Blog
A New Kind of Teleoperation Assistance Interface to Appear at IROS 2024
Both the code and paper on our new pointing-based online teloperation assistance interface are available now, with more material to come before October.
Calculator for DIY Energy Gels and Sports Nutrition
I updated my DIY energy gel calculator to allow for mixing and matching a variety of ingredients. You can target a particular sugar-type ratio and the calculator will figure out what amounts to use for you. If you want an idea of how much water to add so it won’t hurt your stomach, the calculator also shows the concentration (or osmolalilty) of your mix. I’ve included cliff notes on the science behind the calculator for the curious.
The Drumheller Marathon: Seattle's Newest and USA's Smallest
Four runners became the first Drumheller Marathoners at this year’s race, joined by a record 21 half marathoners. Officially, 42 people ran 4382 laps around the fountain, and that doesn’t include laps from the many who didn’t register.
The course, which I measured again this year, becomes one of only three recognized marathons in Seattle, and the smallest footprint road marathon in the United States.
Put Cascade (Lane) on the map again
Posted originally as a Letter to the Editor at UW’s student newspaper.
If you walk from Red Square to Drumheller Fountain you’ll pass through a brief nominative void. Down the steps, there’s a stretch of undistinguished asphalt about 150 meters long. Looking at its heaved and cracked surface, you’d never know that 115 years prior, this was where the immense and appropriately-named “Cascade Fountain” poured down the slope into the basin now known as Drumheller Fountain.
When the Alaska-Yukon-Pacific Exposition ended, the “Cascades” and many buildings were dismantled. The beautiful formal gardens of Rainier Vista were maintained for several years by the Seattle Parks Department before returning to the University to become today’s open lawn. Save for its most important elements, Drumheller (née Geyser Basin) and the borrowed landscape of Rainier itself, the grandeur of the science quad is much diminished from its exhibition roots.
The university should name the stretch “Cascade Lane NE” for the long-gone fountain. It’ll be a simple, likely cost-free affair. The path is unsigned, and it can remain so. But on the web and for the next printings of campus maps, a small new label should appear.
Board of Regents, say the words: “Cascade Lane.”
It needn’t be a forever name, and it will be useful if only to discuss its eventual replacement. Some beneficent donor should take an interest in improving the Cascade Lane, perhaps fixing whatever causes the asphalt to bulge so much that the mounds are sometimes circled with spray chalk to warn pedestrians. Maybe they’ll help regrade the path to an ADA-compliant 5% slope so students of all abilities can enjoy the 20 cherry trees that surround it. With some thoughtful landscape work, they could remedy what the State Architectural Historian diagnosed as the Vista’s “low level of integrity.” They might be inspired by an elaborate design for all of these changes from 2008 when updates for pedestrian access to the UW Link station were being planned (which was only partially implemented).
We’ll all celebrate if a new name displaces Cascade. It can sidle up against that of Regent Joseph Drumheller, whose 1961 pledge funded the central fountain machinery. Until then, let’s cherish the brightest point in the path’s life, even if it was 115 years ago.
Tell a friend. Tell ASUW. Write a letter to The Daily. Cascade Lane.
Advice for Using 3D Mice with Robots to Appear at HRI 2024
We wrote a short paper on our experience using 3D mice to control robot manipulators. It’s a useful resource, but you don’t have to take my word for it.
I initially understood how to make the device usable while working at NVIDIA, but the code I developed there is tied to the Isaac ecosystem. This paper’s implementation is ROS-ready. Once you understand their limitations, 3D mice are pretty handy. They’re full 6DOF control in a cheap, widely available, broadly compatible, and mechanically robust package. Every roboticist working on manipulation should keep one around.
A Guide to Transit-Oriented Running in Seattle
Originally posted on The Urbanist.
Transit is a marginal consideration, if it’s one at all, for most runners. The median group run in the U.S. meets at a local eatery and runs a loop in a park, a format which works on many levels. Parks are beautiful, safe and spacious, removed from the noise and danger of traffic. Anchoring the whole route on a local establishment makes it easy to get food after, and there’s usually enough parking around for all who might drive in. A convenient bus stop can reduce the need for parking, and transit-spurred street improvements might make it more pleasant to venture out around the park, but these factors are rarely decisive for the casual “brunch runner” or even for larger running clubs.
