ESP8266-based simple programmable controller designers face a crucial decision regarding memory allocation. According to an article by Zhang Zhuyue, the ESP8266's 96KB RAM space can be challenging when dynamically allocating memory. This approach may affect program execution efficiency and reliability, especially with complex code and multiple functions. Instead, Zhuyue opted for fixed memory allocation, stretching the available space to its limits.

Source: https://dev.to/zhangzhuyue/why-i-dont-dynamically-allocate-ram-memory-for-esp8266-based-simple-programmable-controller-2d3l