Forgix Packs RP2354 MCU and Trion T8 FPGA into a $50 Teensy-Size Board

Forgix Raspberry Pi Development Board

Adiuvo Engineering has introduced the Forgix, a compact Raspberry Pi development board that combines the Raspberry Pi RP2354 microcontroller with an Efinix Trion T8 FPGA. Designed in a Teensy-inspired form factor, the board targets developers who want to combine traditional microcontroller programming with programmable logic in a single, compact platform. Despite its small 36 × 18 mm footprint, the board includes onboard flash, PSRAM, USB-C connectivity, and debugging support.

The combination of the RP2354 MCU and Trion T8 FPGA allows developers to split workloads between software and hardware. The RP2354 handles firmware, communication, and peripheral control, while the FPGA enables custom digital logic, signal processing, and hardware acceleration. This approach makes the board suitable for embedded development, hardware prototyping, custom interfaces, and educational FPGA projects.

Previously, we covered several Raspberry Pi development boards, including the Adafruit Feather RP2350, P42 Pico2 M.2, and Waveshare RP2350-One USB. If you’re interested in similar boards, feel free to check out those articles as well.

Forgix Board

Forgix Board Specifications:

• SoC: Raspberry Pi RP2354B microcontroller
  • Dual-core Arm Cortex-M33 running at up to 150 MHz with Arm TrustZone and Secure Boot
  • Dual-core 32-bit Hazard3 RISC-V processor at up to 150 MHz
  • Supports 2× Arm cores, 2× RISC-V cores, or one Arm core with one RISC-V core
• Memory:
  • 520 KB on-chip SRAM
  • 2MB stacked in-package flash
  • 16 Mbit QSPI PSRAM (APS1604M)
• FPGA: Efinix Trion T8F49
  • 7,384 Logic Elements
  • 8 embedded multipliers
  • 122.88 Kbit internal RAM
  • 4 global clocks from GPIO
  • Integrated PLL
  • Low-power oscillator
• USB: USB Type-C port for power and programming
• Expansion:
  • Through-hole and castellated pads in a Teensy-compatible footprint
  • UART and GPIO available through RP2354 pins
  • Additional FPGA I/O pins for custom logic and interfaces
• Debugging: Tag-Connect TC2030 SWD interface
• Miscellaneous:
  • Push button
  • RGB LED
  • External ECS-2520MV oscillator
• Power:
  • 5V input through USB-C
  • 3.3V I/O
  • 1.1V FPGA core supply
• Dimensions: 36 × 18 mm

Adiuvo Engineering provides open-source resources to help developers start working with the board. The company has released KiCad hardware design files, PDF schematics, RP2354 firmware written in C, a Python-based bitstream loader, and a Plasma LED reference RTL project for the Efinity development environment. While the official documentation remains limited, these resources give developers access to the complete hardware design and software stack for customization and experimentation.

The Forgix Raspberry Pi development board is available directly from Adiuvo Engineering for $50, excluding shipping and taxes.

Images used courtesy of ADIUVO