mike_kelly's blog View Details
Archive for April, 2019
Posted by mike_kelly | Apr 16, 2019 @ 07:32 PM | 6,715 Views
I am relieved to find that with the gimbal attached the Son of FrankenSolo flies just as well as without the gimbal. I am disappointed to find that the logs once again not available. So I can't compare the power usage and determine if it is within the "C" limits of the battery. I am pretty confident that it will be fine but I am not going to do a flight time test until I know for sure. I am not willing to let the battery fail half way through the test.

I started out on this journey in 2012. I knew nothing about RC and RCGroups.com was pretty intimidating. I could not believe how many forums about so many different RC vehicles there were. I wanted to do an abstract photography portfolio that I needed an aerial view to do. I got a delta wing kite kit that was and is a very nice plaform but I needed to hover rather than fly to get what I wanted. I gave up until I saw an article about the new DJI Phantom in late 2013. I got excited about it like everyone and his brother. Until I realized it could only carry a gopro. But that was the beginning. I built my first DJ450 afterward. The first flight it shot up about 40ft and came tumbling down out of the trees out of control. It took me a full 4 months to figure out that the pitch in mission planner radio cal moved the opposite of every other stick if setup correctly. I built a dozen more aircraft over the years. I have a drawer full of half finished gimbals.

So this is a significant point for me. Only took me 6...Continue Reading
Posted by mike_kelly | Apr 15, 2019 @ 06:47 PM | 6,431 Views
I finally got the logging issue taken care of for SOFS. IN the latest versions of Copter firmware there is a new Log_Backend parameter. Because the Solo has a co-computer it can, and defaults to, copying the logs to both the flight controller and the co-computer which does not appear to work right. So I changed the parameter to 1 which uses only the flight controller as normal.

I was really pleased with the vibration charts but it is not surprising given how well the quad flew in it's maiden flight. In the old graph of vibrations acceptable is -3 to +3 for the X and Y axis and -5 to -15 for the Z axis. SOFS is recording values for X and Y of less than .3 to .5 and Z axis vibes just as low. I included the barometer graph right below to show it really was flying during the vibration plot.

I was concerned, and still am, about the battery. It is a 10.5amp Titan LI-ION battery. It has much higher energy density than a equivalent LI-PO but it is limited in it's discharge rate. Think real low C, like 3C. But the battery power graph looks good. It shows about 360w and around 16amps. But this is without the load of the gimbal. So I will have to see how it does on the first gimbal flight.

...Continue Reading
Posted by mike_kelly | Apr 08, 2019 @ 08:36 PM | 7,844 Views
I got a chance to maiden the Son of FrankenSolo in between rain storms this afternoon. Yes OlliW I removed the gimbal

All I can say is WOW. It was so smooth with no tuning at all. Very precise control. No jumping around. Unfortunately I had a "Bad Logging" problem which looks like an on-going problem with Arducopter. I turned down the logging and the log buffer and the IO heartbeat and BAD logging errors are gone. But I will have to do my basic test again to get logs to check the vibs and battery usage trends. I can't wait to take it up with the gimbal.

Son of FrankenSolo project (0 min 55 sec)

Posted by mike_kelly | Apr 07, 2019 @ 09:23 AM | 8,368 Views
Welcome to my blog. Hopefully you will find something worth your visit.
UC4H: UAVCAN for Hobbyists
CANbus Quadcopter using UC4H : Son of FrankenSolo
UC4H part1:UC4H : Son of FrankenSolo UC4H Powermodule
UC4H part2: UC4H : Son of FrankenSolo Flight Controller
UC4H part3: UC4H: General Purpose Node
UC4H part 4: UC4H: Son of FrankenSolo gets ESCs!
UC4H part 5: UC4H: Configuring the ESC's
UC4H part 6: UC4H: Finishing the Notify Display
UC4H part 7: UC4H: CANbus dual GPS
UC4H part 8: UC4H: LIDAR Rangefinder inproves low altitude measurements
UC4H part 9: UC4H: Mavlink Bridge, bringing UC4H to Mission Planner
UC4H part 10: UC4H: Large Display OLED
UC4H part 11: UC4H : Son of FrankenSolo Finished, a gimbal for Son FrankenSolo

