💡 Arduino sketch — Dual LED fades in gradually via PWM then turns off instantly with 3s pause | LED مزدوج يزيد سطوعه تدريجياً ثم يطفي فجأة مع توقف 3 ثواني
arduino electronics embedded-systems led arduino-uno pwm pulse-width-modulation analogwrite fade-effect
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Updated
Sep 26, 2026 - C++