https://builtbynikhil.com/tags/ky-038/ Recent content in Ky-038 on Built by Nikhil Hugo -- gohugo.io en © 2026 Nikhil Joshi Sat, 11 Apr 2026 23:40:00 +0530 https://builtbynikhil.com/arduino/day-20-sound-sensor/ Sat, 11 Apr 2026 23:40:00 +0530 https://builtbynikhil.com/arduino/day-20-sound-sensor/ Day 20 of Learn Coding with Arduino — wire up a KY-038 sound sensor, detect claps, and toggle an LED with a sound.