1. Introduction
This manual provides detailed instructions for the proper setup, operation, and maintenance of your DasMikro Micro 4CH Surface Receiver. This ultra-lightweight and micro-sized receiver is designed for use with Futaba T-FHSS compatible transmitters, making it an ideal choice for micro racing cars and other small-scale RC applications.

2. Features
- Futaba 2.4GHz T-FHSS compatible.
- High-performance CPU for enhanced precision control.
- 4-channel support.
- Micro size: 19mm x 12mm.
- Ideal for any micro RC racing chassis.
- Integrated failsafe function.
- Operating Voltage: 3.7V - 8.4V.
- Weight: 2g.
3. Package Contents
Ensure all items are present and in good condition upon opening the package:
- 1 x DasMikro Micro 4CH Surface Receiver
- 2 x 1.5mm 3P JST plug with cable
4. Specifications
| Parameter | Value |
|---|---|
| Compatibility | Futaba 2.4GHz T-FHSS Transmitters (e.g., 7PX, 4PX, 4PV, 3PV) |
| Channels | 4 Channels |
| Dimensions (L x W) | 19mm x 12mm |
| Weight | 2g |
| Operating Voltage | 3.7V - 8.4V |
| Failsafe Function | Yes |
| Material | Composite Material |
| Recommended Age | 14+ years |

5. Setup: Binding and Failsafe
Follow these steps to bind your DasMikro Micro 4CH Surface Receiver to your Futaba T-FHSS compatible transmitter and set up the failsafe function:
- Power On: Ensure both your Futaba T-FHSS transmitter and the DasMikro receiver are powered on.
- Set Failsafe Positions: On your transmitter, adjust each control channel (steering, throttle, etc.) to the exact position you wish them to hold in case of signal loss (failsafe mode). For example, set the throttle to neutral or brake, and steering to straight.
- Enter Pair Mode: Set your Futaba T-FHSS transmitter to its pairing mode. Refer to your transmitter's manual for specific instructions on how to do this.
- Receiver LED Check: The receiver's LED should be illuminated, indicating it is powered on and ready for binding.
- Initiate Binding: Locate the "Bind" button on the receiver (as shown in Figure 2). Press and hold this button for approximately 2 seconds.
- Binding Confirmation: The receiver's LED will first flash rapidly, then turn solid ON again. This indicates that the binding process is complete and the failsafe data (the control positions you set in step 2) has been successfully saved.
- Test Connection: Power off both the transmitter and the receiver. Then, power them on again. The receiver should now be successfully linked to your transmitter and respond to your commands.
Note: Always test your failsafe settings in a safe environment before operating your RC vehicle.
6. Operating Instructions
Once the receiver is successfully bound to your transmitter, you can begin operating your RC vehicle. Ensure all connections are secure before use.
- Power On Sequence: Always turn on your transmitter first, then power on your RC vehicle (receiver).
- Power Off Sequence: Always power off your RC vehicle (receiver) first, then turn off your transmitter.
- Range Check: Before each use, perform a range check to ensure reliable signal reception, especially in new operating environments.
- Channel Assignment: Connect your servos and ESC (Electronic Speed Controller) to the corresponding channels on the receiver (CH1, CH2, CH3, CH4) as per your RC vehicle's requirements. Typically, CH1 is steering, CH2 is throttle.
7. Maintenance
To ensure the longevity and optimal performance of your DasMikro receiver, follow these maintenance guidelines:
- Keep Clean: Regularly clean the receiver to prevent dust and debris buildup, which can affect performance. Use a soft, dry brush or compressed air.
- 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.
- Secure Mounting: Mount the receiver securely within your RC vehicle to prevent vibrations and impacts from damaging internal components.
- Antenna Placement: Ensure the antenna is positioned correctly and not obstructed by carbon fiber or metal parts, which can reduce range.
- Inspect Connections: Periodically check all wire connections to the receiver for looseness or damage.
8. Troubleshooting
If you encounter issues with your receiver, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Receiver not binding | Incorrect binding procedure, transmitter not in pair mode, receiver too far from transmitter. | Review the "Binding and Failsafe" section (Section 5) and repeat the steps carefully. Ensure transmitter is in pair mode and receiver is close. |
| No response from controls | Not bound, incorrect channel connections, low battery on transmitter or vehicle. | Verify binding. Check all servo/ESC connections to the correct channels. Ensure batteries are fully charged. |
| Limited range or signal loss | Antenna obstruction or damage, interference, low battery. | Ensure antenna is clear and undamaged. Avoid operating near strong electrical interference sources. Check battery levels. |
| Failsafe not working | Failsafe not set correctly during binding. | Re-bind the receiver, ensuring failsafe positions are set on the transmitter before initiating the bind process. |
9. User Tips
- Due to its micro size, handle the receiver with care to avoid damaging the delicate components.
- When installing in a micro racing chassis, use double-sided foam tape to absorb vibrations and protect the receiver.
- Always ensure the antenna wire is extended as much as possible and not coiled or tucked away, to maximize signal range.
10. Warranty and Support
This product is designed for hobby use. For technical support or warranty inquiries, please contact your retailer or the manufacturer directly. Keep your proof of purchase for any warranty claims.