BetaFPV Matrix 1S 5IN1 II Brushless Flight Controller – The Indestructible Heart

For years, 1S flight controllers have been the "glass cannons" of the FPV world. You look at them wrong, and a MOSFET pops. You crash into a pillow, and the gyro desyncs. BetaFPV apparently got tired of the support tickets, so they went back to the drawing board and returned with the Matrix 5IN1 II. It’s a 1S AIO that’s built like it expects you to crash. Because let’s be real: you are going to crash.

Overkill Is Underrated

The headline feature here is the 12A Continuous ESC (peaking at 18A). To put that in perspective, most 1S whoops run on 5A. This is like putting a V8 in a lawnmower. Do you need 12A to hover around your living room? Probably not. Do you need it to blast out of a "turtle mode" situation without turning your board into a smoke machine? Absolutely. This board doesn't just manage power; it hoards it.

We Fixed The Mounting (By Removing a Screw)

It sounds counterintuitive, but the new 3-point mounting system is actually a durability upgrade. By removing the fourth rigid point and thickening the PCB to a chonky 1.0mm, the board can flex slightly during impact rather than snapping. BetaFPV claims this reduces crash damage by 80%. We claim it means you might actually finish a race session with the same drone you started with.

Choose Your Difficulty Level

BetaFPV acknowledges that there are two types of pilots, and offers a version for each:

• Solder-Free (Plug & Play): Comes with motor plugs and wires pre-soldered. For pilots who want to fly today, not spend three hours squinting through a magnifying glass.
• Solder-Required (DIY): No plugs, just pads. For the weight-weenies and masochists who enjoy inhaling flux fumes and saving 0.3 grams. (We respect the hustle, but we worry about your sanity).

The Brains of the Operation

While the brawn is the ESC, the brain is the STM32G473 MCU. It’s faster, smarter, and handles the latest Betaflight features without breaking a sweat. Combined with the ICM42688P Gyro and onboard ELRS 2.4G, this FC is locked in. It also features a 400mW VTX, which is powerful enough to cook an egg (please don't) or blast video through your entire house.

Specifications

• FC

  • MCU: STM32G473CEU6
  • Gyro: ICM42688P
  • Blackbox memory: 16MB
  • Sensor: Voltage & Current
  • BEC: 5V, Max 3A
  • UART: UART 1, UART 2 (For VTX), UART 3 (For RX), UART 4
  • BetaFlight OSD: AT7456E
  • ESC: 12A continuous
  • RX:Serial ELRS 2.4GHz (V3.4.3)
  • VTX: 5.8GHz 48 channels, Max 400mW
  • FC firmware: Betaflight_4.5.3_BETAFPVG473_V2
  • USB port: SH1.0-4Pin
  • Motor connector: JST1.25
  • Battery connector: BT2.0
  • Mounting hole size: 26mm x 26mm
  • Weight: 4.1±0.1g (solder-free), 3.76g (soldered-required)

  ESC

  • Power input: 1S Only
  • Current: 12A continuous, 18A peak
  • ESC firmware: A_X_5_96KHz_V0.19.hex for BB51 Bluejay firmware
  • Digital signal protocol: DShot300, DShot600

  VTX

  • Output power: 25/100/200/400/PIT
  • Frequency: 5.8GHz 48 channels, with Raceband: 5658~5917MHz
  • Channel SEL: SmartAudio2.0
  • Modulation type: FM
  • Frequency control: PLL
  • All harmonic: Max -50dBm
  • Frequency stability: ±100KHz (Typ.)
  • Frequency precision: ±200KHz (Typ.)
  • Channel carrier error: ±1.5dB
  • Antenna port: 50 Ω
  • Operating temperature: -10℃~80℃

What’s in the Box*

• 1x Matrix 1S 5IN1 II Brushless Flight Controller (Chosen Version)
• 1x 5.8G VTX Antenna (Don't forget to plug this in before power)
• 1x Power Lead (BT2.0, obviously)
• 4x Shock Absorbing Balls (Squishy bits)
• 1x Screw Pack (Tiny metal bits)
• (Solder-Free version includes pre-soldered motor plugs; DIY version includes loose plugs in a bag).

Disclaimer

This flight controller is tough, but it's not invincible. If you reverse the polarity, waterboard it, or feed it to a dog, warranty does not apply. Also, please install the VTX antenna before powering up unless you like the smell of burning silicon.

Still Here?

You’re reading the specs for a circuit board the size of a postage stamp. We get it, you're thorough. But reading won't fix your current broken quad. Buy the Matrix 5IN1 II, install it (solder-free, we recommend), and go remind your household pets who rules the airspace.