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A Raspberry Pi laser tripwire (Raspberry Pi Foundation) 조립하기

A laser pointer shines down a straw onto a light-dependent resistor; when someone breaks the beam the Raspberry Pi sounds a buzzer or… · 부품 2개 · 5단계 · Raspberry Pi Foundation 작성

Gather the parts
Prototype the light sensor
Make some noise
Build and mount it
Start it at boot

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