AIO Flight Controller Selection Guide

Understanding Whoop FCs:

The Whoop flight controller boasts a 25.5×25.5mm mounting pattern. Commonly referred to as AIO FC, this single board integrates ESC, FC, and OSD. For weight-conscious enthusiasts, there are options with integrated radio receivers and VTX, with a recommended 45-degree rotation during installation.

Decoding Toothpick FCs:

Toothpicks, a distinct category of ultralight fixed-point video drones, feature slender, toothpick-like limbs. While Whoop style FCs were initially integrated into Toothpick setups, manufacturers have honed a specific FC for toothpick constructions. The mounting pattern matches that of Whoop FC (25.5×25.5mm), often slightly larger for additional solder pads. Notably, Toothpick FCs boast stronger ESCs, supporting up to 55A (6S).

Unveiling Mounting Patterns:

The official mounting pattern is 1 inch (25.4mm), but variations like 25.5mm, 26.0mm, or even 26.5mm exist due to a lack of standardization. Although the differences are negligible, adhering to 25.5mm is recommended to avoid surprises during frame installation.

Strategizing the Best Flight Controller Selection:

To streamline FC selection, consider specific criteria tailored to your build:

• Frame compatibility: Whoops or toothpick frames
• LiPo voltage support
• ESC current rating
• Motor connections: Direct solder or "plug and play"
• Integrated receiver and VTX
• Additional UART for peripherals like DJI Air Unit, Vista, GPS, etc.

Showcasing the Best All in One Flight Controller:

1. iFlight BLITZ F411 1S 5A AIO:
   
   iFlight's Blitz F411 1S 5A flight controller, designed for little whoops, integrates VTX and a radio receiver (FrSky D8 or ELRS). The ELRS variant includes a built-in ceramic tower antenna, and the VTX output power ranges from 25/50mW. The board weighs 4.4g excluding the VTX antenna.

2. BetaFPV F4 AIO 2-4S V3 (12A / 20A):

   Tailored for 75mm, 85mm, and 95mm whoop frames, this board supports up to 4S LiPo. Despite its 26x26mm mounting, it can be adapted to a 65mm frame. Noteworthy is the absence of an integrated RX, necessitating external connections. The additional weight of an external RX has minimal impact on brushless whoops.

3. MEPS AIO Flight Controller F411 15A:

   Specifically crafted for 1S racing whoops and 1S long-range toothpicks, this FC incorporates a 32-bit ESC chip for swift response and customizable parameters. Features include small current plugging, high current soldering, and a plug-in motor plug, eliminating the need for welding. Recommendations include FPV Motor SZ0802 and FPV Propellers SZ1218, making it an exemplary choice for the best 1S esc&FC configurations.