If you rely on the internal oscillator (a simple RC), it should have a relative error of up to 10% (if I recall well). Maybe ESP32 can be slightly better, but in general RC oscillator has a significant drift. So if it deep sleeps few hours, it can drift *minutes*.

Hi,
Is there an approximative date for the release of ESP32-C6? Even a quarter of the year will be enough.

Many thanks for replying. So if esp32 didn't gain 2M PHY and coded PHY, where is the improvement? Is it just marketing?

Ok thanks for the information!

Recently I had found this official news on espressif website https://www.espressif.com/en/news/BLE_ ... tification. So it seems that ESP32 is shipped as a BLE 5.0 device. Am I misinterpreting the article?

Hi all, I was going to buy some ESP32-C3, however it seems that is not easy to find on the market. However, I had found them on mouser.com https://www.mouser.it/Search/Refine?Keyword=esp32-c3 https://www.mouser.it/ProductDetail/Espressif-Systems/ESP32-C3-WROOM-02-N4?qs=sGAEpiMZZMu3sxpa5v1qrhrB%252BB...

I had continued the testing of various configuration of RTC to get the accurate date. the sketch I used is derived from the "sntp" esp-idf example and basically do the following: First iteration: sync time with NTP print time Deep sleep fom 15 seconds Any other iteration: print time Deepsleep for 15...

However the calibration is performed only at the start up, isn't it? Because if the operating temperature of the ESP32S2 varies the drift will vary accordingly, and calibration cannot compensate that.

Hi, I was testing ESP32-S2 WROOM module, and I was trying external RTC crystal to minimize the dependency on NTP and WiFi connection. Also, to save energy, the rtc will be used for a more accurate deep sleep time. I had tested the gettimeofday() function with ONLY RTC source 90khz (internal RC) and ...

Hi all, https://github.com/fabiuz7/Dimmable-Light-Arduino is the library I first tried (but couldn't get to work on the rev. 0 part). I didn't use it in the end, but it is worth looking at. Finally I can say that this library is working also for ESP32 rev0, (thanks -rudy-). Also thanks to mention an...