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Mini Indoor FPV Drone

by LindsayFowler, published

Mini Indoor FPV Drone by LindsayFowler Dec 9, 2017
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Summary

NOT WORKING YET . Looking for testers.

PROPELLERS DO NOT PROVIDE ADEQUATE LIFT :(
ALSO VERY DIFFICULT TO PRINT BALANCED PROPELLERS :( Any advice from people who have been successful?

Maybe the solution is to BUY PROPELLERS INSTEAD OF PRINTING but this will require a REDESIGN OF BODY unfortunately. OR LIGHTER BATTERY??

Weight Budget
2S lipo weighing 31g + air frame 26g + 4 engines 22g, + camera tx 5g + receiver 2g + flight controller 3g I'm not sure. Initial testing looking good. May experiment with more blades 5 or 6.

Total Thrust required is 89g for hovering. It is desirable to have around double that. 45g of thrust per motor if possible. These motors provide 40g each, but they are expensive: https://micro-motor-warehouse.com/products/cl-0820-17

Disclaimer
Components change size and shape, printers print different sizes, ABS shrinks - none of this is my fault.. Treat this as a starting point - you will have to file and chop. Basically folks, it's buyer beware and you're not buying - it's a free design - so please don't come complaining to me if doesn't work for you.. design your own.

Weight:
Body: 26 grams when printed in ABS.
Drone with everything on it: 98 grams.

Features:
Light weight, strong body. Ducts which hopefully provide better efficiency.
Full protection of propellers in crashes. Protection of antenna in crashes.

Recommended Shopping List:

Camera and Video Transmitter
https://www.banggood.com/de/Eachine-TX03-Super-Mini-025mW50mW200mW-Switchable-AIO-5_8G-72CH-VTX-600TVL-13-Cmos-FPV-Camera-p-1104884.html?utm_source=google&utm_medium=cpc_ods&utm_content=hsj&utm_campaign=DE-Sfpv-Cam-Eac-TX03&gclid=Cj0KCQiAsK7RBRDzARIsAM2pTZ9JI7Ym37E14yUmZudP0gThNT4cZh5uhUwvkqjFP9BPq-956dcigvUaAtGgEALw_wcB&cur_warehouse=CN

Receiver - A8S-2 tiny SBUS
https://hobbyking.com/en_us/fs-a8s-2-4g-8ch-mini-receiver-with-ppm-i-bus-sbus-output.html

Battery size 25mm wide x 15mm high x 40 to 45mm
https://www.banggood.com/XF-Power-7_4V-600mAh-2S-30C-Lipo-Battery-JST-Plug-p-1089203.html?gmcCountry=AU¤cy=AUD&createTmp=1&utm_source=googleshopping&utm_medium=cpc_ods&utm_content=heath&utm_campaign=pla-heli-au-pc&gclid=Cj0KCQiAsK7RBRDzARIsAM2pTZ-PH1yQrNQ3YZGYeOWd4HDn1ALTGuWMmLR_3b-k2JPoJU2NO9PcrmcaArl2EALw_wcB&cur_warehouse=CN

8.5mm Brushed Motors
https://www.fpvfaster.com.au/products/brushed-8520-2s-8-5x20mm-coreless-motor-for-2s-micro-drones-like-flyingfrog-q90?utm_medium=cpc&utm_source=googlepla&variant=34351395465&gclid=Cj0KCQiAsK7RBRDzARIsAM2pTZ-sBDoY4awEZIDfFjuFVwhP2faQGrplH7kcVkRCDh6AWR2T97K2L9gaAtPREALw_wcB
Flight Controller - brushed
https://www.banggood.com/Eachine-32bits-F3-Brushed-Flight-Control-Board-Based-On-SP-RACING-F3-EVO-For-Micro-FPV-Frame-p-1076530.html?utm_source=google&utm_medium=cpc_ods&utm_campaign=seachine-ds-pc-mr&utm_content=sophia&gclid=Cj0KCQiAsK7RBRDzARIsAM2pTZ9ksrSdifNi-BZtSmv5t3CNihh106CLpUlNm8YBBBYvThT33elJ-5QaAvK1EALw_wcB&cur_warehouse=CN

Other essential items to use with drone

FPV Goggles
https://www.banggood.com/de/Eachine-VR006-VR-006-3-Inch-500300-Display-5_8G-40CH-Mini-FPV-Goggles-Build-in-3_7V-500mAh-Battery-p-1158147.html?rmmds=search&cur_warehouse=CN

Transmitter (Controller) - any that is compatible with your receiver - I suggest:
https://hobbyking.com/en_us/turnigy-evolution-fpv-radio-mode-2-white.html

Change log:
Propellers V4
Reduced outer diameter for a total of 1.2mm clearance as 0.5 was not enough, given the twisted edges of the lofted blades add extra circumference.

V12-16
Slightly longer battery housing.
Reinforced with triangular mounts for camera tx housing.
V11
Shortened and strengthened motor wire guards. After testing dropping with battery installed these broke too easily.
V10
Provided mounting rail for EVO F3 flight controller.
Sturdier box for SBUS receiver.
V9
Gave an extra 2mm inside camera housing to facilitate installation of camera.
V8
Provided sturdier mounting clips for EVO F3 flight controller.
V7
Angled Camera housing
V6
Cut down rims of ducts to eliminate drag and weight.

If there are any aerospace people out there willing to give me some pointers, I'd really appreciate it.

Print Settings

Printer:

MP Mini Select

Rafts:

Doesn't Matter

Supports:

Yes

Resolution:

0.2mm layer height

Infill:

100%

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