Warm reminder: Due to the of integration of this PCB, the overall solder joints are relatively small. For those who have no soldering ability or do not know how to use a soldering iron, or are just started, or friends who know about Betaflight, please proceed with caution. We will not provide step-by-step technical support for open source products Adopts STM32F411 processor, ICM42688-P gyroscope, integrated OSD, built-in 5V/1.5A BEC, built-in ELRS 2.4G receiver, built-in VTX 5.8G 400MW image transmission module, supports 1-2S12A four-way brushless ESC This board does not have a black box or barometer module. If you encounter difficulty in starting the motor when using 1S power supply, please adjust the starting power value to a value that can be started appropriately The AIO's image transmission does not have the LowPower Disarm function turned on by default (it can be understood as: unlocking the image transmission is the maximum power, locking the image transmission is the minimum power, which can reduce the temperature of the PCB during adjustment)If the built-in ELRS is not used, an external SBUS receiver can also be supported (Due to different batches, the printed words on the product will be different, which does not affect use) Model: F411ELVTX Main control chip: STM32F411CEU6 (100MHZ, 512K) Gyroscope: -42688-P Barometer: None OSD chip: AT7456E Black box: none LED programming: support ring: support Input voltage: 1-2S I2C interface: support BEC: 5V/1. 5A Camera input: support Serial control port: two channels (UART1 is used for internal ELRS receiver and external SBUS, UART2 is used for internal 5.8G VTX Smart Audio) Flight control firmware: Betaflight 4.4.2 JHEF411.HEX ESC current: 12A 4 Galvanometer: yes Firmware: BLHELI_S Z-H-30.HEX Whether to support : support 24K48K96K Flight controller default ESC drive protocol: DSHOT300 Receiver type: ELRS Receiver frequency: 2.4G Receiver signaling protocol: CRSF Receiver firmware: EP24.V3.0.0 Whether to support WIFI update ELRS firmware: Yes Image transmission frequency: 5.8G Image transmission channel: 48CH Image transmission power: 25mw, 100mw, 200mw, 300mw, 400MW Image transmission OSD parameter adjustment protocol: Smart Audio Conversion between hole position and shock-absorbing ball hole position: M3, 25.5x25.5MM Colour:Black Material:PCB Package Contents: 1 x Flight Controller 4 x Shock Balls 1 x 5.8G Antenna 1 x 2.4G ELRS Antenna 1 x 2.0MM Plug Cable Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.