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

Edges of frame pieces should be sanded to avoid wear in wiring.
ImmersionRC transmitters aren't well suitable for this frame due to size issues.
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