Skip to content
stronnag edited this page Sep 2, 2016 · 1 revision

#Why does my Flight Controller blink/beep lots of times when powering up ?

Stolen (only call it research) wholesale from the betaflight wiki ....

5 short blink/beeps followed by any number of long blinks/beeps indicates an error code. Number of long blinks indicates the following error:

  1. FAILURE_DEVELOPER: External interrupt of sensor failed to initialize.
  2. FAILURE_MISSING_ACC: Accelerometer/gyro sensor is missing
  3. FAILURE_ACC_INIT: Accelerometer/gyro sensor failed to initialize
  4. FAILURE_ACC_INCOMPATIBLE: The found accelerometer/gyro sensor is not compatible/not the expected one
  5. FAILURE_INVALID_EEPROM_CONTENTS: EEPROM/FLASH configuration content is invalid
  6. FAILURE_FLASH_WRITE_FAILED: Write of configuration to EEPROM/FLASH failed
  7. FAILURE_GYRO_INIT_FAILED: Gyro initialization of SPI MPU6000 accelerometer/gyro failed

The most common one seem to be error 2 where the accelerometer/gyro sensor can't be found, this is caused by a bad sensor or bad connections to the sensor, could happen because of a bad crash. On most boards gyro and accelerometer is the same chip so acro flying isn't possible when the accelerometer isn't found, it's not just the accelerometer that's bad but the whole chip.

Error 3, 4 and 7 could also be caused by a bad accelerometer/gyro sensor. Error 5 and 6 indicates memory read/write problem of the MCU (main processor). In most cases a new flight controller board will be needed if the user isn't for example able to re-solder the sensor.

Above are Hard Faults the Processor detects upon boot-up and initialization. Additional reasons for flashing LED and/or beeping are:
No signal from RX. This could be simply the TX is off or the wrong Model/binding selected or a hard fault of the RX like no power or bad cable.
Accelerometer Not calibrated if the ACC is enabled (check the CLI). If acc is enabled then it must be cal'ed once and typically done in the config GUI.
Copter titled too far if the Acc is enabled.

WIKI TOPICS

Wiki Home Page

INAV Version Release Notes

7.1.0 Release Notes
7.0.0 Release Notes
6.0.0 Release Notes
5.1 Release notes
5.0.0 Release Notes
4.1.0 Release Notes
4.0.0 Release Notes
3.0.0 Release Notes
2.6.0 Release Notes
2.5.1 Release notes
2.5.0 Release Notes
2.4.0 Release Notes
2.3.0 Release Notes
2.2.1 Release Notes
2.2.0 Release Notes
2.1.0 Release Notes
2.0.0 Release Notes
1.9.1 Release notes
1.9.0 Release notes
1.8.0 Release notes
1.7.3 Release notes
Older Release Notes

QUICK START GUIDES

Getting started with iNav
Fixed Wing Guide
Howto: CC3D flight controller, minimOSD , telemetry and GPS for fixed wing
Howto: CC3D flight controller, minimOSD, GPS and LTM telemetry for fixed wing
INAV for BetaFlight users
launch mode
Multirotor guide
YouTube video guides
DevDocs Getting Started.md
DevDocs INAV_Fixed_Wing_Setup_Guide.pdf
DevDocs Safety.md

Connecting to INAV

Bluetooth setup to configure your flight controller
DevDocs Wireless Connections (BLE, TCP and UDP).md\

Flashing and Upgrading

Boards, Targets and PWM allocations
Upgrading from an older version of INAV to the current version
DevDocs Installation.md
DevDocs USB Flashing.md

