--- product_id: 328176949 title: "HAPPYMODELELRS F4 2G4 AIO 5in1 Flight Controller Built-in SPI 2.4GHz ELRS RX for 1S Tinywhoop Race Toothpick Freestyle" brand: "happymodel" price: "657 zł" currency: PLN in_stock: true reviews_count: 1 url: https://www.desertcart.pl/products/328176949-happymodelelrs-f4-2g4-aio-5in1-flight-controller-built-in-spi store_origin: PL region: Poland --- # Low Latency 2.4GHz RX 5in1 AIO HAPPYMODELELRS F4 2G4 AIO 5in1 Flight Controller Built-in SPI 2.4GHz ELRS RX for 1S Tinywhoop Race Toothpick Freestyle **Brand:** happymodel **Price:** 657 zł **Availability:** ✅ In Stock ## Summary > 🌟 Elevate Your Flight Experience! ## Quick Answers - **What is this?** HAPPYMODELELRS F4 2G4 AIO 5in1 Flight Controller Built-in SPI 2.4GHz ELRS RX for 1S Tinywhoop Race Toothpick Freestyle by happymodel - **How much does it cost?** 657 zł with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.pl](https://www.desertcart.pl/products/328176949-happymodelelrs-f4-2g4-aio-5in1-flight-controller-built-in-spi) ## Best For - happymodel enthusiasts ## Why This Product - Trusted happymodel brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **User-Friendly Setup:** Easily adjust packet rates via the ELRS interface for seamless binding. - • **Real-Time Monitoring:** Onboard voltage and amperage meters for precise performance tracking. - • **Unmatched Performance:** Equipped with the SX1280 chip for high sensitivity and rapid packet rates. - • **Versatile Compatibility:** Perfect for Tiny Whoop racing and Toothpick freestyle, plus ultra-lightweight Nano Long Range platforms. - • **Revolutionary Integration:** Experience the world's first AIO 5in1 F4 Flight Controller with built-in SPI 2.4GHz ExpressLRS receiver. ## Overview The HAPPYMODELELRS F4 2G4 AIO 5in1 Flight Controller is a cutting-edge device that combines a SPI 2.4GHz ExpressLRS receiver, Dshot protocol ESC, and a 5.8GHz video transmitter, all in one compact unit. Designed for high-performance applications in Tiny Whoop racing and freestyle flying, it features advanced monitoring capabilities and user-friendly setup options. ## Description HAPPYMODEL ELRS F4 2G4 AIO 5in1 Flight Controller Built-in SPI 2.4GHz ELRS RX for 1S Tinywhoop Race Toothpick Freestyle Bind procedure: 1. Power the flight controller by connecting USB. Please make sure that the port driver of the flight controller is correctly installed on the computer, then open Betaflight Configurator(Latest version) to connect, enter to the "receiver" interface, and then click "Bind Receiver", the red LED at the bottom of the flight controller will flash quickly, which means that the SPI ELRS receiver enters the bind mode. There is another way to make the receiver enter the bind mode: after connecting to the Betaflight configurator, move to the CLI interface and enter "bind_rx" in the command line. 2. After correctly connecting the ES24TX or ES24TX Lite/Slim module or DIY 2.4G ELRS TX module to your Opentx radio transmitter, copy the latest version of ELRS.LUA file to the SD card in the remote controller. The directory is "SD Card/Scripts/tools", Then run ELRS.LUA and upgrade the specified TX frimware through Wifi, and then click "bind" to link with the SPI ExpressLRS receiver. Note: You need to adjust the Packet Rate to 500Hz from the ELRS interface of your radio controller before binding. 3. After the binding is successful, the Red LED at the bottom of the flight controller will getting to be solid, and the telemetry can be received at the same time. 4. The meaning of the LED status of the SPI receiver: the LED is getting to be solid, indicating that the bind is successful or the connection and communication is normal, the LED flashing quickly indicates that the receiver is in binding mode, and the LED flashing slowly indicates that the there is no signal received from the radio controller. ## Features - The World?s First AIO 5in1 F4 Flight Controller with integrated SPI 2.4GHz ExpressLRS receiver. - The Flight Controller integrates SPI controlled 2.4GHz ExpressLRS receiver, Dshot protocol 4-in-1 ESC, 5.8GHz 40ch video transmitter and Betaflight OSD. - The 2.4GHz ExpressLRS receiver is equipped with the SX1280 radio frequency chip with high sensitivity, high packet rate and low latency that is suitable for use in Tiny whoop Race or Toothpick Freestyle, and can also be used in 1S ultra-lightweight Nano Long Range platform. - Onboard Voltage and Amperage Meters Settings: Voltage meter scale setting 110 ; Amperage meter scale setting 1175. - Warm tops: Please adjust the Packet Rate to 500Hz from the ELRS interface of your radio controller before binding. ## Images ![HAPPYMODELELRS F4 2G4 AIO 5in1 Flight Controller Built-in SPI 2.4GHz ELRS RX for 1S Tinywhoop Race Toothpick Freestyle - Image 1](https://m.media-amazon.com/images/I/51PGpvjMtWS.jpg) ![HAPPYMODELELRS F4 2G4 AIO 5in1 Flight Controller Built-in SPI 2.4GHz ELRS RX for 1S Tinywhoop Race Toothpick Freestyle - Image 2](https://m.media-amazon.com/images/I/51EAZBBMQCS.jpg) ![HAPPYMODELELRS F4 2G4 AIO 5in1 Flight Controller Built-in SPI 2.4GHz ELRS RX for 1S Tinywhoop Race Toothpick Freestyle - Image 3](https://m.media-amazon.com/images/I/51ijEotsvbS.jpg) ![HAPPYMODELELRS F4 2G4 AIO 5in1 Flight Controller Built-in SPI 2.4GHz ELRS RX for 1S Tinywhoop Race Toothpick Freestyle - Image 4](https://m.media-amazon.com/images/I/61zg48slfAS.jpg) ![HAPPYMODELELRS F4 2G4 AIO 5in1 Flight Controller Built-in SPI 2.4GHz ELRS RX for 1S Tinywhoop Race Toothpick Freestyle - Image 5](https://m.media-amazon.com/images/I/6147Q7Ka0mS.jpg) ## Customer Reviews ### ⭐ 1.0 out of 5 stars Great promise and horrible failure *by Y***N on Reviewed in the United States on November 27, 2021* Happymodel have real reliability problem. My first crazybee F4 FrSky built-in reciever had his VTX fried with no reason so I decided to buy this one.It should had much more powerful 200mw VTX and built-in ELRS reciever so I had high hopes for it.In reality, the board worked less than few days before it's VTX failed (antenna connected of course) and soon after some ESCs.Bottom line, I'm done with Happymodel. --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.pl/products/328176949-happymodelelrs-f4-2g4-aio-5in1-flight-controller-built-in-spi](https://www.desertcart.pl/products/328176949-happymodelelrs-f4-2g4-aio-5in1-flight-controller-built-in-spi) --- *Product available on Desertcart Poland* *Store origin: PL* *Last updated: 2026-05-26*