I have a Pixhawk X7+ and connected a LiDAR to the I2C port. I’ve verified all parameters, and the data is coming through correctly. However, I’m still getting a pre-arm error. Same issue coming in Holybro kakute H743 Wing FC, I also checked the wiring and confirmed there’s no physical damage — everything appears to be in good condition. Can someone please help me troubleshoot this issue?
4 posts - 3 participants
The Plane/FC in question is the Heewing Ranger T1 VTOL, with the factory HEEWING F405 V2 Flight Controller. There is no SD card, but there is some internal flash memory for logs. It shipped with Clarity font active, and changing fonts in Mission Planner does not get a result. Normally I’d load the BF (betaflight) font on the SD card, and I’d be all set, but there is no SD card. Is there a way to solve this? While we’re at it, can I get a callsign.txt file on there?
Thanks.
1 post - 1 participant
Please tell me about the Hexacopter Drone Frame that will work with the Hobbywing X11 max motor.
1 post - 1 participant
I have a steam boat with an mini pix controller which is fine in manual but when put in to auto the rudder turns as to in the direction required but the throttle goes to the off position and closes off the steam to which the boat just stops. Can any be of assistance
1 post - 1 participant
Hi, @rmackay9 @rishabsingh3003 , I am using four tfluna sensors for obstacle avoidance but couldn’t able to found prx4 for forth sensor. is this a bug? or limitation?.
using pixhawk 6c mini holybro.
1 post - 1 participant
Hi Everyone,
I am facing one issue, When I install the PX4 firmware to my Pixhawk6C board then it is running fine, the moment I install Ardupilot firmware (Latest Arducopter). It shows the Config Error: Failed to update IO firmware.
I have tried all possible options but not able to solve the issue, I have tried putting the board to DFU mode and then flashing the bootloader but still the problem is same.
4 posts - 2 participants
I am building my own RC plane. I have all needed parts. I made my own wood frame.
My problem is that I can’t upload the sketch to Arduino Uno which is a cheap copy.
I use ArduinoDroid to upload by phone. It doesn’t recognize the MCU. Can anyone HELP?
2 posts - 2 participants
Hi All,
Today, I conducted multiple test on a system with the following specifications:
During multiple endurance test with a 1kg payload (AUW was around 5.7 kg) at 5 m altitude in loitre flight mode, the drone experienced a descent after 7, 12, 30 minutes of hovering respectively. A “potential thrust loss (2)” message appeared, and I observed that motors getting stopped in mid-air. I couldn’t determine the issue from the log.Log
1 post - 1 participant
Hi all,
I’m building a solar VTOL plane (Heewing T1 Ranger VTOL) and aiming for multi-day autonomous flight. The idea is to fly in loops between multiple coordinates. When the battery runs low, the plane should land in a predefined field, wait to recharge, and then resume flight.
My current plan is to use a companion computer (e.g., Raspberry Pi) to:
I don’t want to fly a fixed AUTO mission with a squeezed landing interruption. Instead, the CC should dynamically decide where to go next.
I’m an engineering student with strong FPV and Python experience, but I’m a bit overwhelmed by ArduPilot’s large software ecosystem.
Happy about any advice!
(P.S. This is heavily inspired by rctestflight’s videos 
)
1 post - 1 participant
I’ve witnessed some weird behavior when a plane in in Auto at a relatively low set airspeed. The vehicle would cut in towards the center of a loiter mission item. I am curious how arduplane handles a situation like the following:
A plane is doing a large loiter mission item at a set speed of 14 m/s. On one side of the loiter, winds aloft are greater than 14m/s and the plane’s ground speed is 0 or even negative. Does the plane increase its airspeed, change its ground track, or just continue to fly “backwards”?
1 post - 1 participant
Hello,
I’m doing initial tuning of quadcopter I made with custom 3d printed frame and hobbywing x6-se motors with 22 inch props CM-X6-SE
I have esc connected with CAN bus but looks like I’m getting RPM reading that are higher than real, so my notch filter sets to higher frequency than needed, is settings INS_HNTCH_REF correct way of doing this? Is that usual for hobbywing X class motors?