Setup Tab
Live 3D Graphic & Pre-Arming Checks

Calibration Tab
Accelerometer, Compass, & Optic Flow Calibration

Alignment Tool Tab
Adjust mount angle of FC & Compass

Ports Tab
Map Devices to UART Serial Ports

Receiver Tab
Set protocol and channel mapping

Mixer

Mixer Tab
Custom mixes for exotic setups
DevDocs Mixer.md

Outputs

DevDocs ESC and servo outputs.md
DevDocs Servo.md

Modes

Modes
Navigation modes
Navigation Mode: Return to Home
DevDocs Controls.md
DevDocs INAV_Modes.pdf
DevDocs Navigation.md

Configuration

Sensor auto detect and hardware failure detection

Failsafe

Failsafe
DevDocs Failsafe.md

PID Tuning

PID Attenuation and scaling
Fixed Wing Tuning for INAV 3.0
Tune INAV PIFF controller for fixedwing
DevDocs Autotune - fixedwing.md
DevDocs INAV PID Controller.md
DevDocs INAV_Wing_Tuning_Masterclass.pdf
DevDocs PID tuning.md
DevDocs Profiles.md

GPS

GPS and Compass setup
GPS Failsafe and Glitch Protection

OSD and VTx

DevDocs Betaflight 4.3 compatible OSD.md
OSD custom messages
OSD Hud and ESP32 radars
DevDocs OSD.md
DevDocs VTx.md

LED Strip

DevDocs LedStrip.md

ADVANCED

Advanced Tuning

Fixed Wing Autolaunch
DevDocs INAV_Autolaunch.pdf

Programming

DevDocs Programming Framework.md

Adjustments

DevDocs Inflight Adjustments.md

Mission Control

iNavFlight Missions
DevDocs Safehomes.md

Tethered Logging

Log when FC is connected via USB

Blackbox

DevDocs Blackbox.md
INAV blackbox variables
DevDocs USB_Mass_Storage_(MSC)_mode.md

CLI

iNav CLI variables
DevDocs Cli.md
DevDocs Settings.md

VTOL

DevDocs MixerProfile.md
DevDocs VTOL.md

TROUBLESHOOTING

"Something" is disabled Reasons
Blinkenlights
Pixel OSD FAQs
TROUBLESHOOTING
Why do I have limited servo throw in my airplane

ADTL TOPICS, FEATURES, DEV INFO

AAT Automatic Antenna Tracker
Building custom firmware
Default values for different type of aircrafts
Features safe to add and remove to fit your needs.
Developer info
INAV MSP frames changelog
INAV Remote Management, Control and Telemetry
Lightweight Telemetry (LTM)
Making a new Virtualbox to make your own INAV
MSP Navigation Messages
MSP V2
OrangeRX LRS RX and OMNIBUS F4
Rate Dynamics
Target and Sensor support
UAV Interconnect Bus
Ublox 3.01 firmware and Galileo
DevDocs 1wire.md
DevDocs ADSB.md
DevDocs Battery.md
DevDocs Buzzer.md
DevDocs Channel forwarding.md
DevDocs Display.md
DevDocs Fixed Wing Landing.md
DevDocs GPS_fix_estimation.md
DevDocs LED pin PWM.md
DevDocs Lights.md
DevDocs OSD Joystick.md
DevDocs Servo Gimbal.md
DevDocs Temperature sensors.md

OLD LEGACY INFO

Supported boards
DevDocs Boards.md
Legacy Mixers
Legacy target ChebuzzF3
Legacy target Colibri RACE
Legacy target Motolab
Legacy target Omnibus F3
Legacy target Paris Air Hero 32
Legacy target Paris Air Hero 32 F3
Legacy target Sparky
Legacy target SPRacingF3
Legacy target SPRacingF3EVO
Legacy target SPRacingF3EVO_1SS
DevDocs Configuration.md
Request form new PRESET
DevDocs Introduction.md
Welcome to INAV, useful links and products
iNav Telemetry
DevDocs Rangefinder.md
DevDocs Rssi.md
DevDocs Runcam device.md
DevDocs Serial.md
DevDocs Telemetry.md
DevDocs Rx.md
DevDocs Spektrum bind.md

Clone this wiki locally