# Flight Controllers **URL:** https://discuss.bluerobotics.com/c/blue-robotics-products/flight-controllers/87.md [Latest](https://discuss.bluerobotics.com/latest.md) · [Categories](https://discuss.bluerobotics.com/categories.md) · [Tags](https://discuss.bluerobotics.com/tags.md) --- ## [Navigator - PNP Sensor](https://discuss.bluerobotics.com/t/navigator-pnp-sensor/23644)
**Author:** [@sgrtmosina](https://discuss.bluerobotics.com/u/sgrtmosina)\ **Replies:** 1\ **Last updated:** [September 25, 2026, 7:31pm UTC](https://discuss.bluerobotics.com/t/navigator-pnp-sensor/23644 "2026-09-25T19:31:22Z")
Hello, I would like to connect PNP sensors to the Navigator in the BlueBoat. Ultimately, I would like a message / light to appear on the cockpit when the sensor sends a signal. Has anyone done something similar and ca… --- ## [Thruster commander 5v pin](https://discuss.bluerobotics.com/t/thruster-commander-5v-pin/23544)
**Author:** [@catdog](https://discuss.bluerobotics.com/u/catdog)\ **Replies:** 1\ **Last updated:** [September 2, 2026, 4:02pm UTC](https://discuss.bluerobotics.com/t/thruster-commander-5v-pin/23544 "2026-09-02T16:02:37Z")
what is the 5v pin next to the switch pins for? ghank you --- ## [ICM-20602. Classified as Not Recommended for New Designs](https://discuss.bluerobotics.com/t/icm-20602-classified-as-not-recommended-for-new-designs/23465)
**Author:** [@RogerA](https://discuss.bluerobotics.com/u/RogerA)\ **Replies:** 1\ **Last updated:** [August 15, 2026, 4:18am UTC](https://discuss.bluerobotics.com/t/icm-20602-classified-as-not-recommended-for-new-designs/23465 "2026-08-15T04:18:38Z")
I am currently building the Navigator using a Raspberry Pi Compute Module 4 (CM4). While going through the BOM, I noticed that the ICM-20602 IMU is classified as NRND (Not Recommended for New Designs) by the manufacture… --- ## [0-100% Duty cycle PWM](https://discuss.bluerobotics.com/t/0-100-duty-cycle-pwm/22104)
**Author:** [@k-deboer](https://discuss.bluerobotics.com/u/k-deboer)\ **Replies:** 7\ **Last updated:** [August 11, 2026, 2:29am UTC](https://discuss.bluerobotics.com/t/0-100-duty-cycle-pwm/22104 "2026-08-11T02:29:51Z")
I’ve started a small project to add some external LED lighting. It’s based on these LED drivers: NLDD-H-LED Driver Power Supply Solution - MEAN WELL The LEDs draw 50 Watts at full power, so it would be great if the dimm… --- ## [Raspberry Pi 5 Trouble with Navigator](https://discuss.bluerobotics.com/t/raspberry-pi-5-trouble-with-navigator/23434)
**Author:** [@ryghoul](https://discuss.bluerobotics.com/u/ryghoul)\ **Replies:** 7\ **Last updated:** [August 7, 2026, 3:10pm UTC](https://discuss.bluerobotics.com/t/raspberry-pi-5-trouble-with-navigator/23434 "2026-08-07T15:10:32Z")
Hi everyone! Im running into some issues using my Blue Navigator with my Raspberry Pi 5. Recently made the upgrade after our Pi 4b got fried from a battery malfunction. The Navigator being plugged into the Pi5 seemed com… --- ## [Navigator - Powering servo rail](https://discuss.bluerobotics.com/t/navigator-powering-servo-rail/16857)
**Author:** [@Loick](https://discuss.bluerobotics.com/u/Loick)\ **Replies:** 9\ **Last updated:** [July 22, 2026, 10:39pm UTC](https://discuss.bluerobotics.com/t/navigator-powering-servo-rail/16857 "2026-07-22T22:39:12Z")
Hello Blue Robotics community ! I have a question about powering the servo rail of the Navigator board with 5V. For a bit of context, I am working with Blueboats for my robotics research and I will have, at some point,… --- ## [Using Navigator with RPi CM4 + Waveshare Carrier Board](https://discuss.bluerobotics.com/t/using-navigator-with-rpi-cm4-waveshare-carrier-board/23155)
