What is an FPV build configurator?

An FPV build configurator lets you pick frame, motors, ESC, flight controller, VTX, camera, props and battery in one place — like PCPartPicker for drones. A2STS checks prop size, stack mounting, VTX ecosystem and battery cell count automatically.

Is the FPV build configurator free?

Yes. The configurator, AI assistant, compatibility checks and preset build pages are free. You only pay retailers when you buy parts.

DJI O4 vs Walksnail vs HDZero — which should I pick?

DJI O4 is the most popular digital ecosystem for cinematic and freestyle. Walksnail Avatar suits racers who want low latency. HDZero is open and popular for racing. Use the compare page or AI assistant to match goggles, VTX and camera in the same ecosystem.

How do I check FPV part compatibility?

Select components in the configurator — mismatches (prop vs frame, ESC current, digital protocol) are flagged instantly. Each part also has a dedicated page with specs and builds that use it.

Can the AI assistant build my FPV drone?

Type your budget, experience and style (freestyle, cinematic, long range). The AI suggests matching preset builds you can open and edit part by part.

Do I need a drone licence for FPV in Lithuania?

FPV flying still falls under EASA open or specific category rules. Use our licence finder and A2/STS exam prep if you fly commercially or above weight thresholds.