The "Double or dual GPS version" of the X21 includes a GPS inside its transmitter to provide follow me and circle me capability to the X21. Find it here and use $10 coupon HTY10BYX21
- Before purchasing make sure that your phone is capable of using 5G WiFi. Uses WDPilot app available on Play here and iTunes here .
Pros
- 1080p HD camera records video directly to a microSD card in the camera.
- Uses 5G WiFi for transmission of digital video to your smartphone. This works much better than 2.4Ghz systems in that there is no interference from the quadcopters controller on 5.8Ghz frequency. This allows for 720p HD digital video transmission to your phone, along with greater FPV range (out to about 200 meters). I was really impressed with the FPV video that I was receiving. Uses WDPilot app available on Play here and iTunes here .
- "Dual GPS version" shown in this video includes a GPS system inside the controller to provide follow and circle me capability. Single GPS version does not have this capability.
- Conducts return to home on command, or automatically if flown out of range of the controller, or when battery level is low.
Cons
- Uses 802.11ac 5G WiFi. As of this date (8/2017) this type of WiFi is still only found on newer phones. This FPV system will NOT work with 2.4Ghz WiFi phones. Before purchasing, first verify that your device is truly 5G WiFi capable.
- Wide angled lens brings the quadcopter's landing gear into view.
- Maximum contol range seems to be a little over 200 meters, with the quadcopter conducting several uncommanded return to homes when I tried to exceed this range.
- Low voltage return to home occurs at somewhat higher voltage (10.8V) than what I would prefer. This is likely to prevent newer fliers from straying too far, and thus not having enough voltage to return home. However, it created some annoying RTH events at close range near the end of my flight.
- Does not include a camera gimbal. Thus its video is somewhat unsteady, especially if there is any wind.
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This video along with every video of the Quadcopter 101 channel was produced and edited with VSDC Free Video Editor. You may download this excellent, and no kidding "free" video editor here
MUSIC LICENSE
"Awel" by stefsax
is licensed under a Creative Commons license:
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music was shortened to fit length of video.