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“Smart doorbells are an amazing tool but still an expensive one (~$200)! Today in this Instructables, we propose to help you build your own smart home doorbell for less than $40. We will guide you through the basic core steps to build the doorbell with simple components and no need for coding or manual skills. If you’re passionate about woodwork and/or 3D printing, you can of course go further and give your doorbell a beautiful case (if you do so please share with us!). For the sake of simplicity, we will keep our explanations to the “raw” version of the doorbell.”

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