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Step 1, after powering the box.

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The inside of the box, with the SG90 Servomotor and complete wiring.

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Another close-up of the inside of the box.

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Right side of the box with HC-SR04 Ultrasonic Range sensor and NTC Thermistor 10kohm.

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Left side of the box, with the PhotoResistor and the Power supply + Arduino USB port.

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All 4 steps completed. Box unlocked.

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Code.JPG

Arduino code.

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Mystery Box.JPG

Fritzing Schematics of wiring.

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Components.JPG

All the components you need.

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