**Author:** [@adarsh\_05](https://discuss.bluerobotics.com/u/adarsh_05)\ **Replies:** 8\ **Last updated:** [June 19, 2026, 1:19pm UTC](https://discuss.bluerobotics.com/t/using-navigator-with-rpi-cm4-waveshare-carrier-board/23155 "2026-06-19T13:19:09Z")
Hi Team, I am facing an issue where the Navigator board is not being detected in BlueOS. Hardware Setup Raspberry Pi Compute Module 4 (Rev 1.1) Waveshare CM4 carrier/base board Blue Robotics Navigator connected direct… --- ## [Pi 5 with Navigator](https://discuss.bluerobotics.com/t/pi-5-with-navigator/15903)
**Author:** [@Angus.F](https://discuss.bluerobotics.com/u/Angus.F)\ **Replies:** 38\ **Last updated:** [June 16, 2026, 3:18pm UTC](https://discuss.bluerobotics.com/t/pi-5-with-navigator/15903 "2026-06-16T15:18:47Z")
Hello, I was wondering if anyone has used a Raspberry Pi 5 with the navigator. If so, does everything, including the heat sink, fit properly, and are there any issues I should be aware of? Thanks. --- ## [Does Navigator board use SPI?](https://discuss.bluerobotics.com/t/does-navigator-board-use-spi/23085)
**Author:** [@coanderson](https://discuss.bluerobotics.com/u/coanderson)\ **Replies:** 3\ **Last updated:** [June 8, 2026, 6:08pm UTC](https://discuss.bluerobotics.com/t/does-navigator-board-use-spi/23085 "2026-06-08T18:08:54Z")
Hi there, I’m guessing that the navigator board is using all of the RPI pins, but I wasn’t sure about SPI pins because the navigator only has UART/I2C connectors exposed. I would like to know because I want to use this … --- ## [T200 acting out when arming](https://discuss.bluerobotics.com/t/t200-acting-out-when-arming/22878)
**Author:** [@Erlingns95](https://discuss.bluerobotics.com/u/Erlingns95)\ **Replies:** 25\ **Last updated:** [May 5, 2026, 5:07pm UTC](https://discuss.bluerobotics.com/t/t200-acting-out-when-arming/22878 "2026-05-05T17:07:04Z")
Hey again! We are experiencing some unfathomable hiccups on our ROV. Two of our 5 x T200’s are going crazy when we arm the vehicle. We have tried what seems close to us, meaning: Nothing wrong with joystick nor sticks … --- ## [Pixhawk set-up for relays, gripper and and lights](https://discuss.bluerobotics.com/t/pixhawk-set-up-for-relays-gripper-and-and-lights/13247)
**Author:** [@SDI](https://discuss.bluerobotics.com/u/SDI)\ **Replies:** 12\ **Last updated:** [April 7, 2026, 5:09pm UTC](https://discuss.bluerobotics.com/t/pixhawk-set-up-for-relays-gripper-and-and-lights/13247 "2026-04-07T17:09:24Z")
Is it possible to control 2 light channels, 1 camera servo, gripper and one Relay with the pixhawk? If so, how should the set-up be done? --- ## [Trouble Integrating simpleRTK3B Compass with BlueBoat](https://discuss.bluerobotics.com/t/trouble-integrating-simplertk3b-compass-with-blueboat/20677)
**Author:** [@andycyl](https://discuss.bluerobotics.com/u/andycyl)\ **Replies:** 10\ **Last updated:** [March 23, 2026, 5:17pm UTC](https://discuss.bluerobotics.com/t/trouble-integrating-simplertk3b-compass-with-blueboat/20677 "2026-03-23T17:17:01Z")
Hi all, I’m working on integrating the simpleRTK3B with compass into the BlueBoat platform. The reason for this is that I believe compass calibration is nearly impossible after adding extra hardware (sensor platform, et… --- ## [Pixhawk powermodule on navigator flight controller](https://discuss.bluerobotics.com/t/pixhawk-powermodule-on-navigator-flight-controller/22502)
