ToothFairy 3.5" + Thumb Pro V2

By elzaepp on Sep 20, 2023

3  163  0
  • The ToothFairy 2 3.5" is designed for an AIO FC/ESC and CADDX Vista, but it is possible to use a regular 20x20mm stack and Walksnail
  • The "slammed deck " (15mm) design improves flight performance, but limits available space for components, I had to tinker new mounts for antenna, cap and beeber
  • About 290 grams AUW with a CNHL Ministar 4s 650mah (I don't care about sub250 anymore, because regulations changed in Germany recently)
  • The flight time is about 3-4 minutes with a CNHL Ministar 4s 650mah
  • T-Motor P1604 (3800kv) - a dream of a brushless motor for a 3.5 inch prop!
  • Props: GemFan 3520 is the way to go here!
  • Betaflight 4.4 + Chris Rossers AOS 3.5 PID/Filter Preset + bi-directional dshot + D min/max and Feed Forward disabled
  • No props in view, no visible jello with the GemFan 3520
  • I switched to Walksnail Avatar, had some trouble with frame-drops/freezes, but solved it with a bigger cap (1.000µF, 35V) and disabling VTX onboard-recording
  • In the 3.5" category, I wouldn't recommend the ToothFairy 2 for a daily flyer, the AOS 3.5 is easier to source and more comfortable to build and maintain
  • The RunCam Thumb Pro V2 is an acceptable solution for HD-ish footage in a small, lightweight and affordable package
  • GyroFlow produces, with a bit of tinkering, halfway good results with 4K@30fps_xview (widest, possible FOV), other resolutions caused too much zooming

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