Firduo VX3 Waterproof Remote UART & PWM for Efoil & Electric Surfboard

🌊 Control Your Ride. Whatever the Conditions.

The Firduo VX3 is a professional-grade IP67 waterproof remote controller designed for eFoil, electric surfboard, RC boat, and electric skateboard applications. With a 1.6-inch high-resolution display showing real-time GPS, motor power, MOS temperature, and throttle progress, the VX3 gives you complete situational awareness on the water.

Supporting both UART and PPM/PWM control modes, the VX3 is compatible with VESC-based and non-VESC ESCs alike. The 1500mAh battery with wireless charging, cruise control in E-surf mode, and ESC failure reporting make it the most feature-complete remote in its class. Receiver included.

⚡ Key Features

• ✅ IP67 Waterproof — fully sealed; Waterproof performance can be referenced by immersion test.
• ✅ 1.6-inch Super Clear Display — shows GPS, motor power, MOS temperature, throttle progress bar, and basic telemetry
• ✅ UART + PPM/PWM Dual Mode — compatible with VESC and non-VESC ESCs
• ✅ ESK8 Mode / E-Surf Mode — switch freely between electric skateboard and electric surfboard control profiles
• ✅ Cruise Speed Control — available in E-surf mode for hands-free sustained speed
• ✅ ESC Failure Reporting — detects and alerts possible ESC failures in real time
• ✅ 1500mAh Battery — extended session life; 
• ✅ Wireless Charging — no exposed charging port; fully sealed charging system
• ✅ 2.4GHz Reliable Signal — stable long-range control in open water environments
• ✅ Receiver Included — complete plug-and-play kit; no additional receiver purchase required

📋 Full Specifications

📦 What's in the Box

• 1× Firduo VX3 Waterproof Remote Controller
• 1× Receiver (with signal cable)
• 1× Wireless charger (including power cord and charging dock)
• 1× Anti-loss wristband
• 1× Instructions for use

🔗 Compatible Builds & Recommended Pairings

• eFoil / Hydrofoil — UART mode for full telemetry with VESC-based ESCs
• Electric Surfboard / Jetboard — E-surf mode with cruise control for sustained speed
• Electric Skateboard / Longboard — ESK8 mode for precise throttle and brake control
• RC Boat / USV — PPM/PWM mode for non-VESC ESC compatibility
• Recommended ESC (VESC): Firduo FD75200 75V 200A Water-Cooled VESC — full UART telemetry, 200A continuous
• Recommended Thruster: Firduo TUNA A1 1500W Underwater Thruster — 18.5KGF, passive water-cooled, CW/CCW
• Recommended Motor: Firduo 65162 120KV Waterproof Motor — IP68, 7.2KW, direct-drive eFoil

🛠️ Setup Guide

1. Select control mode — decide between UART (recommended for VESC ESCs — provides full telemetry including motor power, temperature, and GPS data on the display) or PPM/PWM (for non-VESC ESCs — standard RC signal, simpler setup). UART mode unlocks all display features.
2. Connect the receiver to your ESC — for UART mode: connect the receiver's UART TX/RX wires to your ESC's UART port (TX→RX, RX→TX). For PPM mode: connect the receiver's signal wire to your ESC's PPM input. Power the receiver from the ESC's 5V BEC output (red = +5V, black = GND).
3. Mount the receiver — secure the receiver in a dry, protected location inside your board or enclosure. Keep the antenna away from metal components and motor wires to avoid signal interference. The receiver is not waterproof — it must be inside a sealed enclosure.
4. Power on and pair — power on your ESC/system first, then press and hold the VX3 power button until the display lights up. The remote and receiver pair automatically on first use. If pairing fails, please refer to the user manual and try pairing again.
5. Select operating mode — on the VX3 display, navigate to Settings and select ESK8 mode (for electric skateboard) or E-surf mode (for eFoil/surfboard). E-surf mode enables cruise control — hold the throttle at desired speed and activate cruise to maintain it hands-free.
6. Configure VESC (UART mode) — in VESC Tool, set the UART baud rate to match the VX3 receiver (typically 115200). Enable UART input in the App Configuration. The VX3 will then display real-time motor data from the ESC.
7. Maintenance after saltwater use — rinse the VX3 remote with fresh water or soak in fresh water for at least 1 minute after every saltwater session. This removes salt residue and significantly extends the service life of the remote and its seals.

❓ FAQ

Q1: What's the difference between UART and PPM/PWM mode, and which should I use?
UART mode is a digital communication protocol that provides full two-way communication between the VX3 and your ESC — enabling real-time display of motor power, MOS temperature, GPS, and ESC fault codes on the VX3 screen. It requires a VESC-compatible ESC with a UART port. PPM/PWM mode is a standard analog RC signal — simpler to set up and compatible with any ESC that accepts PPM input, but provides no telemetry data on the display. Use UART if you have a VESC ESC; use PPM for everything else.

Q2: Is the VX3 truly IP67 waterproof? Can I drop it in the water?
Yes. The VX3 is rated IP67 — protected against immersion up to 1 meter for 30 minutes under standard testing conditions. Firduo's own test confirmed ~50 minutes at 50cm depth. The wireless charging system means there are no exposed charging ports that could leak. After saltwater use, always rinse with fresh water or soak for at least 1 minute to remove salt residue and protect the seals long-term.

Q3: Does the VX3 work with non-VESC ESCs?
Yes. In PPM/PWM mode, the VX3 works with any ESC that accepts a standard PPM or PWM signal input — including hobby ESCs, proprietary ESCs, and the Firduo TUNA A2 built-in ESC. In this mode, the display will show basic information but not full VESC telemetry. For full display functionality (motor power, temperature, GPS), a VESC-compatible ESC with UART output is required.

Q4: What is cruise control and how does it work in E-surf mode?
Cruise control in E-surf mode allows you to lock the throttle at your current speed without holding the trigger. Once activated, the ESC maintains the set power output until you squeeze the trigger again or release cruise. This is particularly useful for long eFoil sessions where sustained speed is desired without hand fatigue. Cruise control is only available in E-surf mode — not in ESK8 mode.

Q5: The display shows an ESC failure alert — what does this mean?
The VX3's ESC failure reporting feature (available in UART mode with VESC ESCs) monitors the ESC's internal fault codes in real time. If the ESC detects an over-temperature, over-current, low-voltage, or other fault condition, the VX3 display will show an alert. This allows you to stop and investigate before a minor issue becomes a major failure. Common causes include: battery voltage too low, motor current limit exceeded, or ESC overheating. Check your VESC Tool fault log for details after receiving an alert.