**Author:** [@Marcel1](https://discuss.bluerobotics.com/u/Marcel1)\ **Replies:** 1\ **Last updated:** [February 23, 2026, 5:56pm UTC](https://discuss.bluerobotics.com/t/pixhawk-powermodule-on-navigator-flight-controller/22502 "2026-02-23T17:56:12Z")
Hello, I have several power modules from the Pixhawk 2.4.8. Can I also use this power module for the Navigator flight controller? If so, to which values should the following parameters be set? BATT\_MONITOR BATT\_VO… --- ## [Odd signal on the Navigator's serial port](https://discuss.bluerobotics.com/t/odd-signal-on-the-navigators-serial-port/22387)
**Author:** [@schashni](https://discuss.bluerobotics.com/u/schashni)\ **Replies:** 3\ **Last updated:** [February 4, 2026, 7:04pm UTC](https://discuss.bluerobotics.com/t/odd-signal-on-the-navigators-serial-port/22387 "2026-02-04T19:04:38Z")
Hello everyone We are developing AUV based on BlueOS (Raspberry Pi 4B with Navigator board). There is a simple sonar on the AUV that uses UART TTL for communication. We connected the sonar to serial port 1 from Navigat… --- ## [Uppgrade from Pixhawk to Navgator](https://discuss.bluerobotics.com/t/uppgrade-from-pixhawk-to-navgator/21944)
**Author:** [@Bovikarby](https://discuss.bluerobotics.com/u/Bovikarby)\ **Replies:** 1\ **Last updated:** [November 8, 2025, 12:04pm UTC](https://discuss.bluerobotics.com/t/uppgrade-from-pixhawk-to-navgator/21944 "2025-11-08T12:04:07Z")
Hi Forum With my BR2, I from time to time have problems with the compass. Is the The Navigator fligth controller and Rasperry Pi4 performing better than the old Pixhawk. Any user that have any experiense in uppgrade fr… --- ## [Navigator C++ library](https://discuss.bluerobotics.com/t/navigator-c-library/21850)
**Author:** [@BerkY](https://discuss.bluerobotics.com/u/BerkY)\ **Replies:** 3\ **Last updated:** [October 18, 2025, 12:38am UTC](https://discuss.bluerobotics.com/t/navigator-c-library/21850 "2025-10-18T00:38:19Z")
Hello, I am trying to use the Blue Robotics Navigator FC on a raspberry pi4 with Ubuntu 22.04 server installed. I am trying to integrate the FC library with ROS2 using C++. I have followed the README provided for the CM… --- ## [Relays on Navigator](https://discuss.bluerobotics.com/t/relays-on-navigator/15823)
**Author:** [@FairweatherIT](https://discuss.bluerobotics.com/u/FairweatherIT)\ **Replies:** 16\ **Last updated:** [October 9, 2025, 7:55am UTC](https://discuss.bluerobotics.com/t/relays-on-navigator/15823 "2025-10-09T07:55:37Z")
Greetings, We are trying to add some auxiliary functions on one of our BlueBoats. We wish to be able to turn on/off auxiliary lights and sirens via the joystick controller. I have setup relays and used external switch… --- ## [Flight Controller C++ Interfacing](https://discuss.bluerobotics.com/t/flight-controller-c-interfacing/21681)
**Author:** [@BerkY](https://discuss.bluerobotics.com/u/BerkY)\ **Replies:** 0\ **Last updated:** [September 28, 2025, 7:14pm UTC](https://discuss.bluerobotics.com/t/flight-controller-c-interfacing/21681 "2025-09-28T19:14:29Z")
Hello, We are looking to use the BlueRobotics flight controller in our own UUV which will run on a raspberry pi 4 but will run ROS2 code which will not be running on BlueOS. Can we still interface with the FligthContro… --- ## [Slow to boot after "Restart Autopilot"](https://discuss.bluerobotics.com/t/slow-to-boot-after-restart-autopilot/21557)
