TheMann58
Second Officer
Flight distance : 18669501 ft
United States
Offline
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In the field now testing my Phantom 4 after updating firmware to 2.00.0106, performing cold IMU calibration at home on level granite counter, then performing gimbal calibration, and RC stick calibration. Today at site, Inperformed a compass calibration.
Testing going very well so far with one exception. Getting very stable hover and flight performance - no signs of intermittent "bucking" behavior reported by a few others in this forum post. I strongly advise that anyone having flight stability issues perform an IMU calibration as the IMU calibration procedure is now the same as for the P4Pro, where you tilt the aircraft on its legs 45 degrees left, right, forward, backward and, finally, completely upside-down resting on the prop motors. Ask yourself - If you don't do an IMU calibration, what default calibration values are stored for all these aircraft positions???
Gimbal horizon testing - getting absolutely level forward, left, right, while yawing, in both PGPS and Sport modes at full stick. OUTSTANDING! Get slight tilt of maybe 2 degrees during full-stick reverse flight with wind from the left.
Live video stability - generally VERY good to excellent. After first full-battery flight, started getting live video instability even at 5 feet distance and then message about mobile device CPU being overloaded. I had never seen that before with my Apple iPad Air 2. So, I decided on this hot 96F sunny day that my iPad might be overheating. I was already using a sun hood. I then decided to turn OFF simultaneous video output to HDMI (I have the HDMI module installed, but was not currently needing this output). It may have been pure coincidence, BUT this restored stable, glitch-free live video performance over next full-battery long distance flight.
Range and live video stability at distance - I used CUSTOM channel 20, 4 mbps transmission on outbound leg of a long-distance flight until 10,000 feet distance when HD signal suddenly went from 5 bars to zero and RTH initiated. When I regained connection at 9900 feet distance, I switched to AUTO mode, turned around and slowly flew back through weak signal area which lasted to 11,000 feet. Then I had 5 bars RC and HD signal strength out to 17,500 feet distance when I turned around with 50% battery and flew entire return leg with no live video issues. NOTE: I always use an slip-on aluminum parabolic reflector behind my upright antenna during long-distance flights.
One disappointment - Precision Landing is NOT working. I have enabled, disable d and enable this festure, tried turning ALL Advanced Seetings for VPS on an off anf turning obstacle avoidance and Smart RTH on and off sveral times to see idf this would activate this feature, but I could not get Precision Landing to work. When you tap on Auto Take-off, you should get a message and a box to check about Record Precise Takeoff Point, which is what happens on my P4 Pro, but on the P4, I do not get this option box, and the P4 rises only to 4 feet (instead of 19-20 feet) after Uto take-off and when landing the P4 I never get the Precision Landing message and RTH accuracy is onlystandard GPS accuracy of 6 feet from Home Point.
Has anyone using an iPad Gotten Precision Landing to work since this firmware upgrade?
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