this is a STM32F411 development kit for AI and UI development, Cheap, small and powerful.
A powerful Smart Watch based on STM32, FreeRTOS, LVGL. It only cost ¥80 RMB ( $12 USD ).
Implementation of http, https, socks4/socks4a, socks5 proxy protocols using modern c++ (使用现代 c++ 实现 http、https、socks4/socks4a、socks5 代理协议。)