Proffieboard V3.9 Open Source Lightsaber Sound Board - Tested

In this review of the Proffieboard V3.9 the bottom line is simple: this is the sound board for hobbyists and builders who want advanced motion-driven audio and reliable power handling in a tested, assembled package. The Proffieboard V3.9 stands out because it combines a faster STM32-based CPU and a motion coprocessor IMU with a 3 watt amplifier and USB charging, delivering smoother swing and richer effects than many older boards. For custom saber builds that need an open source platform and plenty of I/O, this board is a clear fit.

Key Features

• 80MHz ARM processor: A faster CPU provides more headroom for complex soundfonts and smoother effect processing during swings and clashes.
• Motion coprocessor IMU: The dedicated motion sensor yields more realistic and responsive swing detection for natural sound transitions.
• 3W mono amplifier: Built-in amplification gives clean, portable sound without requiring an external amp for most builds.
• USB charging with 450mA: Integrated charging simplifies battery maintenance and supports convenient charging from common USB sources.
• Expanded memory and RAM: 512kb flash and 160kb RAM allow more presets and make mp3 and echo effects feasible on-board.
• Six MOSFET outputs: Multiple MOSFETs let the board control external LEDs and blade effects while supplying a generated 5V rail when audio is active.

Who It's For

The Proffieboard V3.9 is aimed at experienced builders and modders who value open source flexibility and advanced motion-synced audio. It is ideal for custom lightsaber projects where realistic swing, deeper memory for presets, and integrated amplification matter.

Those who should look elsewhere include beginners who want a plug-and-play decorative saber with solder-free installation or users who require stereo output or very high-power audio solutions beyond the board's 3 watt mono amplifier. It assumes some familiarity with wiring and saber electronics.

Pros & Cons

Pros

• Open source firmware and stronger CPU enable advanced soundfonts and smooth swing behavior.
• On-board 3W amplifier and USB charging simplify build complexity and daily use.
• Expanded flash and RAM support more presets and effects such as mp3 and echo.
• Multiple MOSFETs provide flexible LED and blade control for custom lighting setups.

Cons

• Mono 3W amplifier may be limiting for builders seeking stereo or high-volume audio setups.
• No included 16GB micro SD card, so users must source storage for large sound libraries separately.

Specifications

Processor	80MHz STM32 ARM CPU
Motion	Dedicated motion coprocessor IMU
Audio Amplifier	3 watt mono amplifier
Charging	USB charging at 450mA
Memory	512kb flash, 160kb RAM
MOSFETs	6 MOSFET outputs for external LEDs
Power	BATT+ input 2.6 to 5 volt; on-board generated 5V when sound plays

Our Verdict

The Proffieboard V3.9 is a strong choice for experienced lightsaber builders who need an open source, feature rich sound board with improved CPU performance, ample memory, and integrated audio and charging. It represents good value for custom projects where responsive motion effects and flexible LED control matter, though prospective buyers should plan to add their own micro SD card and accept mono audio.

Frequently Asked Questions

Does the board include a micro SD card?
No, the Proffieboard V3.9 is sold without the 16GB micro SD card, so buyers should supply storage for soundfonts and presets.

Can the board drive LEDs and the blade?
Yes, the board includes six MOSFET outputs to control external LEDs and blade effects and generates a 5V rail when sound is playing.

Is the board ready to use out of the box?
The unit arrives assembled and tested, but it assumes some electronics knowledge for installation and configuration within a saber build.