{"product_id":"betafpv-air-1s-brushless-fc-4in1-2-9g-g473-5a-esc-vtx","title":"BETAFPV Air 1S Brushless FC 4IN1 – 2.9g, G473, 5A ESC, VTX","description":"\u003cp\u003eWhen every gram counts, the \u003cstrong\u003eBETAFPV Air 1S Brushless FC\u003c\/strong\u003e is the board racers reach for. At just \u003cstrong\u003e2.9g\u003c\/strong\u003e in its 4IN1 form, it combines the flight controller, ESC, OSD, and a \u003cstrong\u003e25–400mW analog VTX\u003c\/strong\u003e on a \u003cstrong\u003e0.8mm ultra-thin PCB\u003c\/strong\u003e. You can build a seriously light whoop around it.\u003c\/p\u003e\n\n\u003cp\u003eDon't let the weight fool you: it was the first 1S flight controller to use the \u003cstrong\u003eSTM32G473 processor\u003c\/strong\u003e (168MHz), which BETAFPV says is about \u003cstrong\u003e55% faster\u003c\/strong\u003e than the F411 it replaced. Pair that with the \u003cstrong\u003eICM42688P gyro\u003c\/strong\u003e (up to 8K sample rate) and \u003cstrong\u003e16MB of blackbox memory\u003c\/strong\u003e, and you get quick, precise response for racing and tight freestyle lines.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhy the 4IN1?\u003c\/strong\u003e It skips the onboard receiver so you can choose your own, and the obvious match is BETAFPV's \u003cstrong\u003eELRS Lite Receiver\u003c\/strong\u003e (sold separately). The Lite weighs about \u003cstrong\u003e0.47g\u003c\/strong\u003e, measures roughly \u003cstrong\u003e10mm square\u003c\/strong\u003e, and runs \u003cstrong\u003eExpressLRS 2.4GHz\u003c\/strong\u003e over a CRSF serial connection. The board reserves \u003cstrong\u003ethree full-featured UARTs\u003c\/strong\u003e, so there's room for the Lite plus GPS, an HD VTX, or other serial gear.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eHeads up:\u003c\/strong\u003e This is a pilot's board. The thin PCB and solder-only motor pads are built for advanced builders chasing minimum weight. If you want something tougher and more beginner-friendly, check out the Matrix 1S 5IN1 II.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIntegrated:\u003c\/strong\u003e FC + 5A ESC + OSD + 5.8GHz VTX (no receiver)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePairs with:\u003c\/strong\u003e BETAFPV ELRS Lite Receiver (sold separately)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 2.9g | \u003cstrong\u003eMounting:\u003c\/strong\u003e 26 × 26mm | \u003cstrong\u003ePCB:\u003c\/strong\u003e 0.8mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMCU:\u003c\/strong\u003e STM32G473CEU6 | \u003cstrong\u003eGyro:\u003c\/strong\u003e ICM42688P | \u003cstrong\u003eBlackbox:\u003c\/strong\u003e 16MB\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eESC:\u003c\/strong\u003e 1S, 5A continuous, Bluejay, DShot300\/600\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVTX:\u003c\/strong\u003e 25 \/ 100 \/ 200 \/ 400mW + pit mode, 48 channels, SmartAudio 2.0\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBEC:\u003c\/strong\u003e 5V 3A | \u003cstrong\u003eUSB:\u003c\/strong\u003e SH1.0 4-pin\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFirmware:\u003c\/strong\u003e Betaflight 4.5.0 (BETAFPV G473 target)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cem\u003eIncludes: Air 1S Brushless FC (4IN1), Type-C to SH1.0 adapter, SH1.0 4-pin adapter cable, 5.8G VTX antenna, 40mm BT2.0 U whoop cable pigtail, 4× M1.4×4 self-tapping screws, 4× shock-absorbing balls. Receiver sold separately.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003chr\u003e\n\n\u003cp\u003e\u003cstrong\u003eCommon Questions\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003e\u003cem\u003eWhat's the difference between the 4IN1 and 5IN1?\u003c\/em\u003e\u003c\/strong\u003e\u003cbr\u003e\nThe 4IN1 has the FC, ESC, OSD, and VTX. The 5IN1 adds a built-in ELRS 2.4GHz receiver. The 4IN1 is lighter (2.9g vs 3.6g) and lets you choose your own receiver.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003e\u003cem\u003eWhat receiver should I use?\u003c\/em\u003e\u003c\/strong\u003e\u003cbr\u003e\nBETAFPV's \u003cstrong\u003eELRS Lite Receiver\u003c\/strong\u003e is the one they recommend for this board. It's a tiny ExpressLRS 2.4GHz receiver with CRSF serial output. It needs a 5V power wire, a ground wire, and TX\/RX wires to a spare UART, and it ships with four thin silicone wires for the job. The VTX uses UART2 by default.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003e\u003cem\u003eHow do I set up and bind the Lite receiver?\u003c\/em\u003e\u003c\/strong\u003e\u003cbr\u003e\nIn Betaflight, open the Ports tab, switch on Serial RX for the UART you wired it to, and choose CRSF as the receiver protocol. To bind, plug and unplug the flight controller three times until the receiver LED does a quick double blink. Then put your radio into bind mode, and a solid light means it's bound.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003e\u003cem\u003eIs this good for beginners?\u003c\/em\u003e\u003c\/strong\u003e\u003cbr\u003e\nIt's aimed at advanced pilots who want the lightest build possible. The board is very thin and the motors must be soldered directly, so it takes some soldering confidence. Newer pilots will likely prefer the Matrix 1S 5IN1 II, which is tougher and has plug-in motor connectors.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003e\u003cem\u003eWhat does it fit?\u003c\/em\u003e\u003c\/strong\u003e\u003cbr\u003e\nIt uses a 26×26mm mounting pattern. BETAFPV recommends it for the Air65 and Air75 whoops, and it works with Meteor65, Meteor65 Pro, and Meteor75 Pro frames and 0702, 0802, or 1102 motors.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003e\u003cem\u003eAny tips for soldering and VTX safety?\u003c\/em\u003e\u003c\/strong\u003e\u003cbr\u003e\nSolder the motor wires directly, since there are no plug-in connectors on this board. Keep the iron under 370°C and limit each joint to 1–2 seconds so you don't lift a pad. Always connect the VTX antenna before powering on (or set VTX power to zero), and use 25–100mW indoors for better flight time.\u003c\/p\u003e","brand":"BETAFPV","offers":[{"title":"Default Title","offer_id":53104847913240,"sku":null,"price":62.86,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0948\/1122\/6392\/files\/d8ec5fc669d336cc3acd4669d4a65584_540x_d0e5246f-79d0-4603-b877-ac4ee9581687.webp?v=1793497538","url":"https:\/\/launchpadfpv.ca\/products\/betafpv-air-1s-brushless-fc-4in1-2-9g-g473-5a-esc-vtx","provider":"LaunchpadFPV","version":"1.0","type":"link"}