"Do you have those bullet connectors along the wiring between ESC and motor ?
My experience with these (on gen 1 ArduCopter) was intermittent bad connectivitythat resulted in intermittent motor glitches. By soldering up the connectors solidthe…"
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Gunnar Forsgren mobimation.com
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Gunnar Forsgren mobimation.com's Discussions
Arducopter took snow dive
Started this discussion. Last reply by Sebastian Gralla Mar 8, 2011. 5 Replies 0 Likes
I pulled out the Arducopter for renewed trainings yesterday. Lots of snow here and below freezing temp. Still too unskilled and with some wind I lost orientation of direction and steered the wrong…Continue
Tags: calibration, arducopter, snow
New site "glow" menu entries gives me the creeps
Started this discussion. Last reply by Gunnar Forsgren mobimation.com Feb 11, 2011. 7 Replies 0 Likes
Can some one re-assess the choice of adding those"glow" effect menu entries on the site. Things look quite bleak now in navigating DIY DRONESand is not a good improvement in my opinion. I begin to…Continue
Tags: usability, experience, user, appearance, site
PWM frequency for driving ESCs ?
Started this discussion. Last reply by Sebastian Gralla Dec 22, 2010. 3 Replies 0 Likes
I read this post in a another forum where a guy claims 50Hz is insufficient PWM cycle for accomplishing quadcopter stability. Is there a truth in this ? What is the cycle of the ArduPilot PWM…Continue
HK GCS looks cool for Arducopter w/ Google Earth
Started this discussion. Last reply by Aurelio R. Ramos Feb 9, 2011. 1 Reply 0 Likes
I saw this thread where "HappyKillmore" has added support for an "APM binary stream". So this might mean additional fun stuff for Arducopter pilots in the future: …Continue
Gunnar Forsgren mobimation.com's Page
Latest Activity
Gunnar Forsgren mobimation.com replied to Warren Purnell's discussion Motor pulsing in Altitude Hold in the group ArduCopter User Group
Bill Bonney replied to Gunnar Forsgren mobimation.com's discussion Propeller install notes"Use a prop puller http://www.rcdude.com/servlet/the-765/Hyperion-Collet-Puller-for/Detail"
mP1 replied to Gunnar Forsgren mobimation.com's discussion Propeller install notes"How does one remove a collet and prop assembly that is stuck ?
In my case the easy bit was sliding the collet off the motor shaft with a screwdriver, and this only required a small bump. However the collet is stuck. I loosen the bullet nut, as…"
mP1 replied to Gunnar Forsgren mobimation.com's discussion Propeller install notes"Could you provide a link to the ones you use. Im not a fan of collets and would like try other adapters."
Mark Lewus replied to Gunnar Forsgren mobimation.com's discussion Propeller install notes"And tolerance in prop height is not a problem because the largest contributor to any prop's height relative to the others is the build tolerance of the frame and flex in the frame tubes due to flight loads and differential thrust. The adapter…"
Jack de Valpine replied to Gunnar Forsgren mobimation.com's discussion Propeller install notes"Hi All,
Thanks to everyone for input on the prop washers for the APC 11x4.7 props. I bought a 6.3mm drill bit from McMaster Carr and that seems to have done the trick. Now on to the next issue.
I was just mounting the props to see what it all…"
Mark Lewus replied to Gunnar Forsgren mobimation.com's discussion Propeller install notes"A couple of people seem to be having problems with prop adapters coming loose. Here is one way to prevent this that has worked for me for many years.
In the US, Loctite sells a "Green" formula retaining compound similar to…"
DeveloperR_Lefebvre replied to Gunnar Forsgren mobimation.com's discussion Propeller install notes
"I just had a look at my setup. For reference, I have the small 850kV motors. The shafts are 4.58mm. The APC props that it came with have adaptors at 4.72mm. So .14mm gap. Not too bad.
However, I broke one, and had to…"
3D RoboticsChris Anderson replied to Gunnar Forsgren mobimation.com's discussion Propeller install notes
"Jack. The issue with APM props is only with the 11" props on the 880 motors. The 10" props on the 850 motors, which is what most people choose, are fine. "
Jack de Valpine replied to Gunnar Forsgren mobimation.com's discussion Propeller install notes"It looks like the current kit gives options for two APC (grey) prop sets depending on the motor selection. Does this same issue occur with the smaller motor/prop combo?
I guess I will try drilling, although I am a bit concerned about precision as I…"
Brad Pittevski replied to Gunnar Forsgren mobimation.com's discussion Propeller install notes"yes, it is the APC props for me here too. I ended up using drills in steps on the rings once they were mounted: 6.1mm, 6.2mm and 6.3mm one after another to keep it centered as good as possible."
3D RoboticsChris Anderson replied to Gunnar Forsgren mobimation.com's discussion Propeller install notes
"Hmm. The props I got were black and they fit perfectly. It looks like you got APC props, which are better (less flexible) but it does look like APC doesn't include a wide-enough range of rings. I'd suggest you do what Robert did and put in…"
Jack de Valpine replied to Gunnar Forsgren mobimation.com's discussion Propeller install notes"Here is an image that shows the slack with a stock prop.
"
DeveloperR_Lefebvre replied to Gunnar Forsgren mobimation.com's discussion Propeller install notes
"I've got this same problem. None of the rings on my props actually fit the adaptor properly. So it's almost impossible to get the prop centred accurately. One of the rings is about .5mm too big, the other too small.…"
Jack de Valpine replied to Gunnar Forsgren mobimation.com's discussion Propeller install notes"Chris, if I put the prop onto the axle/hub assembly stock, ie no insert/washer, there is a fair amount of play or slack so there is no way to get the prop centered on the axle/hub assembly. I would guess this would lead to spinning prop being out of…"
3D RoboticsChris Anderson replied to Gunnar Forsgren mobimation.com's discussion Propeller install notes
"Jack: I just checked mine, and I see that I didn't use the rings at all. The props went on the shafts as they are.
I'll let them know to add that to the instructions."
Profile Information
- About Me:
- Mobile-to-Machine solutions developer (Java ME, Android, iPhone, IO controllers, etc.)
Previously 28 years as Ericsson / Sony Ericsson development engineer,
enbedded systems and Java in mobile phones.
Now taking fate in own hands with my mobile-to-machine solutions company, see http://mobimation.com
My ArduCopter specs are:
Commercial pre-soldered kit ArduCopter first batch #42, running Alpha RC1 with GPS, pampered with Magnetometer and XBee serial link..
- Tell us a bit about your UAV interest
- I remember watching the older guys fly RC models in summers back in the 70´s and I always wanted to get into it. My only experience back then was within 5 seconds of first flight crashing my control line stunt model that had an all too powerful O.S glow engine. http://en.wikipedia.org/wiki/Control_line Here we are 35 years later.
I recently picked up realising this teenage dream to master RC flight control. I got some Phoenix simulator mileage now. I´ve quickly ended up with six RC planes in different states of assembly and associated field gear, without even having flown any of them yet. I own an AR.Drone with 30 seconds flight time so far, I will explore mobile phone interaction with UAV´s as time comes :) UAV is cool because it givers a great hands-on insight into accomplishing stabilising features not present in traditional wing based RC models.
- Hometown:
- SOLNA, Sweden
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Season Two of the Trust Time Trial (T3) Contest has now begun. The fourth round is an accuracy round for multicopters, which requires contestants to fly a cube. The deadline is April 14th.A list of all T3 contests is here.
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