SKU: 83734957447

Happymodel Crazybee F4 V3.1 2-4S 4in1 12A AIO Flight Controller - SPI Frsky

Sale price$29.03 Regular price$32.26
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Ships within 48 hours · Estimated delivery Jul 28 - Aug 2

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Description

Happymodel Crazybee F4 V3.1 2-4S 4in1 12A AIO Flight Controller - SPI FrskyThe Crazybee F4 V3. 1 Flight Controller comes pre soldered with a Frsky SPI receiver and XT30 power wires. This flight controller is the default FC for TheFPFlea and the Happymodel Cine8 85mm Brushless CineWhoop, but great for other ultra light micro drones that need space and weight savings. Build your micro drone with this AIO flight controller and solve three things at once! Just add a VTX like the Happymodel Diamond VTX and your stack is good to

The Crazybee F4 V3.1 Flight Controller comes pre-soldered with a Frsky SPI receiver and XT30 power wires. This flight controller is the default FC for TheFPFlea and the Happymodel Cine8 85mm Brushless CineWhoop, but great for other ultra-light micro drones that need space and weight savings.

Build your micro drone with this AIO flight controller and solve three things at once!

Just add a VTX like the Happymodel Diamond VTX and your stack is good to go!

Features

  • No soldering work needed
  • 5pin VTX wires... simply plug and play, and you are ready to go!
  • XT30 Power Wires
  • Built-In 12A 4-in1 ESC
  • Built-In FrSky SPI Reciever

Specifications

Crazybee F4 V3.1 Flight Controller

  • (Frsky SPI RX version) CRAZYBEEF4 V3.1 FC Firmware target: CrazybeeF4FR
  • (External TBS CRSF NANO version) CRAZYBEEF4 V3.1 FC Firmware target: CrazybeeF4FR MCU:STM32F411CEU6 (100MHZ, 512K FLASH)
  • Sensor: MPU-6000(SPI connection)
  • Board Size: 28.5x28.5mm
  • Mounting Pattern: 25.5x25.5mm
  • Power Supply: 2-4S Battery input (DC 7V-17V)
  • Built-in Betaflight OSD(SPI Control)
  • Built-in 5V 1A BEC

Onboard 12A 4in1 ESC

  • MCU Upgraded to EFM8BB21
  • Power Supply: 2-4S LiPo/LiPo HV (7v/17v)
  • Con. Current: 12A
  • Burst Current: 15A (5 seconds)
  • Support BLHeliSuite programmable
  • Factory firmware: F_H_40_REV16_8.HEX
  • Default protocol: DSHOT600

Onboard Frsky SPI D8 Receiver Version

  • CC2500 Hardware
  • Compatible with FrskyD FrskyX Frsky_X_LBT SFHSS REDPINE protocol
  • Channels: 8ch
  • Failsafe support
  • Diversity 2.4G receiver system
  • No ground interference: above 300meter

Includes

  • 1x Crazybee F4 V3.1 AIO Flight Controller
  • 4x Screws
  • 4x Damping Balls
  • 8x Spacers
  • 1x Pre-Soldered Connecting Wires
  • 1x 2.4 Receiving Antenna

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 83734957447

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4.7 ★★★★★
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Verified Purchase
Debbie Collinsworth
Lexington, US
★★★★★ 5
Happy dog!
Color: 3 PCS
Great product for a Great Dane aggressive chewer!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 17, 2026
L
Verified Purchase
Lola
Fort Morgan, US
★★★★★ 5
Good Toy
Color: 3 PCS
This dog toy is incredibly sturdy and holds up well to heavy chewing and rough play. My dog absolutely loves it and can play with it for hours without causing much wear to the toy itself. The only downside is that it’s pretty hard and heavy, so when it gets tossed around indoors, it can easily bang into walls and furniture and leave marks or dents. Great durable toy overall, but probably better suited for outdoor play or open spaces.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 27, 2026
J
Verified Purchase
Jeanelle
Phoenix, US
★★★★★ 5
The last forever!
Color: 3 PCS
These are great and last forever. My little guys are super chewers and have had these for months. Great buy!!
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Reviewed in the United States on May 1, 2026
K
Verified Purchase
Kirstyn Wheeler
Los Angeles, US
★★★★★ 5
Cute, Durable, and Keeps Them Busy for Hours
Color: 3 PCS, Color: 3 PCS
My girls are mild chewers, and these ocean-themed toys keep them entertained for hours. They absolutely love chewing on them, and the starfish, shell, and lobster designs are adorable while still being very functional. The fun shapes really hold their interest and help satisfy natural chewing instincts, which is great for keeping them busy without getting bored quickly. I’m also impressed with how well they’ve held up over time. Even with regular use, the material remains durable, easy to clean, and long-lasting. They’re made from food-grade nylon, feel safe, and encourage healthy chewing habits. Overall, these are a fantastic choice for mild to moderate chewers and a solid, long-lasting toy my girls truly love
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Reviewed in the United States on December 27, 2025
A
Verified Purchase
AE
Natrona Heights, US
★★★★★ 4
Good Dog Toy
Color: 3 PCS
These have lasted my dogs way longer than I thought. My dogs chew on them probably a few times a week, they rotate which ones they use. The only reason I am not giving 5 stars is because they are small. I think Large Chew toy, I think a Large Chew Toy. These are better fitted for Medium to Small Sized Dogs.
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Reviewed in the United States on January 6, 2026

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