I recently replaced my Pixhawk 2.4.8 with the same model and updated the firmware to ArduCopter V4.5.7. While my telemetry system (3DR M10135A, 3DR Radio V2.1 915MHz) worked fine with the previous setup, I’ve encountered issues after the replacement.
Current Status:
- SiK Firmware: Updated both local and remote radios from 3DR 1060 to HB 1060 using the uploader script.
- LED Behavior:
- Local Transceiver: Solid red LED after boot.
- Remote Transceiver: Flashes green before connecting, then switches to solid red.
- Connection: I can connect to the Pixhawk via MAVLink, download and change parameters, and telemetry appears to work fine with no dropped packets or communication errors.
- Performance Metrics: RSSI levels are consistent, and the connection is stable.
Issues:
- When attempting to reset either transceiver via ATZ in RFD900 Tools or Mission Planner, the command fails with an error.
- LED behavior does not match the expected indications for proper operation (e.g., solid green for a successful connection).
- I attempted to reset the radios to default firmware by shorting GND and CTS but observed no change in behavior.
- Despite the radios “working,” these anomalies could indicate a deeper problem.
Additional Details:
- Flight Controller: Pixhawk 2.4.8
- Firmware Version: ArduCopter V4.5.7
- Observations:
- All telemetry packets are successfully transmitted and received with no apparent data loss.
- Parameters download and update successfully.
- Communication stability is not compromised, but the LED indications and inability to reset raise concerns about long-term reliability.