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by walrus01 2655 days ago
If you want to build a really cheap drone that can actually do autonomous GPS-guided stuff, the Kakute F7 can be flashed with Arducopter (Arudpilot), and is $49 with a power distribution board. Mostly intended for small racing drones, but can be used for other purposes.

https://www.getfpv.com/holybro-kakute-f7-aio-flight-controll...

https://shop.holybro.com/c/kakute-f7_0486

Or you can get the version that combines a four motor ESC in a stack with the version of the Kakute F7 that doesn't have a built in PDB (power distribution board), for under $120.

https://shop.holybro.com/kakute-f7-amp-tekko32-f3-metal-4in1...

other parts needed to complete something: motors, propellers, frame, battery, video tx (for something like 5.8 GHz band goggles), RC receiver, wiring, ublox m8n GPS receiver.

want a cheap frame? It'll be heavier than ordering a $45 carbon fiber frame from banggood or gearbest or aliexpress or such, but you can 3d print one at the cost of maybe half of a spool of $18 PLA filament:

https://www.thingiverse.com/thing:261145

https://www.thingiverse.com/thing:1206960

2 comments

This is all great advice. Ardupilot/Arducopter is heavy duty stuff, you can make a quadcopter/plane/whatever that will fly completely autonomously by giving it waypoints on a Google Maps interface. Highly recommended, I've built a plane like this and very much enjoyed the process.

Total flight time was around thirty seconds because I managed to crash it twice, but live and learn.

What is the approximate price range to get everything needed?
absolutely everything, there's some common ground station stuff (your handheld transmitter, and goggles or 7" LCD monitor + video receiver), that's an unavoidable upfront cost separate from the aircraft itself. Figure at minimum $300 to $400 for that.

For a small quadcopter, $400-500 total parts cost, anything below that will involve a lot of quality compromises.

Take a look at some of the RTF / ready to fly specifications sold by getfpv.com or helipal.com for examples.