Great transit — a line with high frequency service and well-located stops — unlocks totally new ways of running through the city. Transit can take you to and from a run, but only great transit makes it painless to get to and from points along the run. Instead of anchoring a loop at a particular stop, it lets you run point-to-point between stops so you can see more for the same mileage. Great transit also makes it possible to include alternative start or end points at stops along the way to break up routes and maintain accessibility for more runners. All the better if you happen to take the same line to reach the start, as you’ll have a one seat ride home after.
Transit-oriented running already works in Seattle. It has for years. But there is still some art to crafting routes through the urban thicket. For inspiration, I’ve gathered some of my experiences from runs through the city over the past months.
Capitol Hill, Arboretum, Volunteer Park, Westlake, Elliot Bay Trail (15 miles)
This route is a bundle of three routes, each starting and ending at a light rail station. It might seem like a logistical stretch, but Link stations make great rally points. Just be sure to pick specific landmarks, like a sculpture or a station exit, to meet around.
- Capitol Hill – Arboretum Loop (6 miles)
- Capitol Hill -> Volunteer Park -> Westlake Station (4 miles)
- Westlake Station – Elliot Bay Trail out and back (5 miles)
Yes, the climb up Capitol Hill is an ask (at least until new RapidRide service arrives) but the Arboretum is worth the trek. As we slogged up Madison together one October morning, Ellis Michael, a Capitol Hill resident and frequent running compatriot, pointed out that “if you were out trail running, anywhere around Seattle, this climb would be nothing.” Runners not in the urban summiting mood can just as easily skip the first leg. The final stint from Westlake doubles as a great “first-run” for a new runner or a visitor; the span of parks along the waterfront is flat and easily shortened, plus it’s easy to grab a selfie with the market sign along the way.
Rainier Beach -> Beacon Hill -> Chinatown/International District (6.6 mi)
South Seattle light rail runs are endlessly remixable. Our running group sometimes moves up to the Chief Sealth Trail to run along the power lines, and other times down to Rainier Avenue and to go through Columbia City center. If you keep to the route, you’ll get to enjoy the strongest section of Link station art, including gems like a giant shovel and the city’s largest lion (sculpture) pride. Runners can join at Beacon Hill and skip the hike up from Mount Baker station. Chinatown/International District is a top spot both for food and for trains and buses.
When I last ran this route with a club, I was struck by how, in just six miles, we experienced several distinct Seattles. “I don’t think I’ve ever even driven through here,” Stephen Spencer, a long-time Green Lake resident told me as we ran down Beacon Hill. If not for the run, we’d both have missed out — the sweeping view of the City and the Sound is great.
SoDo -> Tukwila via West Duwamish Greenbelt Trails (13.2 mi)
This improbable-seeming point-to-point from SoDo to Tukwila takes you through “Seattle’s largest contiguous forest” on the West Duwamish Greenbelt Trails. You can pop out to visit the Chinese garden next to South Seattle College, and you can take the new RapidRide H Line back to Downtown if you need to cut the run short. Otherwise you’ll pass through a smattering of small parks and with any luck, you’ll catch some RC enthusiasts racing at the North SeaTac RC track as you cut across to Tukwila.
I picked this route sight-unseen this autumn and was surprised at how nice an adventure it was. Some of the Greenbelt was overgrown, but it was uncanny to be on a forest trail for such a long time without leaving city limits. The bonus sights along the way added some variety to what otherwise looked like sprawl on the map. As Ellis summarized afterward, “It was cool running through a bunch of random places (like Greenbridge. Who’s ever heard of that?).”
There are several shorter West Seattle excursions which are also worth checking out. Water Taxi service makes it possible to run over from SoDo, take the full length of the Alki trail, then return to Downtown over the water for just short of nine miles. You can also start from SoDo, take the Duwamish Trail, and return through Georgetown.
Every runner an urbanist
Urban runners’ habits are intertwined with their city’s amenities and pedestrian infrastructure. Every run is a window into the city’s progress and problems. We cheer for new sidewalks or trail improvements in part because so many of us have been taken down by a root-heaved sidewalk at some point. And we all know the dread of having to find a restroom or water fountain in a time of need. Transportation is just another facet of the experience, albeit one which usually goes unremarked upon.
It’s worth describing transit-oriented running because we don’t question the ways in which running habits are shaped by infrastructure that favors cars. We’re lucky that Seattle affords us the chance to experience the alternative; running that goes further, that welcomes more people and that connects us with more of the city.