Ardupilot Pixhawk:
The cleanest, simplest Arducopter build ever?
UAVCAN: CANbus for the rest of us
The Ardupliot Project Developers: The people that make it possible
Controlling external devices like Gimbals and lights with APM
Pixraptor Pixhawk clone with sensor suspension, a better pixhawk?
Pixhawk LITE, a replacement for the now obsolete APM boards?
Mini Pixhawks compared
New Status display for Pixhawk replaces beeps and flashing lights.

3DR Solo raised from the dead by the Open Solo project
Designing an X8
Pixhawk Advanced Features for Beginners:
Learning Pixhawk & Mission Planner - Part 1: Loading firmware
Learning Pixhawk & Mission Planner - Part 2: Setup and calibration
Learning Pixhawk & Mission Planner - Part 3: Troubleshooting Pixhawk
Super Simple Mode
Landing Gear - retracts
Return to Launch
Motor Order and Motor Test
Controlling external devices like Gimbals and Lights with Pixhawk
Controlling external devices like Gimbals and lights with APM

Newbie to Newbie:
An introduction to Multirotors
Battery Technology
Motors and Speed Controllers
Flight Controllers
RC Transmitters
Learning to Fly
Basic introduction to FPV
Gimbals 101

eCalc Aircraft Performance Simulation
eCalc a design tool for multirotors
Using eCalc to optimize motor selection
Posted by mike_kelly | Apr 07, 2019 @ 09:07 AM | 8,389 Views
Mini Pixhawks compared
Daya H4 680 Alien folding quadcopter
A cheap adroid tablet for APM/Pixhawk and Droidplanner 3 - Tower
Pixraptor Pixhawk clone with sensor suspension, a better pixhawk?
Pixhawk LITE, a replacement for the now obsolete APM boards?
Marek Rokowski Simple FPV Goggle Kit
Marek's 4.3" Goggle kit
Sony QX10

The 3DR Solo is raised from the Dead by the Open Solo Project
Mounting a Gimbal
New Status display for Pixhawk replaces beeps and flashing lights.
InfraRed NIR Cameras and NDVI imaging for agriculture and research
Tarot weights and measures
The Ardupliot Project Developers: The people that make it possible
Linux based Flight Controllers
Evolution of an RC Enthusiast - in search of reliability - ZMR 250 Coaxial
Mini quad motor comparision RCX H1806 RCX1804 RCTimer 1806 DYS BE1806
Ultimate LRS - APM with long range control and telemetry
Tarot 680Pro Extended arms with ESC mounted in the ends
Broken Tarot Landing Legs
Tarot Quick Detach Propeller adapters TL68B35 TL68B36
Tarot TL68B33 Anti-vibration motor mounts
Troubleshooting APM flipping on new build
My Perfect Tarot Travel Case for 650 Sport 680 680PRO 690
Canon FPV Video AV cable for S100 G10 ELPH Powershot
Boscam TS321 RC302 Channel dip switch settings mystery
What's wrong with cheap props?


FrankenSolo: Converting a 3DR Solo to UAVCAN
A new Tarot 680Pro hybrid with Daya H4 680 metal arm clamps
Blackout mini H as a training tool
My Take on a Ground Station
ZMR 250 X8 Octocopter! Coaxial Quads
Posted by mike_kelly | Apr 02, 2019 @ 02:21 PM | 8,924 Views

All good things come to and end and so it is with the Son of FrankenSolo. What a fun project.

I built a gimbal for this project using OlliW's STorM32NT gimbal controller. OlliW has provided excellent compatibility with Ardupilot and your choice of connection methods. You can use PWM, Sbus, Spektrum or serial connections between the flight controller and the gimbal. You can use Mavlink or OlliW's own STorM32 mode serial. Lastly you can use native mode STorM32 as I did which is a serial connection and the Betacopter branch of Ardupilot which includes OlliW's improvements for his gimbal. Native mode has the richest set of features.

...Continue Reading