Lumenier QAV250-RTF-CF Mini FPV Quadcopter RTF, Carbon Fiber Edition
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- This RTF version is fully built, test flown and comes with everything to get you going. Just add your own receiver and setup your radio and you're good to go. Everything is mounted on a strong 2.5D CNC-ed Carbon Fiber unibody main frame board
- Integrated power distribution board for ESCs and FPV flight electronics with easy Lipo access. The suggested Lipo is a Lumenier 1300mAh 3s 60c
- 2 integrated LED strips (white and red) to aid LOS orientation
- Support for 32mm board cams as well as cams in cases with mounting bracket, as well as support for an HD camera (such as the Mobius)
- Integrated and included Landing Gear reminiscent of the QAV500 CF Landing Gear
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The ready to fly (RTF) Lumenier QAV250 Mini FPV Quadcopter - Carbon Fiber Edition airframe is a small yet fully functional FPV quad deserving the QAV label. The QAV250 is a symmetric 250mm size airframe that accommodates 5" props. The 250mm is measured motor shaft to motor shaft diagonally. The airframe is designed to support 3s lipos such as the Lumenier 1300mah 3s with XT-60 connector.
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First, there were no instructions included with the product and no part list. It was certainly not "RTF" ready to fly. The props were not mounted. No problemI can mount them, but being a novice I didn't realize that there were different props for the CW and CCW motors (I didn't even realize there were CW and CCW motors). The CCW motors had prop mounts with CW threads, so when the props spin the spinners will eventually fall off.
Fortunately, I was able to find the OpenPilot web site to help configure the CC3D flight controller and learn more about the copter. However, even after configuring it twice, the QAV250 behaved strangely. At that point, I discovered the CW/CCW issue with the props. Corrected, still no joy. The QAV250 would oscillate wildly. Obviously the stabilization algorithm was getting something wrong. Reconfigured again with no change. Looking at the telemetry while connected to the computer with GCS running I found out that pitch and roll axes were swapped. Duh!!! Whoever built the QAV250 mounted the CC3D incorrectly with it 90 degrees off axis, so the pitch and roll axes were swapped. This is what was confusing the flight controller stabilization algorithm. I had to partially disassemble the QAV250 to reach the CC3D board and mount it correctly. Not surprisingly (now), the mounting screws were loose because the assembler didn't use any thread lock.
Total waste of my time (about a week) to get it RTF. Sorry I paid extra for that "convenience"