FPV Bible

Tools.

Interactive calculators built from real field data. Pick your inputs, get your answer — no forum digging required.

Prop Selector

Choose diameter, pitch, and blade count. Get thrust range, amp draw, motor KV recommendation, and stator size.

Choose your frame rate and lighting conditions. Get the correct shutter speed and ND filter stop — including Log profile adjustments.

Choose prop size and battery cell count. Get the recommended KV range, stator size, and motor examples.

Choose capacity and C rating. Get max burst current, sustained current, and build compatibility across common quad types.

Enter altitude and temperature to see your density deficit and get specific prop pitch, diameter, and cell-count adjustments.

Drag P, I and D and watch a live step-response scope react. See overshoot, prop wash, drift and hot motors before you open Betaflight.

Enter your motor current draw, cell count, and use case. Get a recommended ESC rating, voltage compatibility check, and battery C-rating cross-check.