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Description
CrazyF411 AIO Toothpick Flight Controller + Receiver (20A ESC, OSD, Frsky RX)The CrazyF411 from Happymodel is an F4 toothpick flight controller with OSD, that also managed to include 4x 20A ESC and a Frsky compatible receiver built into the board, making this flight controller ideal for a very compact and lightweight toothpick build. The receiver also includes a PA LNA power amplifier to enable much greater range compared to some other flight controllers with built in receivers (up to 400m range). Features 25. 5x25. 5mm FC AIO
The CrazyF411 from Happymodel is an F4 toothpick flight controller with OSD, that also managed to include 4x 20A ESC and a Frsky compatible receiver built into the board, making this flight controller ideal for a very compact and lightweight toothpick build.
The receiver also includes a PA/LNA power amplifier to enable much greater range compared to some other flight controllers with built in receivers (up to 400m range).
Features
- 25.5x25.5mm FC AIO ESC board for toothpick .
- Most powerful for whoop / toothpick style flight
- Supports 2-4s battery input and provides 20A to the motors.
- Also Integrated SPI Frsky receiver working with D8/D16 protocols.
- This integrated receiver has PA/LNA power amplifier and the diversity antenna., This should give more control range for this flight controller.
Specification
Brand Name: Happymodel
Model: CrazyF411 AIO
Item Name: F4 Flight Controller Built-in 20A BL_S ESC & Frsky Receiver
| F4 Flight Controller |
MCU:STM32F411CEU6 (100MHZ, 512K FLASH)
Sensor: MPU-6000(SPI connection) Board size: 28.5 * 28.5MM Power supply: 2-4S battery input (DC 8V-17V) Built-in 20A(each) Blheli_S 4in1 ESC Dshot600 ready Built-in Frsky D8/D16 SPI receiverBuilt-in 2.4G Power Amplification Built-in Betaflight OSD(SPI Control) Built-in Current meter Built-in 5V 1.5A BEC Built-in voltage detection Firmware target: MATEKF411RX Yaw Degrees should set to "-90 degree" to match the flight direction |
| Onboard 20A ESC |
MCU upgraded to EFM8BB21
Power supply: 2-4S LiPo/LiPo HV (7v/17v) Current: 20A continuous peak 25A (5 seconds) Support BLHeliSuite programmable Factory firmware: F_H_40_REV16_7.HEX Default protocol: DSHOT600 |
| Internal Frsky NON-EU receiver Version |
SPI BUS receiver
Frsky D8/D16 compatibleCompatible Non EU transmitter both D8 mode and D16 mode Channels: 8ch/16chDual antenna Failsafe support No ground interference ( Transmitter and receiver 1 m from the ground): 400m |
Connection Diagram Pinout
How to Bind your receiver
Make the on board receiver get into bind mode: For 4.0.x version firmware Plug USB and then connect betaflight configurator and then move to CLI tab , type "bind_rx_spi" ,the Red LED on the top of the flight controller will getting to be solid , the onboard receiver is in bind mode; For 4.1.x or 4.2.x the bind code is "bind_rx"
Included
- 1x F4 AIO ESC RX Board
- 1x Cable with Connector
- 1x bag of Screws & Standoffs
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- 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
4.5 ★★★★★
Based on 929 reviews
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Product Reviews
★★★★★ 5
Excellent shirt for the $.
So far, great shirt for the $. Washed twice. No shrinkage. Few wrinkles when hung to dry. 3 minutes in the dryer solved that. I wear it for golf. Moisture wicking is great on very hot day. Was concerned the length might be too short because I wear tucked in for golf. No problems. Fit is excellent, cut on the slimmer side. I’m 5’’ 11” with a 33 waist and 41 inch chest, weigh 168. it was excellent not baggy. Not tight. I read it ran small or tight for a medium and several reviews advised to go up a size. I order the large first time and although ok, it was a bit too loose in the waist and chest and shoulder seams rode an inch or so down. I returned for the medium and perfect fit. I like collar, it’s creased firmly at the seam and won’t roll. Overall, a great value and I ordered again in green. Out of stock for other colors or would have ordered more. Long years wear is a question. We’ll see.
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Reviewed in the United States on July 16, 2020
★★★★★ 5
Excellent basic polo shirt
Size: X-Large, Color: Olive
Excellent basic polo short-sleeve shirt for business and work. I appreciate the many different colors Amazon provides for this type of shirt online. It also saved me a special trip to the department store. Needed an extra polo shirt right away.
