Find any of the dev kits that have PSRAM. Every devkit has a schematic.

I had the same problem. What worked for me was to delete .platformio folder in your users folder. The next time you open platformIO it will reinstall everything and then it worked properly.

Any of the ESP32 devices can do what you want. The ESP32-S3 IMHO has the best bang for buck. I suggest you start with the ESP32-S3-DevKitC-1 v1.1 https://docs.espressif.com/projects/esp-idf/en/latest/esp32s3/hw-reference/esp32s3/user-guide-devkitc-1.html The head over to the examples to get a leg up...

What you want is VSCode portable. Go here: https://code.visualstudio.com/download# Grab the .zip for your computer. What I have done is this. Create a folder ESP_5.1, then create a folder inside there named VSCPortable. Unzip the VSCodeportable to this folder. You also need to add another folder nam...

The OTA i created for myself also uses a web page with a progress bar.
What i did was have the webpage itself show the progress by what it has sent so far, and not have it updated by the ESP32.

228k is nothing for a 8MB part. You have to keep in mind this is not an Atmega, but uses an RTOS and has some overhead.
Also Arduino also adds more overhead as well. If you really want to shrink things down, use IDF.

look in the examples folder, and check out the SPI examples.
https://github.com/espressif/esp-idf/tr ... eripherals

If you do this and its still high, something else is going on.

gpio_reset_pin(GPIO_NUM_20); gpio_set_direction(GPIO_NUM_20, GPIO_MODE_OUTPUT);gpio_set_level(GPIO_NUM_20, LOW);

Thanks, but for the version that all are empty. There is nothing before nvs, so how does it know where to start ?

A much better A/D converter. Pins for Vref & power to A/D converter.