Downloads

Resources & Downloads

Documentation, firmware, SimLinkHub companion software, and assembly guides for the Park Road Designs ecosystem.

Documentation

User Guides & Reference

Technical documentation for PRD-NODE and the breakout board family.

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PRD-NODE User Guide v1.0
Pin reference, power architecture, CAN bus setup, SPI2 header, bridge configuration, firmware development, and bring-up procedure.
PDF · Version 1.0 · 2026
Coming soon
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PRD-BO-TRIMFLAPS Assembly Guide
NODE pin mapping, screw terminal wiring, debounce component values, firmware notes for PA15/PB3 JTAG remap.
PDF · Version 1.0 · 2026
Coming soon
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PRD-GP-STM User Guide v1.0
Legacy documentation for the PRD-GP-STM board. Useful technical reference for the STM32F072RBT6 peripheral architecture.
PDF · ~2MB · Version 1.0 · 2025
v1.0 Download
Software

SimLinkHub for Windows

Bridges PRD hardware and Microsoft Flight Simulator. Required for PRD-225 and future NODE-based radio panels.

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SimLinkHub for Windows
Connects PRD-225 to MSFS via SimConnect. Live frequency sync, nearest airport database, volume control. Runs in the background, no configuration needed.
Windows 10/11 64-bit · .NET 10 Runtime required · Installer (.exe)
Coming soon
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.NET 10 Runtime (required by SimLinkHub)
Install before running SimLinkHub.
Windows 10/11 · Free · Microsoft
Free
Firmware

PRD-NODE Firmware

Flash via USB DFU — no ST-LINK required.

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PRD-NODE Firmware v1.0.0
CAN peripheral firmware — encoder inputs, ADC, servo PWM, switch debouncing, CDC SLCAN bridge on VBUS detection.
.hex · STM32F072RBT6 · Version 1.0.0
Coming soon
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STM32CubeIDE Source Project
Full source — CAN bus driver, USB CDC, encoder TIM, servo PWM, ADC DMA, JTAG remap for PA15/PB3, example device configurations.
.zip · STM32CubeIDE · GitHub
Coming soon
USB DFU upload (no programmer required)

Press BOOT, then press and release RST, then release BOOT. Connect USB. Open STM32CubeProgrammer, select USB DFU, load .hex and click Download. Press RST to run.

Project Guides

Assembly Guides

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Cessna 172 Flaps Lever Assembly Guide
Print settings, parts list, step-by-step assembly, wiring to PRD-NODE via PRD-BO-TRIMFLAPS, and MobiFlight configuration alternative.
PDF · 2025
Available Download

Need help getting started?

Happy to help with setup, firmware, and wiring questions.

Contact Us