Q: DFU does not appear in the port list when flashing.
A: Try disconnecting the FC, press and HOLD the boot button. Connect the USB cable. Release BOOT, retry flash-
ing.
Q: I have no LEDs on at all.
A: Check 5v supply. (Battery Charged?, USB cable damaged?)
Q: The status LED never lights or is always on.
A: Follow recovery procedure in the configurator. Likely caused by flashing wrong firmware. Could also be
caused by stuck-down BOOT switch - check button for dirt, etc.
Q: Unable to connect and a repeating light sequence occurs on the activity LED.
A: Check the Cleanflight manual for how to interpret the error code (count the long flashes).
Q: Unable to connect to the board (and status LED shows non-repeating pattern at boot-up).
A: Close all Chrome browsers and Chome apps, retry. COM Port drivers not installed? Try connecting via differ-
ent UART OR Reset the board to defaults using buttons OR reflash firmware using ‘full chip erase’. (Likely caused
by mis-configuration of ports).
Q: Transponder code not recognised by receiver.
A: Check transponder enable bridge. Check IR LED orientation and light beam exit path. Ensure transponder
feature enabled in software. Ensure transponder code correctly configured.
Q: The COM port does not show up after flashing firmware.
A: Wrong firmware was flashed; Use SPRacingF7DUAL target and follow recovery steps in the Cleanflight Config-
urator firmware flasher to restore the firmware.
Q: The receiver tab does not show any activity.
A: Check configuration tab - receiver mode. Center sticks, configure endpoints and trim on transmitter. Check
ports tab if using Serial RX. Check wiring.
Q: You have a problem not listed here.
A: Reset and/or upgrade the firmware, try again, report issues via the forums - links are in the configurator on
the ‘Documentation & Support’ tab. Before contacting your retailer reflash with latest CLEANFLIGHT and double
check - perhaps the firmware you are using is old or incorrect?
Q: Only 5V LED lights up, No BLUE 3V LED or RED STATUS LED.
A: Most common cause is misconnection or short of VBAT pins - FC will be destroyed! Check for short in Spek-
trum Satellite cable if using Spektrum Satellite RX. Always caused by destroyed CPU or overloaded/shorted
voltage regulator.
Mounting
The SPRacingF7DUAL and Stacking VTX board are supplied with grommets. Install the grommets in each corner
of each board. Then use appropriate spacers between your frame and between each board.
When using the Stacking VTX board ensure the gap between the FC and the Stacking VTX board is the same on
all sides and that all stacking connectors are properly mated and connected.
Ensure that all wires soldered to the FC do
NOT
touch the bottom of the Stacking VTX board.
Use appropriate
guage cable and solder neatly!
Especially for the Battery and ESC power cables.
The SP Racing F7 DUAL has a directional arrow on it indicating the front of the board. The USB socket should be
on the RIGHT when the quad is facing FORWARDS.
SPRacingF7DUAL
http://seriouslypro.com - http://cleanflight.com
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