{"product_id":"hoar4s-defibrillator-practice-board","title":"HOAR4s Defibrillator -  (Practice Board)","description":"\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eGive your DRL Racer4 a new lease on life.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe HOAR4s Defibrillator is a breakout board designed to make the Racer4’s original electronics easier to connect to a conventional receiver and analog video transmitter. It plugs into the connector originally used by DRL’s RF equipment and exposes connections for installing your own equipment.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cstrong\u003e\u003cspan\u003eWhy this board exists\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eWhen DRL sent practice drones to its pilots, those drones needed to operate without the league’s specialized Race Stack system, which handled video and control connections. DRL provided a similar breakout board so pilots could connect alternative equipment.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe HOAR4s Defibrillator follows that same approach, bringing the connections from the original RF connector out to accessible solder pads.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cstrong\u003e\u003cspan\u003eAvailable connections\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe board provides access to:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eThe analog video signal intended for the video transmitter.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eThe receiver control connection.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e5V power and ground.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eAdditional UART TX\/RX connections mapped to match the original breakout board.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe UART number associated with those additional TX\/RX connections has not yet been confirmed. They are exposed to match the original board, but their function and configuration should be verified before relying on them for a particular accessory.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cstrong\u003e\u003cspan\u003eWhat this board does—and what it doesn’t\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThis board makes the original connector easier to work with. You will still need to install and configure a compatible receiver and video transmitter.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cstrong\u003e\u003cspan\u003eIt does not unlock access to the flight controller’s onboard analog OSD chip.\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e With the analog configuration described here, you will have a camera feed without Betaflight’s on-screen display overlay. It should include the original DRL OSD but it offered very little OSD information.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe exposed power pads provide 5V. Confirm that your receiver and video transmitter support that voltage and that their power requirements are compatible with the available supply.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cstrong\u003e\u003cspan\u003eIs this board required to fly the drone?\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eNo. Depending on your setup, you may be able to connect your equipment directly to the flight controller.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe flight controller has a pad labeled \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eSBUS\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e that can be used with an appropriately configured, compatible receiver. An ELRS receiver must support and be configured for the required SBUS output; simply connecting a receiver running its usual CRSF output will not make it work through that input.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eFor a basic analog installation, the camera’s video output can be connected directly to the video transmitter. That arrangement also bypasses the flight controller’s analog OSD.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe Defibrillator provides a convenient connection point for a conversion, but it is not the only way to get a Racer4 flying.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cstrong\u003e\u003cspan\u003eWhat about HDZero?\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThis board is \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003enot required for an HDZero conversion\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eMy personal preference for a Racer4 that I intend to fly is to install HDZero and update the flight controller with our custom target on the current version of Betaflight. That is a separate conversion path with its own wiring and firmware requirements; installing this breakout board alone does not perform that upgrade.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cstrong\u003e\u003cspan\u003eWho is this board for?\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe HOAR4s Defibrillator is for Racer4s owners who want to reuse the drone’s original electronics and need a practical way to connect a conventional receiver and analog video transmitter.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThis is a DIY conversion component. Soldering, receiver setup, and flight-controller configuration are required. Choose it with a clear understanding of the available connections and the analog OSD limitation described above.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eFirmware \u0026amp; Files:\u003c\/strong\u003e\u003cbr\u003ehttps:\/\/drive.google.com\/drive\/folders\/1eaGZFEpuia18d4xntFWQE_yKxnLlaL5y?usp=sharing\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eProduct does not include a vtx or receiver. \u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e","brand":"Heart of America FPV","offers":[{"title":"Default Title","offer_id":53990218170662,"sku":"sku-44347635335246","price":20.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0778\/5005\/0854\/files\/828532985_10244691062832538_7591016237926753007_n.jpg?v=1790885575","url":"https:\/\/flyfive33.com\/products\/hoar4s-defibrillator-practice-board","provider":"Five33","version":"1.0","type":"link"}