The SkyStars Fly Stack features a F411 Mini HD Flight Controller and a Kramam 40A BLHeli_S 3-6S 4-in-1 ESC with a 20×20 mounting pattern.

FC

• Solder pads are the largest in size compared to other mini FC in the market.
• Proper solder pad spacing to avoid solder bridges and facilitate easy soldering.
• TVS Diode for Reverse Polarity Protection and Voltage Spike Suppression.
• Powerful BEC to supply all your electronics.
• The pad arrangement is executed in such a way that when you twist the wires of the camera VTX and RX you don’t get any wire overlapping this gives you a uniform twist and clean look.
• DJI connector on the bottom side, power supply by BAT.
• Two stages of Quality check to reduce any faulty electronic.
• No power lines near Gyro to avoid any EMI interference.

F411Mini HD Betaflight Flight Controller

• Input voltage: 3-6S LiPo(11.1V~22.2V)
• MCU: STM32F411
• IMU: BMI270 (SPI)
• OSD: AT7456E
• 2 hardware UARTS (UART1,2)
• 1 software UART3
• Receiver: CRSF/SBUS/IBUS/DSM
• Barometer: NO
• Buzzer Pad: YES
• CURR Pad: YES
• BEC 5V 2A
  Blackbox: 16MB
• Firmware: Betaflight SKYSTARS F411
• Mounting Holes: 20mm/M2
• Weight: 4.3g

KO40 40A 4IN1 ESC

• Input voltage: 3-6S LiPo
• Con.Current: 40A
• Peak Current:45A≥ 10S
• Firmware: BLHeli_S
• Support: Dshot 300/600
• Mounting holes : 20X20 mm/M2
• BEC: No
• Product size: 31*30*6.9mm
• Weight: 5.4g

• 1x F411Mini HD Betaflight Flight Controller
• 1x Skystars KO40A 3-6S 20×20 4in1 ESC