Kevin Klein's Groups

Kevin Klein's Discussions

Vibration Damping - a simple fix?

Started this discussion. Last reply by Para Jun 30, 2013. 3 Replies

Remembering our physics we know that a = F/m.With that in mind, I figured one of the best ways to reduce vibration (which is proportional to a), would be to increase the mass of the APM.  To that…Continue

jDrones GoPro Mount

Started Jan 17, 2013 0 Replies

Had a little miscommunication over the holidays and ended up with an extra GoPro gimbal mount, just like this one:…Continue

Tags: gimbal, mount, gopro

Remote status LEDs

Started this discussion. Last reply by Pieter May 19, 2013. 46 Replies

Having status LED's on the board is nice, but they're next to useless when the board is mounted in the stack or under a cover. The next rev of the board IMO should be designed so that these LED's can…Continue

Motor cuts out

Started this discussion. Last reply by Kevin Klein Nov 3, 2012. 5 Replies

I believe I received a defective motor from 3DR.I ordered the Quad kit, full electronics, with the 850kv motors.When I apply throttle, all of the motors start up (no props!), but one of the motors…Continue

 

Kevin Klein's Page

Latest Activity

Kevin Klein replied to Gary McCray's discussion Vibration Isolation and Dampening of APM / PX4 for version 2.9
"Your analysis is very good, so I am surprised that the solution isn't obvious: add mass to the APM board. I started by mounting the APM to the frame on 4 x 0.5in^3 pads of DuBro foam. There was some improvement, but the vibration levels…"
Aug 6, 2013
Kevin Klein replied to Randy's discussion ArduCopter-3.0 ready for wider use
"Try adding a mass damper to your APM board. I sticky-taped a stack of four US quarters to the bottom of the board and it helped immensely."
Jul 11, 2013
Para replied to Kevin Klein's discussion Vibration Damping - a simple fix?
"Three years back I was trying to soundproof a club running in a buildings basement. The best material on the market was a sandwich made of rubber, lead foil and foam. Probably would work for our FCs as well :)"
Jun 30, 2013

T3
Richard Boyhan replied to Kevin Klein's discussion Vibration Damping - a simple fix?
"I with John the only draw back is weight and less flight time."
Jun 30, 2013

Developer
John Arne Birkeland replied to Kevin Klein's discussion Vibration Damping - a simple fix?
"You are correct. When it comes to motors and propellers this is one of the often misunderstood parts of multicopter design. Mounting your motors on soft rubber feet will perhaps at best isolate some of the vibration from the rest of the frame, but…"
Jun 30, 2013
Kevin Klein posted a discussion

Vibration Damping - a simple fix?

Remembering our physics we know that a = F/m.With that in mind, I figured one of the best ways to reduce vibration (which is proportional to a), would be to increase the mass of the APM.  To that end, I taped together a stack of 4 US quarters and sticky-taped that to the underside of the APM.So now I have my APM supported by 4 pillars of 1/2" Dubro with a stack of quarters stuck to the APM as a mass damper. Judging by the raw logs, this seems to have smoothed things out quite nicely.Can anyone…See More
Jun 30, 2013
Pieter replied to Kevin Klein's discussion Remote status LEDs
"Does this work for arduplane?"
May 19, 2013
Cletus Berkeley replied to Kevin Klein's discussion Remote status LEDs
"Pretty cool, easily implemented and works damned good .....RED (A4) blinks when disarmed and solid when armed. BLUE (A6) blinks when acquiring sats and  solid when GPS fixed."
May 18, 2013
Michael commented on Kevin Klein's blog post A super-cheap stack cover for your ArduCopter
"I good one of the harder and thicker rubbermaid containers. Its clear so I don't have to wire extra LEDs."
Jan 26, 2013
Kevin Klein posted a discussion

jDrones GoPro Mount

Had a little miscommunication over the holidays and ended up with an extra GoPro gimbal mount, just like this one:http://store.jdrones.com/ArduCopter_GoPro_mount_p/mntgopro01.htmIncludes a quad mount plate.Brand new, unopened, still in shipping envelopeIncludes shipping anywhere in the ConUS.$40, PayPal onlySee More
Jan 17, 2013
Kevin Klein replied to Mike Cox's discussion Arm/Disarm Alerting
"I had a similar question a few weeks ago. Hope this helps...http://www.diydrones.com/forum/topics/remote-status-leds"
Dec 14, 2012
Kevin Klein replied to Simone Chiaretta's discussion Motors LED
Dec 8, 2012
Oliver Sumpton commented on Kevin Klein's blog post Fixing a 3DR frame weakness
"Kevin: this is brilliant. I hope 3DR contacts you immediately about implementing this into their frame kits. The weak motors mounts are not a minor issue. It's really a deal breaker."
Dec 7, 2012
Stephen R Mann commented on Kevin Klein's blog post Fixing a 3DR frame weakness
"I use the motor mounts that came with the motors in my 3DR kit. "
Dec 4, 2012
Kevin Klein commented on Kevin Klein's blog post Fixing a 3DR frame weakness
"Sorry guys, but my machining skillz are not good enough to build these for others in either the quantity or quality required."
Dec 3, 2012
Jon von Weymarn commented on Kevin Klein's blog post Fixing a 3DR frame weakness
"What Knut said! I already have 2 bent arms so there is a need for this!"
Dec 3, 2012

Profile Information

Please tell us a bit about your UAV interest
Just messin' around

Kevin Klein's Photos

Loading…
  • Add Photos
  • View All

Kevin Klein's Blog

Fixing a 3DR frame weakness

Posted on December 1, 2012 at 10:30am 6 Comments

One of the weak spots of the current 3DR frames is that the aluminum walls of the arms are very thin. The motors mount directly to the arm and in the event of a "landing anomaly" the aluminum wall is easily deformed by forces on the motor.

My solution was to construct "backing plates" for the motors. The plates fit inside the arms and slightly longer screws are used to attach the motors through the plates. The plates are simple 1/16" aluminum sheet drilled to match…

Continue

A super-cheap stack cover for your ArduCopter

Posted on November 4, 2012 at 5:00pm 4 Comments

I found a low cost, easy way to fabricate an electronics stack cover for your ArduCopter. You will need:

1 Ziploc Brand Container, Medium Square size

4 Rubber Bands, 1"-1.5" diameter

Modify the container by cutting 8 "posts" in the lip for fastening the rubber bands.…

Continue

Comment Wall

  • No comments yet!

You need to be a member of DIY Drones to add comments!

Join DIY Drones

 
 
 

Groups

Season Two of the Trust Time Trial (T3) Contest 
A list of all T3 contests is here. The current round, the Drone Delivery Challenge, is here

© 2014   Created by Chris Anderson.   Powered by

Badges  |  Report an Issue  |  Terms of Service