Day 11: Buzzer — Make Noise and a Simple Melody 11 April 2026·1199 words·6 mins Arduino Arduino Beginner Kids Buzzer Tone Sound Melody Day 11 of Learn Coding with Arduino — connect a piezo buzzer and use tone() to play beeps, notes, and a short melody.
Day 20: Sound Sensor — Clap to Control 11 April 2026·1324 words·7 mins Arduino Arduino Beginner Kids Sound Sensor Ky-038 Clap Day 20 of Learn Coding with Arduino — wire up a KY-038 sound sensor, detect claps, and toggle an LED with a sound.
Day 21: Dual-Mode Control — IR Remote + Sound 11 April 2026·1257 words·6 mins Arduino Arduino Beginner Kids Ir Sound Lcd Modes Integration Day 21 of Learn Coding with Arduino — combine the IR remote and sound sensor into one sketch with manual and auto modes, with the LCD showing the current state.