What is the difference between a raspberry pi and an esp32? What is better suited for interfacing with a SD card?
The Raspberry Pi is a single-board computer that runs a full-fledged operating system, while the ESP32 is a microcontroller that is typically used for IoT applications. The Raspberry Pi is better suited for interfacing with an SD card as it has a full-fledged operating system and a large number of libraries available for interfacing with various peripherals, including SD cards. The ESP32, on the other hand, has limited memory and processing power, and may require more effort to interface with an SD card.
How could one improve memory capacity for ESP32?
Here are a few ways to improve memory capacity for ESP32:

Optimize code: Reduce the size of the code by removing unnecessary libraries, functions, and comments. This can free up memory space for the program to run more efficiently.

1. Use external memory: The ESP32 can be connected to external memory devices such as an SD card or flash memory to increase the total memory capacity.

2. Overlap memory: The ESP32 has two types of memory, SRAM and Flash memory. Overlapping the usage of both memory types can be an efficient way to optimize memory usage.

3. Use dynamic memory allocation: Dynamic memory allocation is a way of allocating memory while the program is running. This method can help reduce the overall memory footprint of the program.

4. Store data in the cloud: If the ESP32 is connected to the internet, data can be stored on remote servers in the cloud instead of on the device itself.