Features
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Betaflight serial passthrough. It is convenient for pilots to flash any version of ELRS RX firmware and especially can flash ExpressLRS V3.0 without updating flight controller firmware.
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The SPI Frsky version board reserves an SBUS port and a UART port, which is available for the SBUS protocol receiver or other external receivers.
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Built-in an 8MB flash memory chip dedicated to Blackbox logging. It's an extremely powerful tool for tuning and troubleshooting an FPV drone.
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Integrated motor pin connectors, it is easy to install motors without soldering work.
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Particular design with only 3.6g ultralight weight, reasonable layout, and easy to build. With a 26*26mm mounting hole size, it is fully compatible with the whoop frame in the current market.
Specifications of FC
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CPU: STM32F411CEU6 (100MHZ)
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Six-Axis: BMI270
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Built-in Receiver: Serial ExpressLRS 2.4G/SPI CC2500 (Frsky)
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Receiver antenna: Line antenna
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FC Size: 30*30mm
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Mounting Hole Size: 26*26mm
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Firmware version: betaflight_4.3.1_BETAFPVF411 (ELRS)/betaflight_4.2.11_BETAFPVF411RX (Frsky)
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OSD: Built-in BetaFlight OSD
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Blackbox: 8MB
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Recommend VTX: >=200mW, like BETAFPV M03 350mW VTX or TBS Unify VTX
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Power Cable: 55mm, with BT2.0 connector
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Weight: 3.6g(ELRS)/3.7g(Frsky), without power cable and BT2.0 connector
Specification of ESC
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Power supply: 1S
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Current: 5A continuous and peak 6A (3 seconds)
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ESC firmware: A_X_5_.HEX for BB51 BLHeli_S hardware
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Signal Support: D-shot150, D-shot300, D-shot600, Oneshot125, Multishot, PWM
F4 1S 5A flight controller with BB51 ESC hardware could flash the Bluejay ESC firmware now, which is based on BLHeli_S revision 16.7. With Bluejay ESC firmware, it supports bidirectional D-shot and RPM filtering in Betaflight, offers 24KHz, 48KHz, and 96KHz fixed PWM frequency for options, and custom start-up melodies
Pinout
Included
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1 * F4 1S brushless flight controller (BT2.0 Connector)
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4 * M1.2x4mm screws
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4 * M1.4x5mm screws
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4 * Anti-vibration rubber dampers