Providing the user / pilot a good feedback is very important.. Right now most autopilots just have 1-3 LEDs, but no interaction concept. We would like to collect some feedback on this topic. It takes less than 60 seconds to complete and will help us a lot: Link to survey
Based on this feedback and general UI concepts we're trying to come up with a consistent interaction concept using the different LEDs, switches and buzzers to make the operation of the PX4 hardware as user friendly and safe as possible.