**Author:** [@FairweatherIT](https://discuss.bluerobotics.com/u/FairweatherIT)\ **Replies:** 7\ **Last updated:** [September 17, 2025, 9:56pm UTC](https://discuss.bluerobotics.com/t/slow-to-boot-after-restart-autopilot/21557 "2025-09-17T21:56:56Z")
I am using a Navigator or with a 128 GB SD card. I am running Rover FW 4.6.2 and blueOS 1.4. I am doing a lot of testing the different serial ports that require a reboot of the Navigator for settings to take effect. T… --- ## [UART/SBUS Jumper for RC on Navigator](https://discuss.bluerobotics.com/t/uart-sbus-jumper-for-rc-on-navigator/21590)
**Author:** [@FairweatherIT](https://discuss.bluerobotics.com/u/FairweatherIT)\ **Replies:** 3\ **Last updated:** [September 15, 2025, 9:08pm UTC](https://discuss.bluerobotics.com/t/uart-sbus-jumper-for-rc-on-navigator/21590 "2025-09-15T21:08:30Z")
Greetings All, We have a HCU/RC unit (Skydroid H16) that we want to use for RC control and to get telemetry information. I have the unit hooked up and we are getting telemetry info in QGC on the HCU, but I am not getti… --- ## [Is this Pixhawk FMUv3\_REV\_D hardware design reliable for building a working board?](https://discuss.bluerobotics.com/t/is-this-pixhawk-fmuv3-rev-d-hardware-design-reliable-for-building-a-working-board/21542)
**Author:** [@nguyenkafc3103](https://discuss.bluerobotics.com/u/nguyenkafc3103)\ **Replies:** 5\ **Last updated:** [September 10, 2025, 12:52pm UTC](https://discuss.bluerobotics.com/t/is-this-pixhawk-fmuv3-rev-d-hardware-design-reliable-for-building-a-working-board/21542 "2025-09-10T12:52:19Z")
Hello everyone, I came across this GitHub repository that provides hardware design files for Pixhawk FMUv3\_REV\_D: :backhand\_index\_pointing\_right: https://github.com/Nguyen-said/Hardware/tree/master/FMUv3\_REV\_D I would… --- ## [Why is there no Serial 2?](https://discuss.bluerobotics.com/t/why-is-there-no-serial-2/21548)
**Author:** [@FairweatherIT](https://discuss.bluerobotics.com/u/FairweatherIT)\ **Replies:** 2\ **Last updated:** [September 9, 2025, 2:44pm UTC](https://discuss.bluerobotics.com/t/why-is-there-no-serial-2/21548 "2025-09-09T14:44:36Z")
Greetings, Quick question…I see the Navigator has 4 UART ports, Serial 1,3,4,5….why is there no serial 2? It is visible in the parameters, but no port on the Navigator. Just curious why 2 was skipped… --- ## [Can the the BlueRobotics Flight Controller function safely without the ADC?](https://discuss.bluerobotics.com/t/can-the-the-bluerobotics-flight-controller-function-safely-without-the-adc/21446)
**Author:** [@BerkY](https://discuss.bluerobotics.com/u/BerkY)\ **Replies:** 3\ **Last updated:** [August 25, 2025, 10:33am UTC](https://discuss.bluerobotics.com/t/can-the-the-bluerobotics-flight-controller-function-safely-without-the-adc/21446 "2025-08-25T10:33:05Z")
Hey, we were working on a custom overcurrent shutdown circuit and we were trying to use the ADC3.3V on the flight controller to measure a shunt voltage to get a current reading running through our custom PDB. Something w… --- ## [Communicating with the Flight Controller Board using Node-RED for Leak Sensor pin](https://discuss.bluerobotics.com/t/communicating-with-the-flight-controller-board-using-node-red-for-leak-sensor-pin/21307)
**Author:** [@BerkY](https://discuss.bluerobotics.com/u/BerkY)\ **Replies:** 0\ **Last updated:** [August 11, 2025, 8:49pm UTC](https://discuss.bluerobotics.com/t/communicating-with-the-flight-controller-board-using-node-red-for-leak-sensor-pin/21307 "2025-08-11T20:49:57Z")
Hello, we have a flight controller and are waiting for a new Pi4B to come in so we can use it then. We want to be able to do 3 things essentially: Read the ADC0 output for current sensing Read the leak sensor outputs S… --- ## [Serial Port Quantity](https://discuss.bluerobotics.com/t/serial-port-quantity/21221)
