Month

April 2018

Easy battery powered Mailbox Door IoT sensor using ESP32

This post is how I took my rusty (literally) old mailbox and made it into a battery powered smart mailbox (an IoT device) , that sends you an SMS  (text messagE) or MQTT alerts, and in the process  how I  learned about Arduino and particularly  the ESP32 chip which lets…

A post showing how the headings look like

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