ESP32-S2-Pico-M and ESP32-S2-LCD are small in size, rich in peripheral interfaces, integrated with low-power Wi-Fi system-on-chip (SoC) and large-capacity memory, and support Raspberry Pi Pico expansion board ecosystem development board. It has hardware encryption accelerator, RNG, HMAC and digital signature modules to meet the security requirements of the Internet of Things. A variety of low-power working states meet the power consumption requirements of application scenarios such as the Internet of Things (IoT), mobile devices, wearable electronic devices, and smart homes.