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Lefei SN-FAST Flight Controller Support OSD Y3 Vertical Take-off And Landing VTOL Flight For FPV RC Airplane Fixed Wing 86% OFF Lefei SN-FAST Flight Controller Support OSD Y3 Vertical Take-off And Landing VTOL Flight For FPV RC Airplane Fixed Wing US$2.65 US$19.00 View It
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Top Positive Review for %s on Banggood, Shop best %s with lowest price on Banggood. Browse most helpful positive review for %s before you buy., rc toys, fun sports, fashion, popular electronics
Krazyman 21/10/2022
This is my second one of these flight controllers. After contacting lefeirc about the problems I was having updating the firmware and not being able to ARM the motors in VTOL mode, they were very helpful. The Manual needs to be changed to show how to ARM the motors as well as a little more detailed instructions for updating the firmware. The motors are ARMED in VTOL mode by moving both sticks down and out and keeping them there until the motors spin up for a split second. You then move the throttle up past 1/2 and the motors will run. The problem is that when you move the throttle down to 1/2 throttle the motors will shut off and not at the same time. I have asked them to update the firmware so that the throttle has full range and not just the upper half of the range. When updating the firmware you need to follow these steps; Do not have the FC powered up with the flight battery. Down load the SN_FAST_V57 from the lefeirc website. Plug in the USB to your computer. You should see a drive show up, on my computer it was Drive E. Copy the update file to the drive that showed up. Be sure that the name of the file only says SN_FAST and not SN_FAST_V57, otherwise the FC will not recognize the file. Unplug the USB cable and then plug in the flight battery. The FC will update and delete the file from the Drive and then go into its normal start up sequence. If you unplug the battery and plug the USB back in you will see that the Drive has no file in it. I have had a thread started in RC Groups for this FC, so go there if you have questions, or need more information. https://www.rcgroups.com/forums/showthread.php?4226367-Lefei-SN-FAST-Flight-Controller-Support-OSD-Y3-Vertical-Take-off-And-Landing
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