Recent content by PeteM

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    I need to survey a small area without GCPs (and without RTK)

    I solved the problem by inserting some GCPs not measured directly in the field but known from previous maps (edges of tanks and other unique elements never moved). I was not able to insert the point with the precision of a colored marker on the ground but with a good approximation I scaled the...
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    I need to survey a small area without GCPs (and without RTK)

    Having already had a survey of the area, I was thinking of something like this. Maybe I can impose a distance between two distant points to scale the image correctly.
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    I need to survey a small area without GCPs (and without RTK)

    I have been involved in drone photogrammetry for many years and I know how to operate. The problem is that this time I can't physically measure GCPs on the ground. However, since I don't need a survey that is precise or georeferenced, I wanted to understand how to obtain an "acceptable" result...
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    I need to survey a small area without GCPs (and without RTK)

    As the title says. Unfortunately I only have a non-RTK P4 and this time I cannot access the ground to measure some GCPs with a total station (as I usually do). The survey must NOT be georeferenced and must NOT be precise. Furthermore, I already have a precise survey of the area and I just...
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    Phantom 4 and aeronautical VOR

    Does flying near an aviation VOR cause problems for the drone due to radio interference ?
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    P4RTK/PPK processing v GCPs

    https://skyward.io/parrot-anafi-ai/
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    P4RTK/PPK processing v GCPs

    In recent months, drones with extremely advanced optics are coming out on the market. In case of topographic surveys whose purpose is only to have a model to measure distances and calculate volumes (without the need for georeferencing) these drones can work without GCPs ?
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    P4: gimbal went crazy during the flight

    I've downloaded the file "DJIFlightRecord_2021-XX-XX_[XX-XX-XX]" from the tablet. The file is almost 3 Mb but is encrypted and no reader can convert it into something readable. How can I do ?
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    P4: gimbal went crazy during the flight

    If I analyze the .csv file with these two methods no error message or anomaly appear. I also decrypted the .dat file and I end up with an excel spreadsheet full of parameters and values. Can anyone help me figure out which column to check to understand if the gimbal had a problem or if there...
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    P4: gimbal went crazy during the flight

    Just downloaded (and opened) both the .dat file from the drone and the .csv file from the tablet. Where and what exactly should I look for in all those parameters and values ? On Youtube I also found this video. Very similar to what happened to me. But the gimbal remained "stucked" until the...
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    P4: gimbal went crazy during the flight

    Suddenly in the middle of a waypoint flight with Litchi, I noticed an initial "jolt" and a few seconds later the gimbal lost all control and began to tilt randomly following the force of the flight. On the tablet screen I noticed "Hardware Error". Upon landing, the gimbal was locked in an...
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    Litchi: 3 error messages before take off

    The 3 messages, including the one on the battery, continue to appear at the beginning of each flight (then disappear after a few seconds.) The warnings only appear if I use Litchi. If I use the official DJI GO app, no anomalies are reported. Even if I connect the drone to DJI Assistant, no...
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    Litchi: 3 error messages before take off

    C Ok. So what I have to do ? How to get and post the log ?
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    Litchi: 3 error messages before take off

    The errors remain. The temperature was like 15 degrees. The battery performed perfectly during flight and also the logs (from airdata) are perfect.
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    Litchi: 3 error messages before take off

    No. The message continues to appear with the drone perfectly stationary on an even surface and with fine GPS count. No. The message continues to appear while I wait for the IMU to initialize, without doing anything. No. Battery is firmly clicked. I have been flying for about 5 years and this...