We ship worldwide - Same day shipping on all orders placed before 1pm - FREE delivery on UK orders over £99 <1kg*
The CrazyBee F4 is a compact 2-4S brushless F4 flight controller with integrated 4in1 ESC, BetaFlight OSD, and 2.4G receiver all on the same board. You only need to add motors, VTX and Camera to complete your setup. It’s one of the most popular FCs for Tiny Whoops, Toothpick Drones and Micro Drones.
This is the latest revision of the board which features an updated MCU from STM32F303 to STM32F411 and also with an extra UART added, making it with two UARTs in total. It also now includes a built-in current sensor and uprated 10A per channel ESC.
Note: For 3inch propellers, we recommend using 2-3S only.
We sell the FC with a choice of a SPI receivers - FrSky or FlySky. The FrSky version is preset to EU LBT, but can be set to FCC D8 or D16 in BetaFlight.
- Processor: F4 MCU
- Gyro: MPU6000 IMU
- Built-in Betaflight OSD
- Weight: 4.3g
- Board size: 28.5×28.5mm
- Input Voltage: 2S – 4S LiPo (7V – 17V)
- Built-in Blheli_S 4in1 ESC
- ESC Current Rating: continuous 10A, burst 12A (each motor)
- ESC MCU: EFM8BB21
- ESC Protocol: Dshot600
- ESC can be flashed and configured using BLHeliSuite via FC passthrough
- ESC firmware: F_H_40_REV16_5.HEX
- Built-in RX and No RX options available:
- Frsky SPI receiver with telemetry (D8/D16 switchable)
- Flysky SPI receiver with telemetry (AFHDS/AFHDS-2A Compatible)
- Spektrum DSM2/DSMX compatible satellite receiver (Default RX2 was used for DSM2/DSMX receiver）
- The “No RX” version supports external serial receiver such as XM+, Crossfire, S-FHSS and DSM2/DSMX, iBus
- Built-in Current sensor with maximum capacity up to 70A
- Please set Current Meter Scale to 470
- Built-in 5V 1A voltage regulator with LC filter for clean FPV Video
- Built-in voltage detection
Sorry, we don't currently have any product related advice for this item. For general tips, tutorials and help please check out our Multirotor Beginner's Guide. Alternatively feel free to ask us a question.
COVID-19: We are still shipping out orders daily, but have changed our same day shipping cut-off time to 1PM to help cope with demand. If an order is placed after 1PM we will still do our best to ship same day as our daily postal collection is around 4:15.
Please be aware that deliveries with Royal Mail are taking longer to get through. At the moment we are finding it can range from next day to even up to two weeks, with 3-5 days being typical. So if you choose Royal Mail as a shipping method please be patient, shipments aren’t going missing they are just taking a while to get through the postal service. For fast deliveries we recommend choosing DHL.
All information relating to shipping and delivery is stated here. Should you not find what you are looking for, please contact us.
Shipping costs are calculated once items have been placed in your basket during checkout.
UK Postage: Here at Flying Tech we process orders Monday to Friday and pride ourselves on our quick turnaround of orders. If stocks levels allow, we aim to dispatch orders placed before 4PM the same day with Royal Mail. Our cut off time for courier delivery is earlier; orders must be placed by 1PM for next day delivery with DHL and 1PM for next day delivery with APC. A confirmation email will be sent when your order has been dispatched. If you wish to change your order, please contact us promptly, as we won't be able to make amendments once the order has been shipped.
We are partnered with several delivery companies including Royal Mail, DHL, APC and Parcel Force. If you have a special delivery requirement or would like to arrange a shop collection please contact us. For small low value orders our cheapest delivery service is Royal Mail First Class; this service aims to deliver the next working day including Saturdays and it can be sent recorded for extra peace of mind – please note this is not a guaranteed next day delivery or trackable service.
For a guaranteed next day delivery we recommend Royal Mail Special Delivery or one of our courier delivery options. Royal Mail Special Delivery will arrive by 1PM the next day and for an extra fee can be delivered on Saturdays. APC Overnight offers next day delivery with full tracking and a 2hr time slot pre-delivery text notification. DHL is a good option for larger consignments and remote locations such as Northern Ireland and Isle of Man. All high value orders are fully insured and will likely require a signature on delivery.
FREE shipping in the UK on orders over £99 (this is a signed for service and insured to a maximum of £40). Please note that the offer only applies to orders with a total weight under 1Kg and that a few products are exempt from the offer, such as LiPo batteries.
International Postage: We are based in the UK, but ship to most worldwide destinations. Postage rates are calculated by the weight and shipment location, the price is quoted during the checkout. Low value order can be sent by Air Mail, but are not insured. Higher value, heavy goods will be sent with DHL or an alternative courier. Orders shipped outside the UK may be subject to customs charges. These charges are additional to any delivery costs and will need to be paid by the recipient.
For our international customers who require a rapid delivery we off a DHL Express service. DHL Express offers NEXT DAY delivery to most European destinations and a very fast delivery for countries further afield, generally 2-3 days. For country specific estimated transit times, please refer this download.
We reserve the right to modify, remove or add to any of these services at any time. We endeavour to ship all items as fast as possible. If you would like an alternative shipping arrangement to be made please contact us.