensure there's no scope for teams to accuse the host of them having pressed the button but that detection to be delayed.
It can probably be addressed by having a synchronised timestamp on every device, but I'll need to do a few more tests first to measure what the lag is, and whether it's even worth accounting for (and things like whether proximity/interference from other nearby Wi-Fi networks affect it etc. etc.)
@@PlayfulTechnology I’m thinking perhaps 433mhz remote relays, that way a) there’s no delay and b) no need to run battery or network, so essentially the same as your solution but with remote relays instead of wires. Can you foresee any issues with this (other than rewiring the button on the remote so an arcade button fires it off). I’ve got a quiz coming up that I’m jointly hosting and I want to get away from the whole “swapping papers” malarkey
@@ImperialLightandMagic But if you've got multiple buttons all simultaneously transmitting on the same 433MHz frequency, how are you preventing interference?
@@ImperialLightandMagic I used ESP32's with the ESPnow protocol for this to reduce wiring, I was annoyed with the displays as the art department were supposed to add gels to increase contrast which they didn't. It had very low latency and worked in a TV studio with wireless cameras and mics nearby.
ruclips.net/video/9NKLju08Pas/видео.html
@@ImperialLightandMagic Also ruclips.net/video/C8_qKI2EF7w/видео.html
ruclips.net/video/F0KSmA5b2Bs/видео.html
please, be my dad.
Nice project. Lots of fun