How Did Paige Break Her Arm Again

This tutorial shows y'all how to troubleshoot and fix a quadcopter that doesn't arm. I will likewise explain the common problems that forestall a mini quad from arming with Betaflight.

If y'all are completely new to Betaflight, check out my tutorials on how to setup it up for the first time.

The commencement things to cheque

Hither are the beginning things y'all want to check when you are having trouble arming your quad:

• Radio receiver is bound and working correctly in Betaflight. Bank check in the receiver tab if the channels are responding to sticks motility in the right order and direction (download the latest betaflight configurator)

• Bank check if you have assigned a switch on your radio for ARM mode, and if it can be activated by that switch. The arm way should turn yellow when activated, indicating that the switch is working
• As a safety feature in Betaflight, the motors won't spin upwardly even when you lot arm it if the flight controller is connected to the configurator. Remove USB connection and attempt again

If everything is good simply you still tin can't arm the quad, and so we will have to look a flake deeper.

How to check for arming issue in Betaflight?

If you take Betaflight OSD, make certain you display "Warnings" on your screen, and that "Arming Disabled" is selected. This will let yous know what is stopping arming.

If you lot don't have Betaflight OSD, you can also cheque for the "Arming Disable Flag" in Betaflight. This will betoken the bug that are preventing yous from arming.

There are multiple ways of checking for "Arming Disable Flag":

• Betaflight Configurator
• CLI
• Cablegram Beeping

Betaflight Configurator

If y'all have access to a computer, you tin can hands cheque the Arming Disable Flag in the Setup Tab in the Betaflight configurator.

CLI

Alternatively, yous can check in the CLI by entering the control "status". The last line of the status info is arming prevention flags list. This feature was made bachelor after Betaflight 3.2.

Further Reading: How to utilize CLI in Betaflight?

Buzzer Beeping

If you don't have access to a computer, but you practice have a buzzer in your quad, the beeping should also indicate the reasons for the disabled arming. The beeping blueprint tin can exist broken downwardly into:

• 5 curt beeps for attention, which can be ignored
• a number of long beeps
• a number of brusk beeps with long intervals

Each long beep represents 5, while each short beep represents one. The final flag number tin be calculated as 5 x <the number of long beeps> + <the number of short beeps>.

For example:

• 0 long beep and 2 curt beeps = 2
• 1 long beep and iii short beeps = 8
• 2 long beeps + 0 short beeps = 10

Arming prevention flags lookup table

Once y'all have plant the arming disable flag numbers or names, you can expect information technology up in the table below to see what they actually mean. The tabular array was taken from the Betaflight wiki folio for our readers' convenience.

