I brought this flight controller as I wanted more reliable parachute deployment, and also an idea on the altitude for my water rockets. With no experience using circuit boards, I found it was relatively easy to set up and get going following the Youtube tutorials. I use the flight controller in apogee mode and it works great, even if somthing goes wrong during launch the parachute still deploys at apogee. I have had one crash from 100m(not due to the flight controller), and I was really impressed to find the controller was unaffected and still working. Reviewing to data from the flights is also really interesting and a great feature, being csv format for use Microsoft excel makes this a simple task. Thanks Daniel, we have had hours of with your product and it has taken our water rockets to new heights.