This tutorial reveals you troubleshoot and repair a quadcopter that doesn’t arm. I may also clarify the widespread issues that forestall a mini quad from arming with Betaflight.
In case you are utterly new to Betaflight, take a look at my tutorials on setup it up for the primary time.
Listed below are the primary belongings you need to test if you end up having bother arming your quad:
- Radio receiver is sure and dealing accurately in Betaflight. Examine within the receiver tab if the channels are responding to sticks motion within the appropriate order and course (obtain the newest betaflight configurator)
- Examine you probably have assigned a change in your radio for ARM mode, and if it may be activated by that change. The arm mode ought to flip yellow when activated, indicating that the change is working
- As a security function in Betaflight, the motors received’t spin up even once you arm it if the flight controller is related to the configurator. Take away USB connection and take a look at once more
If all the pieces is nice however you continue to can’t arm the quad, then we should look a bit deeper.
When you have Betaflight OSD, be sure to show “Warnings” in your display screen, and that “Arming Disabled” is chosen. It will let you recognize what’s stopping arming.
Should you don’t have Betaflight OSD, you too can test for the “Arming Disable Flag” in Betaflight. It will point out the problems which are stopping you from arming.
There are a number of methods of checking for “Arming Disable Flag”:
- Betaflight Configurator
- CLI
- Buzzer Beeping
Betaflight Configurator
When you have entry to a pc, you’ll be able to simply test the Arming Disable Flag within the Setup Tab within the Betaflight configurator.
CLI
Alternatively, you’ll be able to test within the CLI by getting into the command “standing”. The final line of the standing information is arming prevention flags record. This function was made obtainable after Betaflight 3.2.
Additional Studying: The best way to use CLI in Betaflight?
Buzzer Beeping
Should you don’t have entry to a pc, however you do have a buzzer in your quad, the beeping also needs to point out the explanations for the disabled arming. The beeping sample may be damaged down into:
- 5 brief beeps for consideration, which may be ignored
- quite a few lengthy beeps
- quite a few brief beeps with lengthy intervals
Every lengthy beep represents 5, whereas every brief beep represents 1. The ultimate flag quantity may be calculated as 5 x <the variety of lengthy beeps> + <the variety of brief beeps>.
For instance:
- 0 lengthy beep and a couple of brief beeps = 2
- 1 lengthy beep and three brief beeps = 8
- 2 lengthy beeps + 0 brief beeps = 10
After you have discovered the arming disable flag numbers or names, you’ll be able to look it up within the desk under to see what they really imply. The desk was taken from the Betaflight wiki web page for our readers’ comfort.
| Title | Description | Beep code | Required Actions | |||||
|---|---|---|---|---|---|---|---|---|
| 3.2 | 3.3 | 3.4/3.5 | 4.0 | 4.1 | 4.2+ | |||
NOGYRO |
A gyro was not detected | 1 | 1 | 1 | 1 | 1 | 1 | You’ll have a {hardware} failure, if a earlier firmware model works then it could be a firmware difficulty. |
FAILSAFE |
Failsafe is energetic | 2 | 2 | 2 | 2 | 2 | 2 | Rectify the failure situation and take a look at once more. |
RXLOSS(1) |
No legitimate receiver sign is detected | 3 | 3 | 3 | 3 | 3 | 3 | Your receiver is both defective or has no hyperlink to the transmitter. |
BADRX(1) |
Your receiver has simply recovered from receiver failsafe however the arm change is on | 4 | 4 | 4 | 4 | 4 | 4 | Change the arm change off. |
BOXFAILSAFE |
The ‘FAILSAFE’ change was activated | 5 | 5 | 5 | 5 | 5 | 5 | See FAILSAFE |
RUNAWAY |
Runway Takeoff Prevention has been triggered | 6 | 6 | 6 | 6 | 6 | Disarm to clear this situation. | |
CRASH |
Crash Restoration has been triggered | 7 | 7 | Disarm to clear this situation. | ||||
THROTTLE |
Throttle channel is simply too excessive | 6 | 7 | 7 | 7 | 8 | 8 | Decrease throttle under min_check. |
ANGLE |
Craft is just not stage (sufficient) | 7 | 8 | 8 | 8 | 9 | 9 | Degree craft to inside small_angle levels (default 25). |
