Arduino Countdown Timer Relay

DIY Arduino Countdown Timer with "Explosive" Finish! 💥

In this video, I built a custom countdown timer using an Arduino Nano, an OLED display, and a relay module to trigger a small "explosive" effect (the capacitor/igniter). 🛠️Components used: Arduino Nano SSD1306 OLED Display 5V Relay Module Active Buzzer & Push Button 18650 Battery Pack Arduino project, Arduino Nano tutorial, OLED display ...

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