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Read multiple buttons through row-column scanning.
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Combine sensors, relays, and Wi-Fi for smart control.
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Combine sensors with LCD or OLED for data display.
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Use voice commands to toggle relays or LEDs.
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Link multiple sensors wirelessly for distributed monitoring.
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Recycle old electronics responsibly.
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Build boxes to keep components safe and tidy.
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Use zip ties and labels to organize connections.
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Optimize AC loads for better energy use.