When flying the CX-20 GPS quadcopter, its important to know the difference between altitude and elevation. You can buy the CX-20 Auto Pathfinder here (Open Source version) and spare parts, batteries, motors, propellers, etc. here \r
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Affiliate links: At no cost to you, I do receive a small commission for sales resulting from these links.\r
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MUSIC LICENSE\r
Awel by stefsax\r
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is licensed under a Creative Commons license:\r
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music was shortened to fit length of video.