Appendix 1: WLToys V303 Supplemental Information v18
1 June-10-2015
I am brand new to flying this type of craft, and have only been flying smaller quads and simulators for about 4 months
now. The following information is what I’ve learned from the fantastic and ever-helpful hobbyists on the RCGroups
thread “The WLToys V303 (350 sized) "Seeker" quadcopter review”.
I know there will be more hobbyists joining the ranks, and some with less experience than me, so I’m hoping this will
help in their pursuit of successfully flying the V303 Seeker.
I am a hobbyist and have no association with WLToys, thus this is not an official/sanctioned WLToys document. Various brands and websites are
referenced in this document, of which I have no association as either a representative or as a shareholder. I am merely a customer and offer these
brands & vendors as examples only.
Table of Contents
Additional Resource Materials ................................................................................................................................................ 3
Functional Check Out and Configuration ................................................................................................................................ 3
Firmware ................................................................................................................................................................................. 5
LED Status ............................................................................................................................................................................... 5
Semi-documented TX Features/Functions .............................................................................................................................. 6
Transmitter ......................................................................................................................................................................... 6
Belly Connectors ................................................................................................................................................................. 6
Belly Wires (New Version) .................................................................................................................................................. 7
Loading PC Software for FC (PC-GCSoftware) ..................................................................................................................... 7
Problem Resolution ................................................................................................................................................................. 7
Battery Charger (Numerous symptoms/errors) .............................................................................................................. 8
Dead Battery or Battery unable to take a full charge ..................................................................................................... 8
I can’t find a 2700 mAh battery to replace my stock battery or to have multiple batteries .......................................... 8
Transmitter (TX) won’t power up, even though the batteries are brand new ............................................................... 8
Quad won’t power up .. no lights and no sounds .. when the battery is first attached. ................................................ 8
When inserting LiPo and powering up Beeps are heard but there is no LED indicator showing Red/Green ................. 9
Initialization went great can’t get GPS lock .................................................................................................................... 9
It initialized and I got GPS lock but I can’t arm the motors. ........................................................................................... 9
WARNING
1. Do not update Flight Controller with firmware from Zero Tech. WLToys
has a modified version and if updated you will not be able to fly without updating to the WLToys
version of the Flight Controller Firmware which is now available. (remediation)
2. Do not attach V303 battery when quad is upside down. The quad must be
upright so that FC initialization/calibration does not cause stability issues. (remediation)
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