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Reviewed in the United States on June 11, 2026
★★★★★ 5
Awesome deal for a versatile shirt!
Size: Large, Color: Black, Size: Large, Color: Black
Great fit, looks and quality for the price. I originally bought two different colors to see how they looked. After receiving them, I will buy more. They are so versatile. I’ve worn them with khakis, jeans, or shorts. Great deal!!!
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Reviewed in the United States on June 8, 2026
★★★★★ 4
Seems like a good shirt but the large is more like an XL and it it's cut big
Size: Large, Color: Black, Size: Large, Color: Black
Off the bat, here are two photos of this shirt to help you out: (1) My arms are up and it shows you how big the Large version of this polo is. There is room to spare and plenty of sleeve length. (2) I am holding up one side of the shirt at belt level to show you how long the Large version of this polo is. The photo of the GREEN shirt is NOT THE SHIRT ON THIS PAGE. The green shirt is the slim-fit version.
It's a perfectly good shirt. The problem is that the sizing is unlike any polo I have. I'm 6' 175 lbs, I would say my body type is over on the thin side. I usually buy size Large shirts. When I put this size Large shirt on, it was much bigger than I expected.
I admit, I have been wearing Gap polos for a long time and a few years ago, they went through this process of progressively cutting their polos more and more narrow. At this point, I consider Gap’s polo a fitted polo, and it’s their only polo. In other words, I have only been wearing fitted polo shirts for a long time.
I thought I would switch to a more standard polo, save a little money, and buy some of these Amazon shirts. Same size I buy in all casual shirts. Large. I was expecting a looser fit but, to me, this Large was more like an Extra Large. Much bigger than any Large shirt I had worn in a long time (maybe ever?).
I can't suggest one buy a medium to compensate because I haven't tried one. I also can't say if washing it would shrink it enough. Maybe if I washed it in scalding hot water and ran it through a dryer on the "surface of the sun" setting, it might shrink enough. I’m going to opt for returning them.
Don’t forget to take note of the length of the shirt. It’s long. My Gap polos land a couple of inches below the waistline. These shirts fall much further down (see photo). This is actually great if you tuck it in but not if you don't
Bottom line – it strikes me as a good shirt. You just need to know these are big shirts. I’m going to give the slim-fit version a shot.
*UPDATE* The slim-fit version is a MUCH better fit for me. It's almost, but not quite, too tightly cut. It is a looser fit than the 2018 Gap polo. It does shrink a bit in the wash. I've added a photo of me in a slim-fit green shirt. Also much shorter in length.
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Reviewed in the United States on March 6, 2019
★★★★★ 5
Excellent value, consistent fit, cool, comfortable and durable.
Size: Large, Color: Army Green
I have purchased 20 plus of these shirts in the past six months. The first batch in spring, figuring if any inconsistencies or quality issues arose upon delivery, no problem. Amazon's return policy has always been hassle free. After trying on the fourth shirt and noticing no outstanding flaws or differences, all were simply opened, laundered and hung on a hanger. The material is 100 percent cotton, but assuming they are removed from the dryer immediately (medium heat) - no ironing necessary. No appreciable shrinking is observed and no outliers in the batch.
My sport shirt size is men's US large regular fit. Other relevant sizes - 17.5 inch neck, 46 inch shoulders, 34 inch sleeves and 36 inch waist. Overall fit of these shirts is of appropriate roominess without bagginess. Shirt tail length is spot on, work dress code requires tucked in, and they stay tucked in. Casual requires not tucked in, and unless I am reaching for the sky with both hands while on tip toes, the shirt tail/ belt line is not breached. The sleeve length could have been extended by an inch since they taper to an elastic cuff, requiring that the sleeves are pulled back to original position following an extended reach. But given the choice, the sleeves as is are preferred over a straight cut without the elastic cuff.
As an upgrade to the T shirt appearance of the shirt tail when not tucked in, the side seams end with a reinforced, one inch inverted V, a feature not typical in this price range.
To date, durability has not been an issue. Fraying, fabric pilling and fading have not occurred. It is quite difficult, if not impossible, to differentiate the age of two duplicate color shirts purchased in two separate batches.
Again, excellent value, consistent fit, cool, comfortable and durable!
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Reviewed in the United States on October 30, 2017