How to Use T8S 2.4G Transmitter: Examples, Pinouts, and Specs

The T8S 2.4G Transmitter by RadioLink is a compact and versatile wireless transmitter designed for remote control applications. Operating in the 2.4 GHz frequency band, it ensures reliable and interference-resistant communication with compatible receivers. Its lightweight design and user-friendly interface make it ideal for controlling drones, RC cars, boats, and other remote-controlled devices.

• Remote control of drones and quadcopters
• RC cars, boats, and aircraft
• Robotics and automation systems
• Wireless communication for hobbyist projects
• Educational and prototyping purposes

The following table outlines the key technical details of the T8S 2.4G Transmitter:

The T8S 2.4G Transmitter does not have traditional pins like ICs or microcontrollers. Instead, it features the following key interfaces:

The T8S 2.4G Transmitter is a standalone device and does not require direct integration into a circuit. Instead, it communicates wirelessly with a compatible receiver. Follow these steps to use the transmitter:

1. Power On the Transmitter:

   • Ensure the internal battery is charged using the Micro-USB port.
   • Slide the power switch to the "ON" position.

2. Bind the Transmitter to a Receiver:

   • Power on the compatible receiver (e.g., RadioLink R8EF).
   • Press and hold the bind button on the receiver until the LED flashes.
   • Press and hold the bind button on the transmitter until the receiver's LED stops flashing, indicating a successful bind.

3. Configure the Control Modes:

   • Use the mode switches to select the desired control mode (e.g., Mode 1 or Mode 2).
   • Adjust the trim buttons for precise control of the connected device.

4. Test the Connection:

   • Move the control sticks to verify that the receiver responds correctly.
   • Ensure all channels are functioning as expected.

• Battery Maintenance: Always charge the internal battery before use to avoid interruptions during operation.
• Line of Sight: For optimal performance, maintain a clear line of sight between the transmitter and receiver.
• Interference: Avoid using the transmitter in areas with heavy 2.4 GHz interference (e.g., Wi-Fi networks).
• Firmware Updates: Periodically check for firmware updates from RadioLink to ensure compatibility and improved performance.

While the T8S 2.4G Transmitter does not directly interface with an Arduino, you can use a compatible receiver (e.g., R8EF) to receive signals and control an Arduino-based project. Below is an example of how to read PWM signals from the receiver:

// Example code to read PWM signals from a RadioLink receiver
// connected to an Arduino UNO

const int channelPin = 2; // Connect the receiver's signal pin to Arduino pin 2
volatile unsigned long pulseWidth = 0; // Variable to store pulse width
volatile unsigned long lastTime = 0;  // Variable to store the last interrupt time

void setup() {
  pinMode(channelPin, INPUT); // Set the channel pin as input
  attachInterrupt(digitalPinToInterrupt(channelPin), readPulse, CHANGE);
  Serial.begin(9600); // Initialize serial communication
}

void loop() {
  // Print the pulse width (in microseconds) to the Serial Monitor
  Serial.print("Pulse Width: ");
  Serial.print(pulseWidth);
  Serial.println(" us");
  delay(100); // Delay for readability
}

// Interrupt service routine to measure pulse width
void readPulse() {
  if (digitalRead(channelPin) == HIGH) {
    // Rising edge detected, record the current time
    lastTime = micros();
  } else {
    // Falling edge detected, calculate the pulse width
    pulseWidth = micros() - lastTime;
  }
}

1. The transmitter does not power on:

   • Ensure the internal battery is charged.
   • Check the power switch and ensure it is in the "ON" position.

2. The receiver does not bind with the transmitter:

   • Verify that the receiver is compatible with the T8S transmitter.
   • Ensure both devices are in bind mode simultaneously.
   • Reduce the distance between the transmitter and receiver during binding.

3. Intermittent signal loss:

   • Check for sources of interference in the 2.4 GHz band.
   • Ensure the transmitter and receiver antennas are not obstructed.

4. Control sticks are unresponsive:

   • Verify that the transmitter is properly bound to the receiver.
   • Check the trim settings and adjust as needed.

Q: Can I use the T8S transmitter with non-RadioLink receivers?
A: No, the T8S transmitter is designed to work exclusively with RadioLink receivers.

Q: How do I update the firmware?
A: Connect the transmitter to a computer using the Micro-USB port and follow the firmware update instructions provided by RadioLink.

Q: What is the maximum range of the T8S transmitter?
A: The transmitter has a maximum range of up to 400 meters in an open, line-of-sight environment.

Q: Can I use the T8S transmitter for FPV (First Person View) drones?
A: Yes, the T8S transmitter is suitable for FPV drones when paired with a compatible receiver and FPV system.

This concludes the documentation for the T8S 2.4G Transmitter. For further assistance, refer to the official RadioLink user manual or contact their support team.