Hi.
Thanks for the info.
Regards,
Sara

I think this task can be easily achieved by using the ClientFTP library on the ESP32

#include “ESP32FtpServer.h”

the lib code can be downloaded from GitHub at this link:

github.com/techworldthink/ESP32_FTPSERVER_SD?source=post_page—–7bd8da10c8c0——————————–

so you can access to your SD data through the FTP from the local network. Access can be done directly in Windows Explorer or using a client like FileZilla or by simple Python script based on the ftplib module.

Hope it help.
BR

You have to check if your SD card module have or not the on board regulator, if not you can power the SD card directly from the 3.3V of the ESP32, if the regulator is on board you have to power the SD card module by means of the 5V from the ESP32 board.
BR

Good question.
It was a mistake. I’ll check it out.
Regards,
Sara

if(!SD.begin(SD_CS)) {
Serial.println(“Card Mount Failed”);
return;
}

…….

Serial.println(“Initializing SD card…”);
if (!SD.begin(SD_CS)) {
Serial.println(“ERROR – SD card initialization failed!”);
return; // init failed
}

I have problem with appending file.

My application is to know how much hot water there is in the insulated hot cylinder. I have five sensors: Cylinder Bottom, Cylinder Middle, Cylinder Top, Cold pipe, and Hot pipe. They show on a 2 line 16 char LCD display and are also saved to SD. Initially I will save the data every minute so I can see the optimal duration to heat the water with gas, solar PV, or grid. Also the others in the household can see if there is sufficient hot water without turning on the heating.

Because I wanted to keep the LCD display going I did not want to use the sleep method you demonstrated. I had to figure out what to put in the Loop and how to call the functions from within the loop. I am new to this but I got there.

Thanks again

Yes.
That’s right.
Regards,
Sara

Best Regards and thank you very much for your tutorials !

Thank you this great tutorial and others. I was able to make a battery powered temperature logger with two ds18b20 waterproof probes, measuring temperatures within a climate controlled container. I did come across an issue when my Arduino IDE detected a newer version of the NTPClient. I updated, and the code no longer compiled. I was able to revert to the Taranais version, but now I keep having to “ignore” the new version update. Do you know how tell Arduino IDE to ignore the newest version on NTPClient?