Happymodel X12 ExpressLRS ELRS F4 12A 5-in-1 AIO FC 1-2S
£61.75 Inc. VAT
Ultra-compact 5-in-1 AIO combining F4 FC, 12A ESC, ExpressLRS receiver, 5.8GHz VTX, and OSD—perfect for 1–2S Tiny Whoop and Toothpick builds.
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The Happymodel X12 ExpressLRS F4 12A 5-in-1 AIO is a compact all-in-one flight controller designed for high-performance 1-2S builds, including Tiny Whoops and Toothpick quads. It combines a powerful F4 flight controller, 12A 4-in-1 ESC (BLHeli_S), 2.4GHz ExpressLRS SPI receiver, 5.8GHz 40CH VTX (25–400mW), and Betaflight OSD—all on a 25.5×25.5mm whoop-style board.
The integrated SPI-based ExpressLRS receiver uses the SX1280 RF chip for reliable long-range control with low latency and supports up to 500Hz packet rate. The built-in ESCs support DShot and Bluejay firmware, and the onboard VTX is SmartAudio-ready for full control via Betaflight.
Ideal for lightweight race or freestyle setups, the X12 delivers solid performance in an ultra-compact package.
Features:
- All-in-one design: FC, ESC, ELRS receiver, VTX, and OSD on a single board
- STM32F411 MCU with 100MHz and 512KB flash
- ICM20689 gyro (SPI) for low-noise, high-speed IMU performance
- Built-in 12A (15A peak) 4-in-1 BLHeli_S ESC supporting DShot and Bluejay
- Onboard SPI ExpressLRS 2.4GHz receiver with SX1280 chip
- Supports ELRS packet rates up to 500Hz
- Integrated 5.8GHz 40CH VTX with switchable power: 25mW / 100mW / 200mW / 400mW
- Betaflight OSD via SPI
- SmartAudio VTX control
- Compact 25.5×25.5mm whoop-style mounting pattern
- Compatible with 1S–2S LiPo / LiHV batteries
- Lightweight and ideal for Tiny Whoop racing or Toothpick freestyle builds
Note: Do not allow the antenna plug to touch the Motor soldering pins, as it may burn the ESC.
FC Specifications:
- MCU:STM32F411CEU6 (100MHZ, 512K FLASH)
- Sensor: ICM20689(SPI connection)
- Original whoop size compatible (25.5mm x 25.5mm mounting)
- Power supply: 1-2S battery input (DC 2.9V-8.7V)
- Built-in 12A(each) Blheli_S 4in1 ESC Dshot600 ready
- Built-in Betaflight OSD(SPI Control)
- Built-in 5.8G VTX 0mw~400mw
4in1 Specifications:
- Power supply: 1-2S LiPo/LiPo HV
- Current: 12A continuous peak 15A (3 seconds)
- Support BLHeliSuite programmable
- Factory firmware: Z_H_30_REV16_7.HEX
- Default protocol: DSHOT300
- Support Bluejay firmware
- When use Blujay firmware with 48khz, should set startup power to 1100/1200
Onboard SPI ELRS receiver Specifications:
- Packet Rate option: 25Hz/50Hz/150Hz/250Hz/500Hz
- RF Frequency: 2.4GHzAntenna : SMD antenna
- Telemetry output Power: <12dBmReceiver protocol: SPI ExpressLRSCould bind with Happymodel ES24TX , ES24TX Lite, ES24TX Slim and DIY 2.4GHz ELRS TX module(need to flash the same version ELRS firmware)
Onboard 5.8GHz VTX:
- Output power: 25mw~400mw switchable
- Frequency: 40CH
- Input voltage: 3.3V 5.5V
- Current consumption: 300mA(type)
- Frequency: 5.8GHz 5bands 40 channels(include Race band)Smartaudio ready
Included:
- Happymodel ELRS X12 F4 5in1 AIO
- Accessories
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SHIPPING & DELIVERY
We are based in the UK and ship to most destinations worldwide.
We dispatch orders during the times shown on our Dispatch Schedule. Orders placed before the daily dispatch cutoff will ship the same day (subject to stock availability). Orders placed after the cutoff will ship on the next scheduled dispatch day.
A confirmation email is sent once your order has been packed. If you need to amend your order, please contact us as soon as possible — once shipped, we’re unable to make changes.
We work with trusted delivery partners including Royal Mail, DHL, UPS, Fedex and Parcelforce. If you have a delivery requirement or would like to arrange collection, please get in touch.
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Shipping to the UK
- Order before the daily dispatch cutoff for same day dispatch.
- FREE delivery available on qualifying orders over £99 (under 1kg).
For small, low-value orders, Royal Mail First Class is our most economical option. Royal Mail Tracked 24 is the most popular choice, offering full tracking and flexible delivery options. For guaranteed next working day delivery, we recommend Royal Mail Special Delivery.
Royal Mail delivers to residential addresses Monday to Saturday, while courier services (including DHL) typically deliver Monday to Friday.
International Postage
- USA orders: Import duties and taxes are prepaid by us — no additional customs charges on delivery.
- Other destinations: Customs duties or import taxes may apply and are the responsibility of the recipient.
Smaller, lower-value orders may be sent via Airmail or tracked postal services. Economy road and express air courier options are available depending on destination. For faster delivery, we recommend express air courier services such as DHL Express, which typically deliver within 1–2 working days across Europe and a few working days for most other destinations.
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