20×20 Mini Flight Controllers
20×20 Mini Flight Controllers
32 products
20×20 flight controllers use the mini mounting pattern — four holes 20mm apart, taking M2 or M3 screws — and go into 3 to 4-inch quads, toothpicks with separate ESCs, and 5-inch frames built around mini stacks. This page collects every 20×20 flight controller in our Flight Controllers range. Pick the processor and firmware first (F4 and F7 for Betaflight, H7 for INAV, ArduPilot or Betaflight with everything enabled), then count UARTs against your receiver, GPS and video system, and check the input voltage range.
How to choose a 20×20 flight controller
The board decides how much you can plug in. A digital air unit, an ELRS receiver, a GPS and ESC telemetry each want a UART, and a mini board has fewer of them than a 30×30 one, so count before you buy.
- Processor: F405 for standard quads; F722 and F745 for more UARTs and headroom; H743 for INAV or ArduPilot, or for running Betaflight's full filter set.
- Gyro: MPU6000, ICM42688 and BMI270 are all fine on current firmware; MPU6000 is the classic low-noise choice.
- Input voltage: many mini boards are 2–6S; whoop-class F411 boards may be 1–4S. Check before wiring a 6S pack.
- Extras: some boards integrate a VTX, ELRS receiver or a Bluetooth module, saving weight on small builds.
What we stock
Matek's H743-Mini V3 for INAV and ArduPilot; iFlight's BLITZ Mini F4, F7 (V1.1 and V1.2), F745 and ATF435, plus the Borg F7 Mini and SucceX-D Mini F7; Foxeer F722 V4 Mini and HGLRC Specter F722 Mini; AxisFlying Argus Mini F7; Skystars F405HD Mini V2 and F722 Mini HD Pro; the HDZero Halo H743 and NeutronRC H7BT Mini with Bluetooth; T-Motor's Mini F7 (with built-in VTX and switch) and Mini Racer F7; the TBS Lucid FC Freestyle on an ICM-42688P; the BetaFPV Cube F411 with a 5.8GHz VTX for 2–4S micros; and the MicoAir NxtPX4 V2 Mini for PX4.
Compatibility
20×20 boards fit mini frames directly, and many 5-inch frames are drilled for 20×20 as well as 30.5×30.5; otherwise use an adapter plate. Pair them with a 20×20 4-in-1 ESC of the same maker where you can — the ribbon-cable pinouts differ between brands, and a mismatched cable means soldering eight wires instead of plugging one in.
Check for a barometer if you plan to fly INAV or ArduPilot: it is needed for altitude hold, and not every mini board carries one.
Frequently asked questions
- Will a 20×20 flight controller fit a 30×30 frame?
- Often, yes: many 5-inch frames have 20×20 holes alongside 30.5×30.5, and a 20×20-to-30.5 adapter plate covers the rest. The reverse is not possible without cutting the frame.
- F4, F7 or H7 for a mini flight controller?
- F405 for a plain Betaflight quad; F722 or F745 when you need more UARTs for GPS, a digital air unit and telemetry; H743 for INAV or ArduPilot, or for the heaviest Betaflight configurations.
- How many UARTs do I need?
- One each for the receiver, the video system (DJI, Walksnail or HDZero), GPS and ESC telemetry, so four for a full build. Boards with three UARTs need a softserial port or a shared function.