3 inch Drone Frame

The top part can be 3D printed from TPU to dampen vibrations if the silicone mount is not used 

Parts List: 

Drone Essentials:

Flight controller: https://www.banggood.com/custlink/GmGZA3keo8

GPS (non-affiliate): https://www.banggood.com/de/HGLRC-M100-MINI-GPS-Module-M10-Chip-Built-in-Ceramic-Atenna-for-2-7-Inch-Freestyle-Long-Range-FPV-Racing-RC-Drone-p-1982120.html?cur_warehouse=CZ&rmmds=search&ID=6291970

Propellers (non-affiliate): https://n-factory.de/HQProp-Durable-T3X15-Propeller-Grey?srsltid=AfmBOordlUIZKRMVkA2CF8K73CbRhKRj5Lz6SBmNIeYxCaPLbe22wMNr

Silicone mount: https://www.fpv24.com/de/betafpv/betafpv-shock-absorber-stossdaempfer-dji-o4-air-unit

DJI O4 Air Unit: https://amzn.to/4jzcsT2

Motor: https://n-factory.de/BetaFPV-LAVA-1102-14000KV-Brushless-Motor

Alternative motor with longer cables: https://de.aliexpress.com/item/1005004344621352.html?src=google&pdp_npi=4%40dis!EUR!13.88!12.89!!!!!%40!12000028844354681!ppc!!!&src=google&albch=shopping&acnt=272-267-0231&isdl=y&slnk=&plac=&mtctp=&albbt=Google_7_shopping&aff_platform=google&aff_short_key=UneMJZVf&gclsrc=aw.ds&&albagn=888888&&ds_e_adid=726717691648&ds_e_matchtype=search&ds_e_device=c&ds_e_network=g&ds_e_product_group_id=297546631617&ds_e_product_id=de1005004344621352&ds_e_product_merchant_id=109139798&ds_e_product_country=DE&ds_e_product_language=de&ds_e_product_channel=online&ds_e_product_store_id=&ds_url_v=2&albcp=22054759359&albag=172828878419&isSmbAutoCall=false&needSmbHouyi=false&gad_source=1&gad_campaignid=22054759359&gbraid=0AAAAAoukdWNkV8DeGy-9JcpzMEG_2R15D&gclid=Cj0KCQjwuvrBBhDcARIsAKRrkjeTGqmigN0vv2_lsqtbu2Mc3eoWM0Q_IAQjkTHlLM__TAmIlW2qkMAaAiAdEALw_wcB

Alternative motor 2: https://n-factory.de/Flywoo-ROBO-1002-23500KV-Gold-Purple-Motor

Small Parts:

XT30 connectors: https://amzn.to/4kUqRun

Velcro straps for battery securing: https://amzn.to/3FGASfC

Balancer connector cables: https://amzn.to/4klAJxa

6x M2 x10 screws

4x M2 x6 screws

Remote Control and Goggles:

DJI remote controller: https://amzn.to/4kCkUCg

DJI video goggles: https://amzn.to/4mNgutY

Standard LiPo batteries: https://amzn.to/4dK48P0

Wiring diagram

The GPS is soldered to RX2 and TX2 (remember to connect the RX from the GPS to the TX from the flight controller) The voltage is soldered to one of the 4.5V pads, otherwise the GPS will not work when the flight controller is connected to Betaflight via USB. 

Betaflight Port Settings: