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  • Moderator


    That's weird timing....a nearby college is sending a few people to Rwanda next week with a multirotor to do some mapping. 

  • Developer

    We now have a new shiny discussion and support forum for ArduPilot and supporting projects at http://discuss.ardupilot.org. Please come visit us there for all things ArduPilot. We look forward to seeing you.

    Full announcement @ here

  • Developer

    I've been building an IconA5 Seaplane as I want to test AUTO takeoff and landings on water with ArduPilot. I managed to crowbar a pixhawk and accessories into the plane - just.
    The plane comes with removable wheels so I thought I'd fly and tune it on land first. The problem I was having was the nose wheel. It is VERY fragile and I broke it almost immediately. I spent some time trying different ways to secure it but still have it removable for the water takeoff/landings. After it came off again Tridge dared me to try an AUTO takeoff without wheels - CHALLENGE ACCEPTED!!!
    It worked!  Video here:

    This is actually the second AUTO takeoff with no wheels. Because we didn't think it would work we didn't film the first.
    This is a full ArduPilot AUTO takeoff. I simply flick the transmitter switch to put the plane into AUTO mode and it does the rest. This is why it heads to the right a bit. Normally in AUTO takeoff the plane will auto takeoff in the direction its pointed i.e. straight down the runway however as it has little directional control on the ground and "squirms" a bit until it picks up speed its direction isn't perfect.

  • Do you guys have links on how to install Airspeed sensor on MINI APM 3.1?

  • @Grant

    Here's several 3.4 logs 


  • @ Grant when was the large update done?

    I've been flying the dev version since about 3 weeks ago. I was very keen on the 'boat mode' aspect. Works great! 20-30 flights.

    I might have notice it resetting it's home position whilst in flight with 13 sats which was odd. This was reported to me by my GCS...  but not sure really what happened might have been my GCS / tower lost connection I'm really not sure. My guess is it was me. I had 13 sats when it happened but I might have armed with only 6-7 so ... it was probably me. But if you hear of others.....

     BTW... do these numbers give you details about the date / build version? 

    PX4v2 0036002D 30345101 37383933

    Anyway it just keeps getting better :] Thank you!!!!!!!!!!!!!!!

  • Developer

    If any keen users out there are being super brave and running the autopilot with the master code base and have odd behaviour they haven't previously noticed we would love to hear from you.  A large updated has been done to the PX4Firmware code and we are keeping out an eagle eye for any odd behaviour.

    Thanks, Grant.

  • RoboFlight RF-70 70" EPP 2.0 Kit Promotional Offer - $850 US Dollars (Also have a few Ready To Fly units. Inquire privately)

    ***Please email phil@agpixel.com if interested



    $850 US Dollars

    Please message me for more details if interested. This can be launched via bungee cable and hook even with full payload. EPP 2.0 is much more durable than traditional UAV foam options.

    Highlight Video: https://vimeo.com/107972900

    EPP Density Explained: https://www.flyingfoam.com/content/epp-foam-sheets

    RF-70 Flying Wing: Performance – Specifications

    Maximum at Sea Level 55 knots
    Cruise 35 knots
    RATE OF CLIMB 800 feet per minute
    SERVICE CEILING 10,000 feet MSL / 400 feet AGL
    STALL SPEED 10 knots
    MAXIMUM WEIGHT 13 pounds
    MAXIMUM USEFUL LOAD 6.5 pounds
    WING LOADING 2.14 ounces/ft²
    BATTERY VOLTAGE 14.8 volts / 4S
    RECOMMENDED MOTOR Hyperion ZS 3025 8-Turn 970 KV brushless outrunner
    PROPELLER 12” X 8”


    2.0 Density Expanded Polypropylene (EPP 2.0 Density) foam
    Designed and Manufactured in the US

    Front Bay: L 13” x W 5” x H 3”
    Rear Bay: L 12.5” x W 5” x H 3.5”
    Side Bays: L 7” x W 3.75” x H 1.5”

    3D Robotics PixHawk
    Designed and manufactured in the US

    Number of engines: 1
    Engine Manufacturer: Hyperion
    Engine Model Number: ZS3025B-08
    Engine Type: Electric Brushless Outrunner

    Manufacturer: Castle Creations
    Max Continuous Current: 75 Amps
    Designed and manufactured in the US

    Manufacturer: Advanced Precision Composites
    Propeller Model Number: APC12080E
    Number of Blades: 2
    Propeller Diameter: 12 inches
    Propeller Type: Fixed Pitch
    Propeller Material: Molded Nylon
    Designed and manufactured in the US

    Battery Type: Lithium Polymer
    Battery Capacity: 10,000 mAh
    Battery Voltage: 14.8 volts
    Battery Cells: 4 cells in series

    Maximum Weight: 13 pounds
    Empty Weight: 6.5 pounds

  • Good evening,
    I have just bought a apm unit with external Ublox gps unit and external power module,
    This is being fitted to a Hobby King Bixler 2 Plane
    I have done all the Inital setups and calibration as per instructions using the new version apm2 software
    But unable to get gps lock on the screen or unit.
    Can any one help with this part of setting or am I missing something out of the advanced settings
    I look forward to hearing from you.
    Nigel Newall
This reply was deleted.

Cruise speed

Hi,I want to adjust cruise speed.At default settings I have a ground speed of about 42km/h (without airspeed sensor), and I think the optimal speed should be lower. In the mission planner I have value "Cruise speed", default 12m/s. I updated it to 9.5, but don't see any change in actual cruise speed.How to set cruise speed?Are these different settings with RTL speed? For RTL I prefer keep it as is - less efficient, but more reliable.Is it possible to adjust cruise speed during flight, providing…

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0 Replies

Long distance LiPo

I'm currently building a Talon (v3), mainly waiting for parts.While looking for high capacity batteries I found out two things; There are a lot of brands, and prices are still steep in the high-cap regions.I've also seen a few people on the Tube using 18650 cells, but none of those explain why.Does anyone here have experience with these custom 18650 packs?And which 'cheap' brands of standard 5~12A 4S seem to work best?I'm going to use an Emax GT3526 710KV swinging a 13x6.5 prop, which should…

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5 Replies

Quad plane pitch problem

Hi I have been setting up 2 quad planes, pretty standard setups...flying wing with 4 vtol motors and a rear mounted pusher motor. Both builds wich are on different firmware versions have reversed pitch in quad mode but correct pitch and pitch stabilisation in plane mode. I cannot for the life of me find a parameter related solely to quad pitch reversal. Is there anyone out there that can help with this? Thanks.

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2 Replies

PreArm Check Error : Gyros inconsistent

Hi guys, I have a Pixhawk from Radiolink and always in every first attempt of armed I get the error "PreArm: Gyro Inconsistent".The most strange thing is that i'm using only the external gyro+compass. i disabled the internal to avoid this issue. Also- I tried to recalibrate the gyros at least 5 times.- I changed the firmware version from the latest to the 3.8.53 because i have a friend with the same board and he does not have issues.But i have the same behaviorIf i disconnect the battery and…

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2 Replies