alt Hacker NewsAren't ESP32s way more power hungry than typical BT-only parts though?
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the__alchemist • last Wednesday at 1:38 PM
Does this apply to C-3 and C-5 as well?
Aren't ESP32s way more power hungry than typical BT-only parts though?
Does this apply to C-3 and C-5 as well?
Not insanely for a smart watch. Your smart watch battery will be something like 200mAh, so for 20 hours you need to average 10mAh. With zero optimisation, screen refresh rate at 30+fps, I have smart watch chewing 30mAh.
Getting down to 10mAh is not so bad. If you're not actively driving the display, you can under-clock significantly [1], if you're not using WiFi you can turn the modem off [2].
[1] https://docs.espressif.com/projects/esp-idf/en/stable/esp32/...
[2] https://docs.espressif.com/projects/esp-idf/en/stable/esp32/...