The ESP32-P4 microcontroller platform, based on the RISC-V architecture, offers an alternative to Raspberry Pi for human-machine interface (HMI) development. It features two high-performance cores clocked at up to 400 MHz and a low-power core, designed to handle complex graphical tasks without a full Linux operating system.
The platform supports up to 32 MB of PSRAM and 16 MB of Flash, as seen in the CrowPanel Advance series. This memory capacity allows for the storage of graphical resources and frame buffers, such as a 1024x600 pixel display in RGB565 format, which requires approximately 1.17 MB per buffer.
Hardware-level graphics acceleration is provided by the Pixel Processing Accelerator (PPA), 2D-DMA, and MIPI-DSI interfaces. Developers can utilize the LVGL open-source library to build multi-screen interfaces, charts, and animations directly on the ESP-IDF and FreeRTOS firmware.
The ESP32-P4 lacks built-in Wi-Fi and Bluetooth, requiring external modules like the ESP32-C6 for wireless connectivity. It supports various communication interfaces, including UART, SPI, I2C, USB, Ethernet MAC, and TWAI, which can be adapted for industrial protocols like Modbus RTU or CAN.
Cost efficiency is a primary advantage of the ESP32-P4. According to retail pricing from October 2026, a ready-to-use CrowPanel Advance unit is approximately 2.6 times cheaper than a comparable Raspberry Pi setup with a touchscreen, excluding power supplies and enclosures.
The platform is available in various display sizes, including 5, 7, 9, and 10.1 inches. While it requires specific development for the embedded environment rather than porting existing Linux applications, it provides a compact, specialized solution for industrial HMI applications.
