RadioMaster TX16S MK3 ELRS Gemini Remote Controller User Manual

1. Introduction

This manual provides essential information for the safe and efficient operation of your RadioMaster TX16S MK3 ELRS 2.4GHz/900MHz Dual Band 16Ch Gemini Remote Controller. Please read this manual thoroughly before using the device.

The TX16S MK3 is a high-performance remote controller powered by an STM32H7 chip, featuring a 5-inch 480x800 IPS touchscreen and a Gemini-X dual-band ExpressLRS system for reliable control across 2.4GHz and 900MHz bands. It includes V6 quad-bearing Hall-effect gimbals and programmable LED gimbal light rings.

2. Safety Information

Important: Always read the instructions before use. Failure to follow safety guidelines can result in injury or damage to the product.

• Ensure the device is used in a safe environment, away from obstacles and people.
• Always perform pre-flight checks before operating any remote-controlled aircraft or vehicle.
• Keep the device away from water and extreme temperatures.
• Use only approved batteries and charging methods.
• Recommended age for use is 17 years and up.

3. What's in the Box

Upon unpacking, verify that all items listed below are present:

• TX16S MK3 Radio Controller
• Carry Case
• 18650 Battery Tray Only (Batteries not included)
• Replacement Shoulder Panels
• Type-C Cable
• Screen Protector
• 1.5mm Hex Wrench
• Low Tension Gimbals Springs
• Gimbal Stick Set Screws
• Nylon Neck Strap (Lanyard)
• RadioMaster Sticker Set

4. Setup

4.1 Battery Installation

1. Open the battery compartment cover on the back of the controller.
2. Insert two 18650 Lithium-ion cells or a 2S 7.4V 6200mAh Lipo battery into the battery tray. Ensure correct polarity. (Batteries not included)
3. Close the battery compartment cover securely.

4.2 Initial Power On and Screen Protector Application

1. Press and hold the power button located between the gimbals to turn on the controller.
2. Follow any on-screen prompts for initial setup.
3. Carefully apply the included screen protector to the 5-inch IPS touchscreen.

4.3 Gimbal Adjustment

The V6 quad-bearing Hall-effect gimbals offer external adjustments for travel, centering, and tension. Use the included 1.5mm Hex Wrench and Gimbal Stick Set Screws to fine-tune the feel to your preference. Low Tension Gimbals Springs are also included for customization.

5. Operating Instructions

5.1 Basic Controls Overview

The TX16S MK3 features a classic control layout with intuitive placement of switches, sliders, and potentiometers. Refer to the diagram above for a detailed overview of each control element.

• Gimbals: Control primary flight surfaces (e.g., aileron, elevator, rudder, throttle).
• Switches (SA, SB, SC, SD, SE, SF, SH): Assignable for various functions like flight modes, gear, or auxiliary channels. SH is a momentary switch.
• Dials (S1, S2): Assignable proportional controls.
• Sliders (RS, LS): Rear-mounted proportional controls.
• Buttons (RTN, PAGE>, PAGE<, TELE, SYS, MDL): Navigation and menu access.
• Scroll Wheel: For menu navigation and value adjustment.

5.2 Using the Touchscreen Display

The 5-inch 800x480 IPS touchscreen provides a clear and responsive interface for navigation and programming.

• Tap icons and menu items to select.
• Swipe to navigate between pages or lists.
• Use the scroll wheel for fine adjustments or to scroll through long lists.
• The automatic backlight adjustment optimizes screen visibility in various lighting conditions.

5.3 ExpressLRS Gemini System

The integrated Gemini-X dual-band ExpressLRS system utilizes dual LR1121 transceivers for ultra-reliable, low-latency control across both 2.4GHz and 900MHz bands. This ensures exceptional signal stability and link quality.

For detailed binding and configuration of the ExpressLRS system, refer to the official ExpressLRS documentation or the RadioMaster support website.

5.4 Motion Sensor Functionality

The built-in motion sensor allows you to trigger switches, pan/tilt cameras, or telemetry callouts by simply tilting your radio. This feature can be configured within the radio's settings.

6. Maintenance

• Cleaning: Use a soft, dry cloth to clean the exterior of the controller. Avoid abrasive cleaners or solvents.
• Storage: Store the controller in its carry case in a cool, dry place when not in use.
• Battery Care: For optimal battery life, avoid fully discharging the batteries. If storing for extended periods, charge batteries to approximately 50%. The Smart Balance Battery Circuit helps maximize efficiency.
• Firmware Updates: Regularly check the RadioMaster website for firmware updates. Updates can be performed via USB or EdgeTX Companion PC software.
• Cooling System: The powerful cooling system with low-noise, high-output fans and an aluminum heat sink is designed for efficient heat dissipation. Ensure vents are not obstructed.

7. Troubleshooting

Controller does not power on:

• Check battery installation and ensure batteries are charged.
• Verify battery polarity is correct.

No signal or poor link quality:

• Ensure antennas are properly unfolded and positioned.
• Verify the receiver is correctly bound to the controller.
• Check for obstructions or interference in the operating environment.
• Confirm the internal RF module settings are correct for your receiver.

Touchscreen unresponsive:

• Restart the controller.
• Ensure the screen is clean and free of debris.
• If a screen protector is installed, ensure it is applied correctly and not interfering with touch input.

Gimbal issues (stick drift, incorrect response):

• Recalibrate gimbals through the radio's settings menu.
• Check for physical obstructions or damage to the gimbals.
• Adjust gimbal tension if sticks feel too loose or too stiff.

8. Specifications

9. Warranty and Support

For warranty information, please refer to the official RadioMaster website or contact your point of purchase.

For technical support, firmware downloads, and additional resources, visit the official RadioMaster support page.

• Manufacturer: RadioMaster
• Online Resources: RadioMaster Official Website