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The mailbox with a built-in "scale" that notifies me by e-mail when a mail arrives has been completed!

I have completed a mailbox that detects the arrival of mail by weight and notifies me by e-mail.Weighing with HX711Using...

Make a power supply circuit (step-up/step-down DCDC converter) to run ESP32 on about two batteries.

ESP32 is a microcontroller that operates at about 3V to 3.3V. I'm going to make a DCDC converter circuit to run on about...

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