Proper noun	Clarification	Beep lawmaking						Required Deportment
		3.two	three.3	3.4/3.5	iv.0	iv.1	iv.ii+
NOGYRO	A gyro was non detected	1	one	1	1	1	i	You may accept a hardware failure, if a previous firmware version works then information technology may be a firmware issue.
FAILSAFE	Failsafe is agile	two	two	2	two	ii	2	Rectify the failure condition and endeavor again.
RXLOSS (1)	No valid receiver signal is detected	three	three	iii	3	three	3	Your receiver is either faulty or has no link to the transmitter.
BADRX (1)	Your receiver has just recovered from receiver failsafe but the arm switch is on	4	4	4	4	four	4	Switch the arm switch off.
BOXFAILSAFE	The 'FAILSAFE' switch was activated	v	five	v	v	five	5	Run acrossFAILSAFE
Delinquent	Runway Takeoff Prevention has been triggered		half dozen	6	6	6	6	Disarm to clear this condition.
CRASH	Crash Recovery has been triggered					vii	seven	Disarm to articulate this condition.
THROTTLE	Throttle aqueduct is likewise high	6	7	seven	7	8	viii	Lower throttle belowmin_check.
Bending	Arts and crafts is non level (plenty)	vii	8	8	8	9	ix	Level craft to withinsmall_angle degrees (default 25).
BOOTGRACE	Arming too soon after power on	eight	ix	nine	10	ten	ten	Wait untilpwr_on_arm_grace seconds (default 5) have elapsed.
NOPREARM	Prearm switch is non activated or prearm has not been toggled later on disarm	ix	10	ten	10	11	xi	Toggle the prearm switch.
LOAD	System load is too high for safe flight	x	xi	11	11	12	12	Revisit configuration and disable features.
CALIB	Sensor calibration is however ongoing	11	12	12	12	13	xiii	Wait for sensor scale to complete.
CLI	CLI is active	12	13	xiii	13	fourteen	14	Exit the CLI.
CMS	CMS (config menu) is Agile – over OSD or other display	13	14	14	14	15	15	Leave the CMS (or OSD menu).
OSD	OSD menu is active	fourteen	15	16				Leave OSD menu.
BST	A Black Sheep Telemetry device (TBS Core Pro for example) disarmed and is preventing arming	xv	xvi	16	xv	16	xvi	Refer to the manual for your hardware.
MSP	MSP connection is active, probably via Betaflight Configurator	16	17	17	16	17	17	Terminate the Betaflight Configurator connection (disconnect).
PARALYZE	Paralyze way has been activated			18	17	xviii	18	Power bike/reset FC board.
GPS	GPS rescue mode is configured merely required number of satellites has non been fixed			19	18	19	nineteen	Wait for GPS set up or disable GPS rescue manner.
RESCUE_SW	GPS Rescue switch is in an unsafe position				19	20	20	Plough off the GPS Rescue switch to arm.
RPMFILTER (2)	Motor RPM-based filtering is not functioning				21	21	21	One or more than ESC'southward are not supplying valid RPM telemetry.
REBOOT_REQD	Reboot required					22	22	Reboot the flight controller for settings changes to take event.
DSHOT_BBANG	DSHOT Bitbang is not working					23	23	(3)
ACC_CALIB	Accelerometer calibration required						24	Calibrate the accelerometer or disable features that apply it
ARMSWITCH	Arm switch is in an dangerous position	17	xviii	20	21	24	25	Toggle the arm switch to arm.

Other common problems that stop the quad from arming

If you don't go any arming disabled flag in Betaflight, and so the trouble might be something else. Endeavor to get through the following cheque listing.

Accelerometer Related

Maybe your mini quad is non on a level plenty surface, or the ACC (accelerometer) is not calibrated. Calibrate ACC on a level surface first, if still no luck, try increasing "small_angle degrees" in CLI (default is 25).

Or but disable ACC if you lot don't fly Angle mode.

CPU Usage Too Loftier?

When CPU load is too loftier, the flying controller will simply pass up to arm. Try to stay below 50% past lowering looptime, and disabling unnecessary features.

Throttle Related

Check if the everyman value in your throttle channel is too high, make sure the throttle stick is at its lowest position when attempting to arm. Ideally every channel including throttle should have endpoints of 1000 and 2000. If they are not and then you might want to calibrate your radio endpoints first.

Betaflight doesn't arm if your minimum throttle is besides high (higher than the setting "Min_Check"). This is a rubber feature so that the quad doesn't suddenly spin upward the motors and hurt you when it's armed. You must ensure that your throttle is lower than min_check when it's in the lowest stick position. Min_check is set up to 1050 by default, double check if it's not been changed by error.

Moron threshold

Some FC might have more sensitive gyro's and the quad would refuse to initialize afterwards power up, and therefore you tin't arm it. Past increase Moron Threshold in CLI can reduce gyro sensitivity during initialization. Try setting it to 100 or even 120.

Conclusion

I hope that was helpful! Allow me know in the annotate if you had problem with arming that was caused by something else that wasn't covered in this tutorial. If you are even so having problems arming your quad later following this guide, please post your question on our forum, I am more than than happy to help.

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Source: https://oscarliang.com/quad-arming-issue-fix/

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