BOOTGRACE |
Arming too quickly after energy on | 8 | 9 | 9 | 10 | 10 | 10 | Wait till pwr_on_arm_grace seconds (default 5) have elapsed. |
NOPREARM |
Prearm change is just not activated or prearm has not been toggled after disarm | 9 | 10 | 10 | 10 | 11 | 11 | Toggle the prearm change. |
LOAD |
System load is simply too excessive for secure flight | 10 | 11 | 11 | 11 | 12 | 12 | Revisit configuration and disable options. |
CALIB |
Sensor calibration remains to be ongoing | 11 | 12 | 12 | 12 | 13 | 13 | Await sensor calibration to finish. |
CLI |
CLI is energetic | 12 | 13 | 13 | 13 | 14 | 14 | Exit the CLI. |
CMS |
CMS (config menu) is Lively – over OSD or different show | 13 | 14 | 14 | 14 | 15 | 15 | Exit the CMS (or OSD menu). |
OSD |
OSD menu is energetic | 14 | 15 | 16 | Exit OSD menu. | |||
BST |
A Black Sheep Telemetry machine (TBS Core Professional for instance) disarmed and is stopping arming | 15 | 16 | 16 | 15 | 16 | 16 | Consult with the handbook on your {hardware}. |
MSP |
MSP connection is energetic, most likely through Betaflight Configurator | 16 | 17 | 17 | 16 | 17 | 17 | Terminate the Betaflight Configurator connection (disconnect). |
PARALYZE |
Paralyze mode has been activated | 18 | 17 | 18 | 18 | Energy cycle/reset FC board. | ||
GPS |
GPS rescue mode is configured however required variety of satellites has not been mounted | 19 | 18 | 19 | 19 | Await GPS repair or disable GPS rescue mode. | ||
RESCUE_SW |
GPS Rescue change is in an unsafe place | 19 | 20 | 20 | Flip off the GPS Rescue change to arm. | |||
RPMFILTER(2) |
Motor RPM-based filtering is just not functioning | 21 | 21 | 21 | A number of ESC’s aren’t supplying legitimate RPM telemetry. | |||
REBOOT_REQD |
Reboot required | 22 | 22 | Reboot the flight controller for settings modifications to take impact. | ||||
DSHOT_BBANG |
DSHOT Bitbang is just not working | 23 | 23 | (3) | ||||
ACC_CALIB |
Accelerometer calibration required | 24 | Calibrate the accelerometer or disable options that use it | |||||
ARMSWITCH |
Arm change is in an unsafe place | 17 | 18 | 20 | 21 | 24 | 25 | Toggle the arm change to arm. |
Should you don’t get any arming disabled flag in Betaflight, then the issue is likely to be one thing else. Attempt to undergo the next test record.
Accelerometer Associated
Perhaps your mini quad is just not on a stage sufficient floor, or the ACC (accelerometer) is just not calibrated. Calibrate ACC on a stage floor first, if nonetheless no luck, strive rising “small_angle levels” in CLI (default is 25).
Or just disable ACC in case you don’t fly Angle mode.
CPU Utilization Too Excessive?
When CPU load is simply too excessive, the flight controller will merely refuse to arm. Attempt to keep under 50% by reducing looptime, and disabling pointless options.
Throttle Associated
Examine if the bottom worth in your throttle channel is simply too excessive, be sure that the throttle stick is at its lowest place when trying to arm. Ideally each channel together with throttle ought to have endpoints of 1000 and 2000. If they aren’t you then may need to calibrate your radio endpoints first.
Betaflight doesn’t arm in case your minimal throttle is simply too excessive (increased than the setting “Min_Check”). This can be a security function in order that the quad doesn’t out of the blue spin up the motors and harm you when it’s armed. It’s essential to be sure that your throttle is decrease than min_check when it’s within the lowest stick place. Min_check is ready to 1050 by default, double test if it’s not been modified by mistake.
Moron threshold
Some FC might need extra delicate gyro’s and the quad would refuse to initialize after energy up, and subsequently you’ll be able to’t arm it. By enhance Moron Threshold in CLI can cut back gyro sensitivity throughout initialization. Strive setting it to 100 and even 120.
I hope that was useful! Let me know within the remark in case you had drawback with arming that was attributable to one thing else that wasn’t lined on this tutorial. In case you are nonetheless having issues arming your quad after following this information, please publish your query on our discussion board, I’m more than pleased to assist.