The idea is to build a drone that identifies the target and drops a teddy bear on it.
To achieve this, we'll need Raspberry PI 5 and Oak D-Lite Stereo Depth camera.

You load machine learning models into that camera. A practical example is a drone that follows you because it can measure the distance to you from that camera or a drone that drops teddy bears on targets it identifies. We'll employ the support of neural networks libraries OpenCV and DepthAI in Python.

Flight/ESC controller stack:
HolyBro Kakute H7 V1.3 MPU6000 Flight Controller Stack

Motors: 4x1300kv EMAX ECOII Series ECO II
Frame: Cheap 7-inch APEX HD clone from AliExpress

Propellers: 2 Pairs HQprop 7x4.5x3 Propellers 7045

Betaflight now 4.6 supports autohover. You'll need a GPS module and a magnometer:
HGLRC GPS Module

Currently (22 Mayb 2025) only web version of Betaflight supports 4.6 Betaflight firmware

As my RadioMaster Boxer radio is 2.4GHz, I had to buy this module for my radio to add support for 915mhz:
HappyModel ES900TX

Radio receiver:
HappyModel ES900RX 915Mhz

This smokestopper is a lifesaver for a newbie as it reduces anxieties and protects your expensive flightcontroller:
VIFLY ShortSaver2 ShortSaver

6S battery as meant to be a long-range drone:
LiitoKala 8000mAh 6S

Great lipo charger:
HTRC T400 Pro Lipo Battery Charger

Buzzer:
IFlight YR50B_S Finder

Multimeter:
ANENG A3009 Digital Multimeter

Capacitor:
1000UF

Solder Core wire Flux 2.0% 63/37
To connect your battery to flight controller, you'll need a XT60 Male With Sheath Connector Pigtail 12AWG
For rainy weather I got FPV Worry Free High Performance Waterproofing.
Isopropyl alcohol from Bunnings even though the flux is no clean with an old toothbrush.

Great pracitice boards:
DIATONE MAMBA Soldering Practice Board

Iron:
Pinecil TS100 V2

Best tip for soldering flight controllers:
TS-BC2

Crimper, wire cutters, tweezers, threadlocker, two-sided tape, heat-resistant pad, blutack, insulation tape, straps, pliers, wire sponge, , no clean flux, microusd for flight controller, card reader, M3 screws, M3 nylon screws, headlamp for soldering, flight controller to laptop cable, no clean flux, M3 shock absorbers, Micro HDMI cable for Raspberry PI