**Author:** [@XiangHong](https://discuss.bluerobotics.com/u/XiangHong)\ **Replies:** 1\ **Last updated:** [August 4, 2025, 9:45am UTC](https://discuss.bluerobotics.com/t/serial-port-quantity/21221 "2025-08-04T09:45:09Z")
Hi I’m currently using the Navigator Flight Controller for underwater equipment development, but the number of serial ports available on the development board is not sufficient for all of our sensors. I’d like to ask if… --- ## [IMU coordinates](https://discuss.bluerobotics.com/t/imu-coordinates/21121)
**Author:** [@MIguel](https://discuss.bluerobotics.com/u/MIguel)\ **Replies:** 1\ **Last updated:** [August 1, 2025, 12:48pm UTC](https://discuss.bluerobotics.com/t/imu-coordinates/21121 "2025-08-01T12:48:26Z")
Hello everyone, I’m using a Navigator FC with ArduSub and I’m trying to confirm the physical orientation of its ICM-20602 IMU. To determine the axes’ orientation, I rotated the board while observing the RAW\_IMU acceler… --- ## [Replace SD Card in Navigator](https://discuss.bluerobotics.com/t/replace-sd-card-in-navigator/21042)
**Author:** [@FairweatherIT](https://discuss.bluerobotics.com/u/FairweatherIT)\ **Replies:** 2\ **Last updated:** [July 25, 2025, 7:05pm UTC](https://discuss.bluerobotics.com/t/replace-sd-card-in-navigator/21042 "2025-07-25T19:05:32Z")
Greetings All, I have a BlueBoat with the original 16 GB SD installed. When I log into BlueOS it has a flashing red disk with an exclamation point flashing. When I click on it it says that 89.1% full, Free: 1.584 GB, an… --- ## [Navigator Flight Controller problem](https://discuss.bluerobotics.com/t/navigator-flight-controller-problem/20668)
**Author:** [@XiangHong](https://discuss.bluerobotics.com/u/XiangHong)\ **Replies:** 7\ **Last updated:** [June 25, 2025, 10:13am UTC](https://discuss.bluerobotics.com/t/navigator-flight-controller-problem/20668 "2025-06-25T10:13:15Z")
Hi,@tony-white Currently, I’m using the Navigator Flight Controller for underwater control. Is it possible to use the Raspberry Pi connected underneath the Navigator to write programs and control the Navigator’s outputs… --- ## [PPS connection to pi through navigator](https://discuss.bluerobotics.com/t/pps-connection-to-pi-through-navigator/19410)
**Author:** [@bja1701](https://discuss.bluerobotics.com/u/bja1701)\ **Replies:** 6\ **Last updated:** [April 29, 2025, 2:15am UTC](https://discuss.bluerobotics.com/t/pps-connection-to-pi-through-navigator/19410 "2025-04-29T02:15:42Z")
I want to time sync my pi using a PPS line from a GPS, but I cannot decipher the pcb schematics well enough to understand how/if the board breaks out the gpio pins of the raspberry pi at all. Is gpio pin 18 specifically … --- ## [Seeking Guidance for Developing MATLAB Firmware for BlueROV2 Control](https://discuss.bluerobotics.com/t/seeking-guidance-for-developing-matlab-firmware-for-bluerov2-control/19909)
**Author:** [@HoaiThanh](https://discuss.bluerobotics.com/u/HoaiThanh)\ **Replies:** 5\ **Last updated:** [March 31, 2025, 10:56pm UTC](https://discuss.bluerobotics.com/t/seeking-guidance-for-developing-matlab-firmware-for-bluerov2-control/19909 "2025-03-31T22:56:55Z")
Hello, I am currently using the Navigator board to design a new controller for the BlueROV2 (LQR) for educational and research purposes. I am planning to create firmware using MATLAB, similar to Pixhawk, and I really nee… [Next page](https://discuss.bluerobotics.com/c/blue-robotics-products/flight-controllers/87.md?page=1)