3DR Iris Plus Troubleshooting
Learn about common issues and solutions for the 3DR Iris+ Quadcopter.
Why is the motor not spinning?
Battery Isn’t Charged
- Ensure that the drone is fully charged.
- Verify the battery connector is fully seated and if the drone powers on. If the drone is still not turning on, reference the “Why is the drone not turning on?” section.
- If all motors are spinning except for one, the motor that isn’t spinning might be broken and will need to be replaced. See our motor replacement guide HERE.
- Verify that nothing is blocking the motion of the motor (or propeller) from spinning freely.
- If all the motors are spinning except one, and visual inspection reveals damage to that motor’s wire harness, the motor will need to be replaced. See our motor replacement guide HERE.
Faulty Power Distribution Panel (Requires Soldering)
- If the drone is powered and attempted flying commands have no response (no motor movement) there are two possible issues:
- There might be a communication problem between the controller and the drone.
- The power distribution panel (distributes power from the battery) inside the drone is malfunctioning and will need to be replaced. See our PDP board replacement guide HERE.
Why is the drone not turning on?
Depleted or Defective Battery
- If the device is new, the battery might be slightly charged or near empty.
- If the device isn’t new, the battery might have drained over time after long periods of non-use.
- Check the battery to see its charge level, and if it’s low, simply charge it. If the drone still isn’t powering on, the battery is most likely damaged and will require replacement.
Faulty Connection to the Controller
- A faulty connection to the controller can be caused by a defective battery.
- Test the controller by removing the battery then returning it and attempting to turn on the controller. If this doesn’t work, place the battery in other devices to ensure that it functions. If the battery works in another device, but not the controller, the controller will likely need replacement.
Damage to Internal Components
- The internal components might be damaged from being crushed during packaging, getting wet, or being dropped too often.
- Once you’ve identified what’s damaged, follow the replacement guide specific to that component.
Why won’t my camera connect to the drone?
- Issues with camera connection can be caused by a faulty camera.
- Test the camera by connecting it to another device.
- For a GoPro, you can test it by connecting the camera to your phone. If the camera is unable to connect, the camera itself might have an issue.
Damaged Connection Cable
- Another reason for connection issues with the camera is a faulty cable.
- To replace the cable, refer to the replacement guide HERE.
Why is the gimbal not working?
Faulty Connection Cable
- If either one or both gimbal axis aren’t moving, a faulty connection might be the cause. A cable connects the gimbal control board to the gimbal motors, ensure that the cables are securely plugged in on both ends. If the connectors feel loose in their slots or the cable sheathing is visibly damaged, you might need to replace the cable.
- Two motors control the gimbal’s movement. Feel the gimbal motors, if one is damaged it may feel very hot.
- If only one axis of the gimbal moves, then it is likely that the stationary motor is damaged. Replace the motor with this guide HERE.
Faulty Gimbal Board
- If neither gimbal axis functions, and don’t feel hot, nor have damaged cables, the gimbal board might be damaged.
- A control board is wired to the gimbal motors and is located above the gimbal motors but under the drone. If the gimbal isn’t working, but the motors aren’t damaged, the gimbal board might need to be replaced.
Why is the drone not moving?
Sensor Calibration Error
- If a flashing yellow status LED is visible, it’s likely the sensors didn’t calibrate properly upon startup. Follow these steps for proper calibration:
- Connect the battery to the quadcopter.
- Wait at least 10 seconds before moving the drone (Even closing the battery door can misalign the sensors.
- Wait until the status lights show blue and red before moving.
- There are two measurements required to pass the GPS Pre-Arm check: GPS Lock (Signal Strength) and Horizontal Dilution of Precision (HDOP, signal accuracy).
- GPS Lock denotes the number of satellites connected to the drone at one point.
- The IRIS Plus prefers 5 satellites at once, however, it’s possible to fly with less with the risk of possibly disconnecting during flight.
- You can see the lock status and satellite count on the controller’s data display. To do so, press and hold the controller’s DN button.
- HDOP must be below a certain level to pass a pre-flight check.
- High HDOP levels can result from satellite positioning, buildings and mountains, atmospheric effects, electromagnetic interference, or the time of day.
- This can occur even if the drone has a strong GPS lock.
- To improve signal strength, operate the drone in an open space with a clear view of the sky and wait for the drone to acquire either a strong GPS lock or lower HDOP. Moving from location to location can increase the amount of time acquisition takes.
Motors not Arming
- The double-flashing yellow status light means the drone is failing a pre-arming safety check, causing the motors to remain inoperative.
- To see a specific error code, connect the drone to a ground station to view the flight data display. (Groundstation: Any computer with Mission Planner installed).
RC Calibration Error
- If the pre-arm check signals an RC Calibration error, use Mission Planner to calibrate the remote.
- If you don’t see any response in the calibration screen from moving the controller sticks, ensure that both the controller and copter are powered and the copter is connected to Mission Planner.
- Remove the top shell before performing this process.
- Ensure both the controller and the quadcopter are powered. Check the RC Receiver and if there is no green light follow these steps to rebind the receiver to the transmitter.
- Disconnect the battery and turn off the controller. Make sure that both on/off switches on the controller are set to the off position.
- Hold the F/S button on the back of the controller, and power on the controller while holding the F/S button down.
- Hold the F/S button on the receiver down, and connect the battery to the drone while holding the button down.
- Now when powering the controller and receiver, the green status LED on the receiver should be visible, if so replace the top shell and reattempt arming.
Battery isn’t Plugged in
- If the drone isn’t showing any lights it might be a battery issue. Ensure the battery is charged and the connector is completely fastened into the drone’s connector.
- Please see the “Why is the drone not turning on?” section for may ways to diagnose this issue.