The Bench

Buying flight controllers for a whoop

Whoops use all-in-one boards: flight controller, ESCs and often the receiver on one 25.5 mm board. Pick by cell count first, then whether you want the receiver built in.

Check before you buy

• 1S or 2S rating that matches your batteries.
• Built-in ELRS receiver (simplest) or a UART for a separate one.
• Battery connector (BT2.0 or PH2.0) that matches your packs.

Do I need a board with a built-in receiver?

Not required, but it saves weight and wiring. An ELRS receiver on the board means you only bind your radio and fly.

What does 5A or 12A mean on a whoop AIO?

The continuous current each ESC can handle. 5A is plenty for 0802 motors on 1S; 2S 75 mm builds with 1102 motors want 12A.

Go deeper

• How to choose a whoop flight controller
• How to set up Betaflight for beginners
• Receiver UART vs SPI