I use github.com/SnijderC/dyplayer in all my projects.

I'm not using any "touch inputs" - it's just kitchen aluminium foil, which I've attached to pins on the ESP32.

Effectively, can I use interference to my advantage 😂 or does that interference actually affect the other antennas around it as well as the multitude of tags we are trying to read

Glad it helped!

Awh, that's great!

Hi, thanks for your comment - I don't really have a "shop" for individual sketches - I use Patreon because it's really convenient, but that's set up more for an ongoing subscription model. What sketch was it you were interested in? I'll see what I can sort out.

I’ll look through what project it was. I design my own hobby-level escape room for my friends at home and I just started dabble with Arduino. I have MScEE but it was a long time ago I programmed 🤣

You _could_, but you'd need to have a very accurate timestamp synchronised between the devices, or else a multiple roundway-trip at which each device records their own timestamp, and then compares that to the time at which the response is received back.

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.

Nice solution!

Thanks so much!

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. kzbin.info/www/bejne/b3-ufZ2rZZ2Dl9U

@@ImperialLightandMagic Also kzbin.info/www/bejne/eWnCon5_Z6p5bdk kzbin.info/www/bejne/fGGuhKB3asdleNU

Nice. I've done that too ;) kzbin.info/www/bejne/eHjKgJd_m6x1ftU