This Project stimulates the Black Eye in Rainbow Six® Siege. The main function of this product is controlling the Camera movement by NRF. This article was sponsored by JLCPCB the largest PCB prototype company in China.  Step 1: Project Development Tools 1 MCU Development MCU: Atmega 32U4 Developed by Arduino. The Atmega 32u4 corresponds to Leonardo of the Arduino 2 Pcb Layout by [EasyEDA](EasyEDA); PCB prototype by [JLCPCB](JLCPCB); Parts Sourcing in [lcsc](LCSC) 3 3D Software by SolidWorks Step 2: The Master 3.1.1 operation mechanism: After the control panel starts, the setup() part is initialized. 1) initialize the NRF module and start the ACK mode. 2) initialize Analog IO: A0 A1. Corresponding rocker potentiometer. 3) initialization button interrupt. Buttons use interrupts directly for input instead of scanning. Anyway, enough interrupts for XD) 4) initialize the OLED and display a two-second Black Eye icon. After the initialization is complete, the control board in the loop() will continue to send data through the NRF (command 7) and attempt to retrieve the ACK return package. If the data of the returned package is returned correctly, the connection is successful and the screen enters working mode. The ACK return packet contains the following information: steering gear speed, battery voltage, chart transfer switch status, steering gear switch status. No matter whether the connection is successful or not, the control board will still send the control command: Command 1/2/3/4: used to control steering gear Command 5/6/8: used to control steering gear power/chart power/change steering gear speed Sending Command7 without a reply for more than 3 seconds is considered a disconnected connection. Step 3: The Master 3.2 the Master 3.2.1 operation mechanism: Similar to Master, setup() does NRF and IO initialization. A0 gets the battery voltage, and the control1/2 is used to switch on and off the MOS tube that controls the graph transmission and the steering gear power supply. In the loop(), commands from the Master will be received repeatedly, processed, and returned via an ack. Step 4: The Schematic Diagram The schematic diagram in easyeda.com   Step 5: PCB The PCB manufactured in [JLCPCB](JLCPCB) which only charges $2 for 5 pcs PCB Prototype within 2 days.