Reed door switch with deep sleep

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go for an esp32 with deep sleep. mine last for months with just one 18650.

see here:

Reed Door Sensor (battery powered ESP32 with esphome(yaml))

Hi Folks! I just finished my door sensor with esphome and some cheap reed sensors. Total cost for this project is about 15 €. I’m using a WEMOS LOLIN32 ESP32 running on a 18650 Battery soldered to a strip board. Positive output is connected with an ADC Pin (34) and the reed sensor itself is connected with +3V and Pin 14 . Pin 14 is defined as a binary GPIO sensor and also as the wakeup pin for the ESP itself. If no motion is detected the ESP32 will sleep for 6 hours and wake up for 30 seco…