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Isn't the esp8266 much lower power than the esp32?


No the ESP32 uses less power. In deep sleep it uses about a quarter of the current. It also has an extra low power processor (ULP) core than can run in a sleep state and do IO without even waking up the Tensalica cores. The ESP32-S2 actually has a Risk-V core that runs as a ULP. As I said, it's better in every way.


This is quite a good write up of the difference. https://blog.voneicken.com/2018/lp-wifi-esp-comparison/




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