Corbin Dunn
Redwood Monkey

All posts in 2014

Red Rocks climbing

Did some climbing in Red Rocks, Nevada last weekend. This is more of a record and reminder for myself. Last time I was there was in 2005 back when I was a strong 5.11 climber.... [read more]
Climbing

EV Page of Shame: Drax in a Lexus at the Aria Hotel in Vegas

UPDATE: Thank you Aria hotel! They are going to update their signage and start towing offenders. I just talked with someone from the security team and they are on top of this. They are also... [read more]
EV Page of Shame

Electric Bug: Running Again!

So, I got my new rebuilt transmission from MOFOCO. I put it back in the car and buttoned up the rear end entirely. I then attached the shifter…but, it wasn’t shifting! So, I posted on... [read more]
Electric Bug
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Adafruit CC3000 + Webduino = Arduino Web Server over Wifi

Adafruit has a CC3000 breakpoint board for $35 on their site. Rather expensive, considering the chip should be $10, but it adds some nice features and they wrote a library for it. Cut to the... [read more]
General

LED Cyr Wheel v2: Custom PCB

I finished designing a custom PCB for my LED cyr wheel. It simply combines all the chips I use into one board. Ideally I would eliminate all of the other boards except the Teensy, but... [read more]
General
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SD Card errors with Arduino / Teensy 3.0

With my LED cyr wheel I kept getting random errors in reading data from my SD card with Ardunio code. Sometimes init would fail, even at half speed. Most often I would get corrupted data,... [read more]
Coding, General

Firewood Hutch

An oak tree fell down at the end of last winter and I ended up with a lot of great firewood. I saved a few pieces for woodworking (we’ll see how those turn out), but... [read more]
Project Hutchinson

LED Cyr Wheel on Stage

Some pictures of my work with Velocity Circus at an event for UCSF Photos by Hiromi Yoshida, Courtesy of Gregangelo & Velocity Arts & Entertainment
Circus/Cyr Wheel

Photography: LED Cyr Wheel v2 Self Portraits

Self Portraits, Corbin Dunn, LED Cyr Wheel v2, September 11, 2014. Canon 5d, a timer of 10 exposures manually set for a specific aperture and shutter speed. Man Silhouette Pattern Test Single Pattern Test
Circus/Cyr Wheel, Photography

Final drive ratio in an electric conversion car

So, I’m getting a new transmission for my VW bug (number 3), and probably buying it from http://www.mofoco.com/category/Rebuilt_VW_Transmissions/c112. What drive ratio should I get? They can do a few different options. My bug is/was currently... [read more]
Electric Bug

Electric VW: Transmission Killer

In my last post on the bug, I had mentioned that I replaced my brushes, hoping it would fix some noise I was getting in the transmission/motor area. It didn’t help, and I then replaced... [read more]
Electric Bug

Kitty Cabinet: Finished

I finally finished my Kitty Cabinet. I had to wait for some more Water Based Poly finish to come; I had accidentally ordered “gloss” when I really wanted “satin”, so it had to be put... [read more]
Woodworking

Photography: Rome Street

Rome Street Camogli, Italy. August 2014. HDR from 5 exposures. Canon 5D Mark III, 24-70mm lens. No tripod; supported by a plant for a bit.
Photography

Photography: Camolgi, Italy

Camogli Camogli, Italy. August 2014. HDR from 5 exposures. Canon 5D Mark III, 24-70mm lens
Photography

Electric VW Bug: Brushes replaced

The rear end of my car has been making quite a bit of noise lately. It seems to only happen when I apply power, and I wasn’t too sure of what it was. If I... [read more]
Electric Bug

Kitty Cabinet: Finishing

one coat of Target Coatings shellac (amber), lightly sanded and then one coat of their water based Polyurethene (9000). Time to order more….
Woodworking

Kitty Cabinet

I’m building a little cabinet to hold the kitty litter box, and some accessories. On top I plan to put the cat’s food and water bowls, to keep them out of reach of bad doggies.... [read more]
Woodworking

New Corbin UniBar (unicycle handlebar)

I made a new handlebar for my geared KH26. I was using the KH T-bar, but it feels really flexy and it feels like the seat will eventually break from the pressure I put on... [read more]
Machining, Unicycling
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Fire LED Cyr Wheel Pattern

I took some demo code and modified it to do a fire pattern in the cyr wheel:
Circus/Cyr Wheel

Angular Velocity in cyr wheel

This is a plot of the angular velocity vector when spinning in my cyr wheel. I took the gyro x/y/z value and created a vector (squared each value, added them, and took the square root).... [read more]
Circus/Cyr Wheel

Accelerometer woes

I have a accelerometer/gyro/compass combo in my wheel LSM303DHLHC, data sheet: http://www.pololu.com/file/download/LSM303DLHC.pdf?file_id=0J564 found via Pololu’s link: http://www.pololu.com/product/1268 It has been tough to figure out consistent data. First of all, I realized the compass has to... [read more]
Circus/Cyr Wheel

NSTableView Tips: Doing Animations with Core Data

For my “Cyr Wheel Pattern Editor” app I am using CoreData and an NSTableView. However, I’m sort of “manually” doing bindings for the array content itself to get animations in the View Based NSTableView. Here’s... [read more]
Cocoa, Coding

NSTableView Tips: View Controller per row

Sometimes you may find your application has rather complex rows, and you want an NSViewController to manage each row in a “View Based” NSTableView. This is fairly easy to do, and I did it in... [read more]
Cocoa, Coding

NSTableView Tips: Not delaying the first responder

I have a little home-brew Cocoa app for making Cyr Wheel patterns. The UI is built with an NSTableView and looks like this: Now normally when you try to directly click on one of the... [read more]
Cocoa, Coding
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How to make a cyr wheel: Insert detail

Here’s some details on my cyr wheel inserts that I make (aka: roue cyr):
Circus/Cyr Wheel
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Implementing delete in an NSTableView

I’ve seen many ways to implement delete in an NSTableView. Many are good. Many hardcode references to something they shouldn’t, and those are bad. Here’s an easy way: Subclass NSTableView and override keyDown: - (void)keyDown:(NSEvent... [read more]
Cocoa, Coding
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LED Cyr Wheel: compass/accelerometer

The next step for my project is to add 3d position support by determining what angle and how fast the wheel is spinning at any given moment. The chip is in the wheel; I just... [read more]
Circus/Cyr Wheel

Flower Market

India, Flower Market Kolkata
Photography

Photography: India, Fruit delivery

India, Fruit delivery This guy didn’t look too happy, but I took his picture as he was walking by on the road. India, February 2014.
Photography
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LED Cyr Wheel: Longer video

Another slightly longer video from last weekend. I have about 3 or so hours on it, and it seems to be holding up well!
Circus/Cyr Wheel
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LED Cyr Wheel v2: Test Video

Some quick test footage from last week; I used the wheel for the first time last Friday for an event put on at the Exploratorium by Velocity Circus. It works AWESOME!   EDIT (2/24/15). Check... [read more]
Circus/Cyr Wheel

(c) 2008-2018 Corbin Dunn

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