If possible please advice of correct logging setup and I would appreciate with any hints and notes about my config.
Notch filter is set to ~ 70hz while actual noise is near 50hz
logs and video attached
3 posts - 2 participants
Hello! We are building a catamaran autonomous boat using PiXhawk PX4 Pro. We have configured it already for joystick remote control we are able to control it with no problem, but it’s having a hard time maneuvering for autonomous mission plans. When we set a mission and start, only one motor activates for some reason.
Parameters we have set so far (AFAIK):
Flashed ArduRover
FRAME TYPE - ROVER
SERVO1_FUNCTION - Throttle Left
SERVO2_FUNCTION - Throttle Right
MOT_TYPE - Normal
There seem to be no parameters about steering type or skid nor nav1.
We set the Serial Mavlink Version to 1 for the Telem 2 we use. (We are using Radio V5 Telemetry)
We use two 500W Brushed Motors with one ESC for each. (Note also, our ESC can connect to two motors but we use one each at OUT1 & 2, noting maybe it has significance.)
Anyone here have experience building catamaran UAVs? Any help would be appreciated as this is for our undergrad research. If you need more details, we are willing to provide more. Thank you!
1 post - 1 participant
Release Update
Issues & Pull Requests
Discuss how we could specify a white list of writable variables and the default read only.
GSOC
1 post - 1 participant
I’m trying to log Gyro 1 and Gyro 2 at a sampling rate of 8 kHz using the IMU Batch Sampler to measure vibration. However, when I open the log files in the ArduPilot Filter Review Tool, it shows that my primary gyro is only logging at 1.6 kHz—or sometimes as low as 1.3 kHz. I’ve already tried setting INS_GYRO_RATE to 4k and 8k, but the primary gyro still logs at the same lower rate. The second gyro does log at 4k or 8k, but I can’t review its data because it’s grayed out in the tool.
Additionally, here you can download one of the logs to see the parameters Unique Download Link | WeTransfer
1 post - 1 participant
I’m doing a hexacopter build with two 4-in-1 ESCs. One of them is from the flight controller manufacturer and its current sense wire is connected in the standard way. I want to connect the current sense wire of the second one to a spare Rx, then configure it so that the sum of both is displayed as my current draw. (and used to calculate mAh used) My understanding is that this can be done but I wanted to confirm for sure and ask if someone can help me configure this properly.
1 post - 1 participant
Hi there!
I am now building OctoPlane with Durandal FC.
I bought two Aocoda-RC 2035 4in1 ESCs which have BLHeli-s FW for the VTOL motors . I am intending to controll motors through PWM not DShot.
I tried to connect BLHeliSuite with these ESCs but failed. There was following message.
“Connection to Flightcontroller failed! Please check usb/serial Port -und power-connections to the interface!”
BLHeliSuite recognizes Durandal FC because there are COM8 Duranadal and COM7 Durandal SLCAN messeges in the Port.
Please help me to resolve this issue.
1 post - 1 participant
Good day,
I am starting a new project that will require a bait boat, about 500mm long. to be automated to drop bait into a lake. It currently works with 2x bait buckets that is triggered by a transmitter to operate servos to do the dropping. The boat is full RC at this stage and is making use of one DC brushless motor for propelling and a servo operating the rudder.
The idea is to install a ardupilot system so the bait can be dropped on the same spot every time. It should be possible to program multiple dropping points with the remote transmitter and also program a launch / home position from the transmitter.
the transmitter will be a Flysky FS-I6x.
I am new to ardupilot and the boards is not widely available where I am based so will need to order on Aliexpress.
Can someone please give advice on what board will be suitable and possibly provide a link as I dont want to make the wrong purchase. I also want to keep the project as cheap as possible. The boat will not be required to go on missions outside of the transmitters range.
