FLYSKY FS-SR12 2.4G 12-Channel Receiver Instruction Manual

1. Introduction

The FLYSKY FS-SR12 is a high-performance 2.4GHz 12-channel receiver designed for a wide range of remote control models. It features dual antennas for stable signal reception and supports multiple signal output protocols including PWM, PPM, i-BUS, and S.BUS. Its compact design ensures easy integration into various applications, making it a versatile choice for hobbyists and professionals alike.

2. Features

• Supports 12 PWM channel signal outputs with ANT protocol, providing extensive control options.
• Equipped with two antennas, ensuring stable and strong signal reception over long distances.
• Supports PWM/PPM/i-BUS/S.BUS signal output, offering broad compatibility with various devices and flight controllers.
• Ideal for a diverse range of models including fixed-wing aircraft, helicopters, gliders, delta-wing airplanes, multicopters, construction vehicles, boats, robots, and cars.
• Compact design allows for easy installation and integration into models with limited space.

3. Specifications

4. Setup

4.1 Component Identification

Refer to the diagram below for identification of ports and indicators on your FS-SR12 receiver.

• LED: Status indicator.
• SERVO: Servo output ports (1-12).
• SENS: Sensor port.
• BVD/VCC: Battery Voltage Detection / Power Input.
• BIND: Bind button.
• PPM/1: PPM output / Channel 1 PWM output.

4.2 Connections

1. Power Connection: Connect a power source (3.5-9V DC) to the BVD/VCC port. Ensure correct polarity.
2. Servo/ESC Connections: Connect your servos and Electronic Speed Controllers (ESCs) to the corresponding PWM channels (1-12) on the receiver. Channel 1 can also function as a PPM output.
3. Antenna Placement: The receiver is equipped with two antennas. For optimal signal reception, ensure the antennas are positioned at a 90-degree angle to each other and away from carbon fiber or metal parts of your model. Avoid bending or cutting the antenna wires.

4.3 Binding Procedure

To establish communication between your FS-SR12 receiver and a compatible FLYSKY transmitter (e.g., FS-ST8 with ANT protocol), follow these steps:

1. Ensure your transmitter is powered off.
2. Connect power to the FS-SR12 receiver (3.5-9V DC). The LED on the receiver should start flashing rapidly, indicating it is in binding mode.
3. If the LED is not flashing, press and hold the 'BIND' button on the receiver while powering it on.
4. Power on your transmitter and put it into binding mode (refer to your transmitter's manual for specific instructions).
5. Once the binding process is successful, the LED on the receiver will turn solid, indicating a stable connection.
6. Turn off both the receiver and transmitter, then power them on normally to confirm the binding.

5. Operation

Once successfully bound to your transmitter, the FS-SR12 receiver will receive control signals and output them to your connected servos, ESCs, or flight controller via PWM, PPM, i-BUS, or S.BUS protocols.

• PWM Output: Each of the 12 channels provides a direct PWM signal for individual servo or ESC control.
• PPM Output: Channel 1 can be configured to output a single PPM stream containing all channel data, suitable for flight controllers that accept PPM input.
• i-BUS/S.BUS Output: The receiver supports i-BUS and S.BUS serial data output, which can transmit multiple channels over a single wire, ideal for advanced flight controllers.

The dual antenna design ensures robust signal reception, minimizing the risk of signal loss during operation. Always perform a range check before flying or operating your model to ensure a safe and reliable connection.

6. Maintenance

• Keep Clean: Regularly inspect the receiver for dirt, dust, or debris. Use a soft, dry brush or compressed air to clean it.
• Avoid Moisture: Protect the receiver from water and excessive humidity. If it gets wet, disconnect power immediately and allow it to dry completely before reuse.
• Check Connections: Periodically check all wire connections to ensure they are secure and free from damage.
• Firmware Updates: The FS-SR12 supports online updates. Check the FLYSKY official website for the latest firmware versions and update instructions to ensure optimal performance and compatibility.
• Physical Inspection: Inspect the receiver casing and antennas for any signs of physical damage. Replace if necessary.

7. Troubleshooting

• Receiver LED not solid after binding:
  • Ensure your transmitter is compatible with the ANT protocol.
  • Verify the binding procedure was followed correctly.
  • Check if the transmitter is too close or too far from the receiver during binding.
  • Ensure no other 2.4GHz devices are causing interference during binding.
• Loss of signal during operation:
  • Check antenna placement and ensure they are not obstructed by carbon fiber or metal.
  • Perform a range check to confirm the operational distance.
  • Ensure the receiver's power supply is stable and within the specified voltage range (3.5-9V DC).
  • Avoid operating in areas with high 2.4GHz interference.
• No response from servos/ESCs:
  • Verify that the receiver is successfully bound to the transmitter (solid LED).
  • Check all connections between the receiver and servos/ESCs for correct polarity and secure fit.
  • Ensure the servos/ESCs are powered correctly.
  • Confirm the transmitter's channel assignments match the receiver's outputs.
• Receiver not powering on:
  • Check the power source and its connection to the BVD/VCC port.
  • Ensure the input voltage is within the 3.5-9V DC range.
  • Inspect the power wires for any damage.

8. User Tips

While no specific user tips were available from provided data, here are some general recommendations for optimizing your experience with the FS-SR12 receiver:

• Antenna Management: Proper antenna placement is crucial for signal reliability. Experiment with different orientations (e.g., V-shape) to find the best reception for your specific model and environment.
• Power Supply: Always use a stable and adequately rated power supply for your receiver and connected components to prevent brownouts or signal loss.
• Range Testing: Before every flight or operation, perform a thorough range test to ensure the receiver maintains a strong connection at a safe distance.
• Cable Management: Secure all wiring to prevent them from interfering with moving parts or causing shorts.

9. Warranty & Support

For warranty information, technical support, or service inquiries, please contact the seller or the manufacturer directly. Keep your proof of purchase for any warranty claims.