I am using https://gist.github.com/nevercast/1cc2e ... 013890992f
link.

I am facing issue due to debug of crystal output on DAC1 (IO25), but I didn't know the cause and solution for this.

Hello, I am using Arduino V1.0.6 SDK With ESP32 WROOM 32. I am currently facing issue of false interrupt in deep sleep on IO25, when external crystal is used. Is IO25 Used for external crystal debugging, or frequency output? how to disable this functionality, and use IO25 as interrupt to wakeup from...

Hello, As, ESP32-C6 is new, we didn't find more information about pinout selection, We are using ESP32-C6-WROOM1 Module in our Project. We have a query regarding using Strapping Pins. 1) As per the Modules's Datasheet, MTMS : Floating MTDI : Floating GPIO8 : Floating GPIO9 : Pull-up GPIO15 : Floatin...

#include "Arduino.h" #include "soc/rtc.h" #define uS_TO_S_FACTOR 1000000ULL /* Conversion factor for micro seconds to seconds */ #define TIME_TO_SLEEP 5 /* Time ESP32 will go to sleep (in seconds) */ RTC_DATA_ATTR int bootCount = 0; #include "soc/rtc_io_reg.h" #include "soc/sens_reg.h" #include "es...

Thanks for sharing your experience, Have you found any ready solution, or build esp32 image for external crystal?

ESP_LJH wrote: ↑

Tue Jan 03, 2023 6:17 am

You could mount 10M as initial value, if it does not work, you could decrease the value until crystal works.

Wow very interesting, thanks for giving this suggestion, I will never know this, if you don't tell me.

This post is of 2018, thereafter many updates has been taken place, so, if have any new news regarding this

Due to inaccuracy of internal RTC, I want to implement external 32.768kHZ Crystal.
So, how to implement this in Arduino code.
From Searching I found I need to recompile some libraries, but these posts are old, so, Is there any update to do this.

Thank You

Hello, I am working on the Project in which I am using ESP32 WROOM 32E and this Project will be Battery Operated.I want to implement external RTC crystal feature. As shown in attached image, R4 resistor value in the range of 5M ohm to 10M ohm. So how to choose proper value, can suggest specific valu...

Can we use ABS25-32.768KHZ-T ?
Which value for R4 is recommended? 5M or 10M?