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rc:krieger

Krieger

Specifications
Frame Shendrones Krieger (5“ arms)
FC X-Racer F303 v2.1
Motor Cobra 2204 2300KV x 4
ESC Favorite Littlebee 20A x 4
BEC Pololu D24V10F5, 5V 1A
OSD Micro MinimOSD
Misc Rctimer Voltage & Current Sensor
Prop DAL Prop 5045 (breaks in mid air)
DAL Prop 5045BN (too heavy)

HQProp 5045
Receiver Corona R4FA-SB
Camera RunCam 600TVL Mini with 2.8mm lens
VTX Aomway Micro 200 mW 32ch 5.8GHz
Antenna ImmersionRC Circular Polarized SpiroNET v2
Battery Turnigy nano-tech 4S1P 1800 mAh 65-120C
Weight 340 g
565 g (with 4S1P 1800 mAh battery)
M2M 20 cm
Flight time 6-7 minutes of cruising
4-5 minutes of faster flying

Notes

  1. Edges of frame pieces should be sanded to avoid wear in wiring.
  2. ImmersionRC transmitters aren't well suitable for this frame due to size issues.
  3. A BEC will need to be used as some components can't be powered directly from a 4S battery.

Settings

Betaflight (2.8.1)

  • Reversed prop rotation
    • set yaw_motor_direction = -1
  • RSSI
    • feature RSSI_ADC
    • set rssi_scale = 23
  • Voltage Sensor
    • feature VBAT
    • set vbat_scale = 112
    • set vbat_min_cell_voltage = 33
    • set vbat_warning_cell_voltage = 34
  • Current Sensor
    • feature CURRENT_METER
    • set current_meter_type = ADC
    • set current_meter_scale = 366
      • use 732 for a 45A sensor (or if the board fails to act like a 90A)
  • No beeper when USB is connected
    • beeper -ON_USB
  • Switches
    • AUX1
      • Up: Angle
      • Middle: Horizon
    • AUX2
      • Up + Middle: Arm
      • Up: Air Mode
    • AUX3
      • Up: Blackbox
    • AUX4
      • Up: Beeper
      • Middle: OSD SW
  • Serial
    • serial 0 1 115200 57600 0 115200
    • serial 1 1 115200 57600 0 115200
    • serial 2 64 115200 57600 0 115200
  • Onboard flash for blackbox
    • set blackbox_device = SPIFLASH

BLHeli (14.6)

  • Programming by TX disable
  • PWM Frequency / Damped: DampedLight
  • Motor Timing: MediumHigh
  • Beacon Delay: 5 minutes
  • PPM Min Throttle: 1040
  • PPM Max Throttle: 2000
  • Motor Direction Reversed for motors 2 and 3

MWOSD (1.6)

In Config.h

#define MICROMINIMOSD
#define BETAFLIGHT
#define HORIZON
//#define MAPMODE
//#define MAVLINKREQ
#define AUTOCAM
#define USE_VSYNC
#define FASTPIXEL
#define WHITEBRIGHTNESS 0xB
#define AUTOCELL
#define FC_VOLTAGE_CONFIG

Wiring

  • The FC image is from an older revision and doesn't have VBAT, RSSI and Current pins visible
  • The Rctimer Voltage & Current Sensor
    • Isn't big enough to work as a PDB, a separate PDB was used
    • Has a voltage divider that needs to be bypassed
  • Corona R4FA-SB provides RSSI as PWM signal but Betaflight 2.8.1 lacks the ability to read the signal if SBUS is enabled, a LC filter connected to the status led was used instead
  • ESCs have been left out from the picture on purpose
  • No direct wire soldering to FC was used
rc/krieger.txt · Last modified: 02.07.2018 21:58 by vergo