SCINTIX P4 is an open-source ESP32-P4 compute module that fits Raspberry Pi CM4 and CM5 carrier boards, combining Wi-Fi 6, Ethernet, camera and display interfaces in a compact design.
The alternative way for the development of ESP32-P4 based products provided by RELOC is the SCINTIX P4. Where the microcontroller, memory, wireless communication, and power management features are combined in a form factor of a compute module which can be used with Raspberry Pi Compute Module 4 and Compute Module 5 carrier boards. The advantage of this approach is the opportunity for engineers to utilize existing carrier boards instead of creating a whole new board around the microcontroller.
It uses the ESP32-P4NRW32X from Espressif which is a dual-core RISC-V processor with clock speeds up to 400MHz as well as features artificial intelligence instructions and a floating-point unit. This board is made up of 32MB PSRAM, 32MB NOR flash, and ESP32-C6. It will control wireless communication. The chip contains 2.4GHz Wi-Fi 6, Bluetooth 5, and IEEE 802.15.4 radio that will be used to connect devices that require ZigBee and Thread connectivity. Additionally, it features Microchip KSZ8091RNACA Ethernet PHY that provides 10/100 Mbps wired network capability.
The module is of size 55 × 40 mm using two 100 pins Hirose board to board connectors on Raspberry Pi CM4/CM5 form factor. It provides the interface of MIPI CSI Camera and MIPI DSI Display along with USB 2.0 OTG, Ethernet, microSD, and GPIOs through carrier boards which support those interfaces. Hence developers can play around with cameras based application, display interfaces, control systems, and multimedia using those interfaces without developing connections. However, the module does not provide the same interfaces as a Raspberry Pi Compute Module: HDMI and PCIe are not supported, while USB and Ethernet are limited to USB 2.0 and 100Mbps respectively.
RELOC has tested SCINTIX P4 with several Raspberry Pi and third-party carrier boards, including the official CM4 and CM5 IO boards and selected Waveshare designs. Its public repository includes ESP-IDF examples for basic operation, Ethernet throughput testing, wireless connectivity and USB host functions. Additional demonstrations include an ESP-Brookesia smartphone-style interface and an AI-agent application. Developers can flash the module independently through its USB-C connector or mount it on a compatible carrier to access additional interfaces. The examples use ESP-IDF, with the getting-started guide specifying version 6.0.1 for the documented tests.
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