DIY Wifi Controlled Drone00:00

Arduino code:https://drive.google.com/open?id=1fxU_GdICTOY2-PClH35HPMsd0cn2tM-8

Frimware upgrade:https://youtu.be/Krv-CMSfb_M

node mcu to arduino:https://youtu.be/flLMMHCNkQE

Datasheet:https://www.unmannedtech.co.uk/uploads/6/7/0/2/6702064/f3_evo_fc_manual.pdf

……………..links for buying components…………………………….
Flight controller:https://robu.in/product/f3-brushed-flight-control-board-based-sp-racing-f3-evo-brush-micro-fpv-frame/

lipo battery 2S:https://robu.in/product/orange-360mah-2s-30c60c-lithium-polymer-battery-pack-lipo/

Motors and propellers:https://www.amazon.in/gp/product/B07MXBCTRC/ref=ppx_yo_dt_b_asin_title_o02_s00?ie=UTF8&psc=1

Node Mcu:https://robu.in/product/nodemcu-cp2102-board/

It is cheapest drone that u can build because it will eliminate need of Transmitter ie-FLYSKY, which cost over 3000 rupees .
It will be best suits for swarm drones because u can connect lot of drones via single WIFI