HOBBYMATE Comet User manual
Hobbymate 5” Racing Drone
Assembly Instructions
Version 1.5
Meteor Comet
Initial Thoughts & Helpful Tips
•Thank you for purchasing this quality Hobbymate product
•Please read and understand all instructions, including the Appendix, before starting
assembly
•Avoid static discharges as they can damage electronic boards
•Don’t trim wires over drone circuitry, small bits of wire can short out and damage
electronics
•Use good quality solder and flux
•Adjust soldering iron to lower temperature when soldering to boards as too much heat can
loosen or damage board components
•Ground pads typically require slightly higher heat setting as they are large and dissipate heat
•Pre-tin wires that will soldered to board pads, use minimal stripped wires to avoid potential
shorts
•Use thread lock on motor and frame bolts
•Before powering drone with battery for first time or after modifying wiring, check for shorts
with a digital voltmeter and use a Smoke Stopper or similar device
•ALWAYS remove props when configuring drone or testing motors with battery connected
•Camera has a built in OSD which can be turned off using supplied camera joystick. If left on,
it may clutter screen with Betaflight OSD enabled
•Technical support is available via email hobbymatecs@hobbymatehobby.com or on the RC
Groups Technical Support thread
Assemble Frame - Comet
Use M3*30 for 3 pcs stack
ESC, FC, VTX
Assemble Frame - Meteor
Flight Control Board –Flash Firmware
•Hold Bind button on flight controller while plugging in USB to computer
•Open Betaflight, see DFU
•If problems, install drivers listed on 1st page of Betaflight
•Press Firmware Flasher
•Load Firmware either Online or Local
•Flash latest version of OMNIBUSF4FW, be sure to use same version of
Betaflight Configuration File (see next page)
•Flight controller will reboot
Bind button
Omnibus F4 V6
Flight Control Board –Apply Configuration
•Plug in USB to computer
•Open Betaflight, connect to Comm Port
•If problems, install drivers listed on 1st page
•Click CLI on left side
•Note: there are 4 Configuration file options:
–XM+ or R-XSR receiver, each with either “back” ESC battery terminal
orientation or “left side”.
–For DSM and Flysky receivers, apply XM+ configuration file and make
changes noted in Appendix on DSM and Flysky specific pages.
•Open Configuration text file using text editor, copy all text
•Right click into Betaflight CLI “write your command here”
box
•Paste text file contents (you will only see last line of what
you pasted), press Enter
•See configuration being applied as it scrolls by above
•When finished, type SAVE, press ENTER
•Flight controller will reboot, configuration is finished
•Note: Configuration files for “back” ESC battery orientation
uses motor resource remapping.
•Note: If configuration file is not used, you must go to CLI
and type: set gyro_to_use = second, press Enter, type
SAVE, press Enter. This enables gyro and accelerometer.
See Appendix for manual configuration settings.
•Note: May be necessary to update FrSky receiver firmware
to at least: (to make RSSI display or Lua Scripts work)
XM+: XM+xxx170313-RSSI8.frk (xxx indicates either
R-XSR: R-XSRxxx171009.frk FCC or LBT version)
Firmware Flashing Tutorial
Install Motors and ESC Board
•Comet Spacing: Hex nut, ESC board, fiberglass spacer that comes in ESC package, 6mm spacer, O-ring
•Meteor Spacing: 8mm bottom spacer, ESC board, fiberglass spacer that comes in ESC package, 6mm
spacer, O-ring
•Install 4in1 ESC with battery terminals exiting rear of drone, apply foil
•Solder battery lead
•Install motors with supplied screws
•Solder motor wires to closest ESC pads (motor locations will be remapped in Betaflight with the
configuration file)
•Install 8 pin cable
Flight Control Board –Wiring Diagram
FrSky
XM+
FrSky
R-XSR
Omnibus F4 V6
DSM
+3.3v
Sig
Flysky
Install Flight Controller with connections
•Comet Spacing: FC, O-ring, 6mm spacer with threaded end
•Meteor Spacing: FC, O-ring, 8mm spacer with threaded end
•Solder receiver, VTX, Camera per wiring diagram
•Connect 8 pin cable to FC
•Foam tape receiver to bottom of VTX or other easily accessible location
Ensure insulation is pulled over any exposed wire
on unused VTX 5v output and extra GND wires
FC orientation with USB
on right side of drone
Front of
Drone
Install VTX, Camera, Antenna
•Install VTX using hex nuts
•Install Camera using supplied screws
•Install MMCX cable and antenna
•Connect VTX, camera and MMCX cable to VTX
•Attach top frame with supplied screws
This manual suits for next models
1
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