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Archive for December, 2019
Posted by Mad_angler1 | Dec 13, 2019 @ 10:28 AM | 20,850 Views



The Ardupilot team have announced an update due a critical I2C Storm bug being found in some versions of Ardupilot.

More Info https://discuss.ardupilot.org/t/copt...or-older/50130

In Copter versions 3.6.10 and Plane 3.9 or earlier thisI2C bug has the possibility to cause an Autopilot to lock up mid flight.

It is advised all users Upgrade Copter to 3.6.12 and Plane users install Plane 4.0 or later.

The Dev team state

Copter-3.6.12 has been released as the official default software for MultiCopters and Helicopters.

For those flying 3.6.10 (or earlier) the upgrade is Critical to avoid possible lockups due to I2C storms. These situations are rare but we have seen enough of them that we strongly recommend upgrading.

For those flying 3.6.11, your vehicle is probably safe but we still recommend upgrading to 3.6.12 because it includes a fix to another rare case of I2C storm lockups caused by extreme interference on the bus. We have one reported case which involved a serial port inadvertently connected to an I2C port.

The upgrade from earlier versions of 3.6.x should be relatively painless with no re-calibrations required unless you see pre-arm checks prompting you to do so.

The two new changes in 3.6.12 are in the ReleaseNotes 6 and copied below.

Fix ChibiOS I2C DMA error
COMPASS_SCALE param to allow manual correction of compass scaling
The second issue allows users to work around a compass scaling issue with the Hex Here2 GPS/compass unit. The Here2 compass unit’s scaling is off by about 17% meaning setting COMPASS_SCALING = 1.17 should improve accuracy. The accuracy can be checked before and after this change by:

fly the vehicle in any mode but ensure the flight includes chaning the vehicle’s heading
download the dataflash log and check the NKF4.SM values which are the compass’s “innovations” (the difference between the expected values and actual values). Lower is better so hopefully Here2 users will see lower values after setting the COMPASS_SCALING value to 1.17.
Note: beta testing of Copter-4.0.0-rc3 will resume next monday (Dec 16th).

Posted by Mad_angler1 | Dec 08, 2019 @ 02:50 PM | 18,498 Views
Prowler Rover Ardupilot Build



I am in the process of building a Ardupilot based rover on my channel and here I will also post the videos as well as some of the other issues and progress I make on this project.






Specification

ServoCity Prowler Rover Chassie
Dimension Engineering Sabertooth 2x32 DC Motor Controller
ProfiCNC/Hex Aero Cube Purple Autopilot
ProfiCNC/Hex Aero Herelink FPV RC System
GoPro Hero 7 Camera System
TFmini Plus Range Finder


Prowler Build Video Pt 1

New Prowler ArduRover Build Series - Pt1 Intro (2 min 54 sec)



Prowler Build Video Pt 2


PROWLER ROVER BUILD PT 2 - ASSEMBLY,TEST + SABERTOOTH 2x32 DRIVER OVERVIEW (23 min 34 sec)
...Continue Reading
Posted by Mad_angler1 | Dec 08, 2019 @ 02:35 PM | 18,310 Views
Below is all of my review and how-too videos on the DJI Digital FPV system, I will continue to update this as more are published.

Review Overview

DJI Digital FPV System - Complete Overview & Menu Walk Though (23 min 51 sec)




FCC HACK

DJI Digital FPV System Force FCC Mode Hack


DJI Digital FPV System Force FCC Mode Hack (5 min 10 sec)
...Continue Reading