The $25 Olimex ESP32-P4-PC Is Now Shipping — A RISC-V Board With HDMI, Ethernet, and 4 USB Ports

Bulgarian open-hardware company Olimex has started shipping what might be the most feature-packed sub-$25 board on the market. The ESP32-P4-PC is built around Espressif's ESP32-P4NRW32 SoC, and the I/O list reads like a board costing three times as much.

Feature Set

The board runs a 400 MHz dual-core RISC-V processor with 32MB PSRAM. For connectivity, you get HDMI video output, MIPI DSI display and MIPI CSI camera connectors, 10/100 Mbps Ethernet, four USB 2.0 Type-A host ports, a 3.5mm audio jack, microSD slot, UEXT expansion connector, and a 20-pin GPIO header.

Power options are flexible: USB-C, LiPo battery, or Power over Ethernet via an add-on module. The board supports 1080p H.264 video processing and 2D GUI rendering.

Fully Open Source

Every KiCad hardware design file, schematic, and the user manual are published on GitHub. This is not "source-available with restrictions" — it is genuine open-source hardware from a company with a long track record of community-friendly design.

Use Cases

At this price and feature set, the ESP32-P4-PC makes sense for smart displays, industrial HMIs, IoT gateways, and embedded projects that need video output and network connectivity without the overhead of a full Linux SBC.

The RISC-V architecture is a bonus for developers who want to work with the instruction set that is gaining momentum across the embedded and server spaces. Having HDMI, Ethernet, and four USB ports on a RISC-V board at this price point is genuinely unprecedented.

At 24.95 EUR, Olimex continues to punch well above its weight class.

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*Sources: CNX Software (Feb 17, 2026), Olimex blog (Feb 17, 2026), Liliputing (Feb 2026), shipping confirmed Feb 23, 2026*