Deep sleep: Use RTC memory to store data (ESP32 + Arduino series)

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In deep sleep, the ESP32 powers down its main memory so all the contents is lost. You can, however, save some data in RTC memory. This is kept powered on during deep sleep and is ideal to keep some data around for when the ESP32 wakes up later.

⚡️Other videos in this series:
https://www.youtube.com/playlist?list=PLzvRQMJ9HDiQ3OIuBWCEW6yE0S0LUWhGU

(Everything you need to know about programming the ESP32 by using the Arduino Framework)

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