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Home cool diy projects DIY diy craft ideas diy projects do it yourself projects Making a simple fire alarm

Making a simple fire alarm

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Hi I made a simple fire alarm using ir photo diode and a transistor switch. https://youtu.be/vzTpTXbV3Kw via /r/DIY https://ift.tt/2PdLP9u
cool diy projectsDIYdiy craft ideasdiy projectsdo it yourself projects
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