The Ultimate Hardware Mashup: Scintix P4 Brings ESP32-P4 to Raspberry Pi Carrier Boards

What happens when you mix the ultimate low-power microcontroller family with the world's most popular single-board computer ecosystem? You get the Scintix P4.

Developed by hardware engineer to_the_sun, the Scintix P4 is a clever new system-on-module (SoM) that takes Espressif’s highly anticipated, high-performance ESP32-P4 RISC-V microcontroller and shrinks it down onto a board that mimics the exact physical footprint of a Raspberry Pi Compute Module 4 (CM4) or Compute Module 5 (CM5).

This means you can pop a low-power, real-time microcontroller straight into standard, readily available Raspberry Pi carrier boards.

Why the ESP32-P4?

If you've been following Espressif, you know the ESP32-P4 is a massive departure from their usual lineup. It leaves behind the built-in Wi-Fi and Bluetooth to focus heavily on raw computational speed, security, and advanced multimedia processing.

By dropping it onto a CM4/CM5 form factor, you unlock a highly efficient system that bypasses the long boot times, high power draw, and operating system overhead of a typical Linux-driven Raspberry Pi setup. Instead, you get instantaneous boot times and bare-metal control, backed by plenty of modern I/O.

Key Technical Specifications

The Scintix P4 utilizes dual high-density board-to-board connectors to interface seamlessly with Pi-compatible carrier ecosystems. Here is a breakdown of what this compact module brings to the table:

Feature	Specification Details
Core Processor	Espressif ESP32-P4 dual-core RISC-V processor clocked up to 400 MHz
Memory	Integrated 16MB or 32MB PSRAM
Storage	Onboard SPI flash memory
Form Factor	Exact Raspberry Pi CM4 / CM5 physical dimensions
Connectors	Dual high-density mezzanine connectors for carrier board mating

Pin Mapping Challenges & Realities

While the Scintix P4 is a massive win for hardware flexibility, it is important to note that it isn't a magical, 100% drop-in functional replacement for a Raspberry Pi.

Because a Raspberry Pi Broadcom SoC and an Espressif ESP32 microcontroller have completely different internal architectures, the pins don't map perfectly 1:1.

• The Good News: Power delivery lines, standard ground pins, and basic serial communication protocols (like standard I2C, SPI, and UART lines) map over flawlessly to their standard Pi equivalents.
• The Catch: Complex high-speed interfaces—like the exact PCIe lanes or native HDMI video out pipelines found on a real Raspberry Pi—won't function natively out of the box because the ESP32 silicon simply does not have those specific hardware controllers.

If you are using custom carrier boards or utilizing basic GPIO, display lines, and sensor arrays, it makes swapping between a heavy-duty Linux board and a light-weight microcontroller seamless.

Open-Source and Ready for Developers

True to the spirit of the maker community, the Scintix P4 is fully open-source hardware. The KiCad design schematics, PCB layout files, and initial documentation are completely free to browse and modify on the project's GitHub repository.

Whether you are looking to build ultra-responsive HMI touchscreens, industrial sensor gateways, or low-power automation hubs, the Scintix P4 offers an incredibly creative shortcut to utilizing top-tier Espressif silicon within the robust, battle-tested world of Raspberry Pi accessories.