This is a heavily interactive web application, and JavaScript is required. Simple HTML interfaces are possible, but that is not what this is.
Post
Arduino
officialarduino.bsky.social
did:plc:l7mqojj23jm7ekk4wgy5wx6n
Flip this Arduino Nano-controlled LED hourglass over and watch its “sand” pixels fall down from one matrix to the other.
https://blog.arduino.cc/2025/10/01/this-arduino-nano-r4-controlled-hourglass-simulates-sand-with-leds/?_gl=1*p6c0fd*_up*MQ..*_ga*MTA0NDMwMTk4Mi4xNzU5MzI4Njkz*_ga_NEXN8H46L5*czE3NTkzMjg2OTMkbzEkZzEkdDE3NTkzMjg3MjIkajMxJGwwJGgxNTIxNzA0Mzk1
2025-10-01T14:29:44.352Z