In my doorbell project, I want to use a MKR1000 and insert it in a regular doorbell circuit. I want the MKR1000 to power itself from the installed doorbell itself. I have two questions: Doorbells commonly run between 8 and 24 volts, what is the most effective/safe way to step it down to the 3.3 vo…

Using MKR1000 in a doorbell circuit and controlling the chime

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