2 posts - 2 participants
I been using a Pixhawk 1 on my new flying wing recently, and after our first few flights, we switched out the battery, and ardupilot would no longer arm, saying IOMCU_reset, internal error, and IOMCU not healthy. We power cycled many times, and even tried using the old battery, but nothing worked. The plane flew perfectly before this.
After I got home, I unplugged the pixhawk, wiped the SD card, and plugged it back in, and it was still giving the error. I unplugged everything again, and plugged everything in one by one, and now it’s working again, even after power cycles.
I’m not too sure what is going on here, and I fear there is a hardware problem, or maybe I just had a loose connection somewhere (the other parts of the FC was working fine, like telemetry link and GPS).
Any ideas on what happened here and if should I should be good to go to fly again? Thanks
1 post - 1 participant
I’m working on a heavy-lift octocopter and currently using INS_HNTCH_MODE = 1 (Throttle-based) for noise filtering. The ESCs I’m using are HV 14S 60V 240A models, and I also have external peripherals to receive RPM telemetry from all ESCs via CAN bus.
I’d like to get feedback on whether it’s possible to use ESC telemetry-based filtering with RPM data via CAN bus. Additionally, I’m interested in understanding the pros and cons of using ESC telemetry-based vs throttle position-based noise filtering.
1 post - 1 participant
Hi All,
Tau GeoSystems is a world-leading drone geophysical hardware manufacturer that completes surveys for mining companies that image the earth’s subsurface. ww.taugeos.com
Tau are searching for one or two experienced and senior drone pilots to fly geophysical drone surveys in different countries around Asia and the world. The ideal applicant for the role loves to travel, see new places and meet new people, enjoys working outdoors, works autonomously by planning and scheduling their work to be completed in the most efficient manner and can problem solve in the field. If you are passionate about the drone industry and it’s potential, Tau would like to speak with you.
Tau are looking for reliable pilots who hold safety as their highest priority and don’t deviate by taking any risks to people or aircraft. The preferred applicant will show an understanding of how to operate a drone to a similar level required in the manned aviation industry, by following procedures, checklists, maintenance routines, notifying of unserviceable items etc.
Tau only uses Ardupilot and are rapidly developing capabilities for BVLOS, collision avoidance etc. The ideal applicant will be able to demonstrate a portfolio of Ardupilot based models they have produced and operated.
Any prior experience in regards to either maintenance, coding, lua scripts etc will be viewed favourably.
In addition applicants will exhibit the following experience or ability to be;
• Responsible approach when working with field team members in a crew environment
• Strong problem-solving skills, interpersonal skills, and a professional demeanour
• Coordinate daily work plan/ communicate with landowners, clients and management.
• Plan and execute complex low-altitude survey missions.
• Hands on launch, recovery and ground station operations for UAS flights
• Be proficient in multiple survey UAS sorties per day and able to meet strict project timelines
• Quality check geophysical and other sensor data after each flight.
• Responsible for in field UAS, battery and ground systems maintenance and care.
• Conduct adhoc ground-based geophysical survey work as a follow-up to UAS surveys.
• Share in driving (4WD vehicles) to and from locations plus setup of ground station locations
• Must have good mechanical aptitude and the ability to manage multiple tasks simultaneously
• Ongoing commitment to getting the Project done safely and efficiently
• Ability to lift at least 20+ Kg (Batteries, Fuel and equipment), a good level of fitness is also a safety requirement on many exploration client sites
• Periodic medicals and the like, will be required for all staff required to travel to certain Exploration client sites
• Client required site inductions and adherence to strict site safety protocols
The work will initially be to complete drone surveys throughout Asia. This involves travelling to see different countries around the world for three week periods. Between surveys you will be given the opportunity to develop capability that will improve the safety, capability and increase the rate of the survey from a home base. Once you have a good understanding of the business and the benefits of the equipment Tau manufactures, you will be tasked to train partner company’s drone operators around the world. Please include if you have experience training drone pilots.
Please email your CV to adam.kroll@taugeos.com and please include examples of Ardupilot based equipment you have developed or used for work.
Cheers, Adam.
1 post - 1 participant
