(sorry about the poor english) Hello guys, I was working on a smart greenhouse project that utilize very chars and strings, ntp servers for telling time, bluetooth for app compability etc. I use a WEMOS D1 R32 Esp32. I specifically chose this board because i needed more storage for my projects. But…

Try with Huge App on partition scheme. [image]

You may want to visit this Arduino page , which describes how to reduce your sketch size and memory usage. You may also want to consider replacing your current board with an ESP32-S3 board that provides a more significant amount of flash. Adafruit has several boards with 8MB of flash. The downside i…

@kmin had a great suggestion. I selected large partition (no OTA), and here is the result: Sketch uses 1679524 bytes (80%) of program storage space. Maximum is 2097152 bytes. Global variables use 61484 bytes (18%) of dynamic memory, leaving 266196 bytes for local variables. Maximum is 327680 bytes.…

Still, would be interesting to know what take up that much memory. 80% of 4 MB is crazy, your sketch isn't that big, unless I've overlooked something.

Thank you guys very much, I tried out the code and it worked with no issues, also gonna state that I cannot afford another board right now because the econamical state in my country is bad so things get overpriced from our perspective. Still ty very much, appreciate it.

Well I have so much char and strings as I stated (as i remember) so it could be that. My normal code was just over 600 lines long but i shortend the code a little.

So the problem was in the code that you didn't post It would be interesting to see the full sketch that caused the problem

Well remember to mark the answer that solved the problem as Solution, have a nice night and come again :upside_down_face:

[image] MrY: Sketch uses 1679524 bytes (80%) of program storage space. Maximum is 2097152 bytes. [image] ledsyn: 80% of 4 MB is crazy Well, it's 80% of only 2MB. Apparently half the flash is "reserved" for OTA upgrades, or something. (although, even the non-OTA, no FS, partition sche…

Aha, a bit better but still a lot of code. I bet those wireless libs wants much memory..?

You got it. I did not have an real time module so I just used a ntp server for the time. Its not efficient but hey, it works.

How can I shrink my code?

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How can I shrink my code?

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