We are trying to run a simple takeoff command using drone-kit. We have a lidar and an optical flow (PX4 flow) camera connected. We have disabled GPS and have successfully achieved loiter mode with no gps. We are running APM 3.4.6. The craft successfully arms and is in guided mode. However, the craft never spins the motors faster than the arming spin speed and never takes off. The simple_takeoff command runs but doesn't seem to do anything. Would we need to raise the throttle through the code to have the motors respond? Here is another forum post that has a similar issue... however they are using the beta firmware and we like to stick with the latest stable release.
Here are our Python package versions:
Any help would be greatly appreciated!