Joe Z
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underflow.dev
Joe Z
@underflow.dev
110 followers 120 following 140 posts
5 decades of Colorado, writing software for astronomy, ecology, precision timing, medical devices, and hardware integration. Opinions are my own.
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underflow.dev
If you see this, skeet an archer.
Archer the border collie mix dog, stretched out on the bed towards the camera, with a lamp in the background.
January 12, 2026 at 12:16 AM
underflow.dev
Did the nighthawk/bitterbrush trail west of Lyons, CO. Warm, with lots of fallen trees up top from the last windstorm. #hiking #colorado
Sign for the nighthawk trail west of Lyons, CO A small group of deer on the trail. The top of the trail, with the twin sisters and Indian peaks in the distance. A fallen tree, with the rootball sticking out of the soil.
January 5, 2026 at 1:16 AM
underflow.dev
Holly, my lovable jerk of a herding rescue.
A border Aussie dog eagerly facing the camera.
January 1, 2026 at 3:00 PM
underflow.dev
Baking progress.
Dough made into rolls and rising, carrot cake cooling before being frosted.
December 25, 2025 at 4:36 PM
underflow.dev
Future carrot cake.
Ingredients for carrot cake, including shredded carrots, pineapple, cinnamon, vanilla, oil, flour, and sugar.
December 25, 2025 at 3:05 PM
underflow.dev
About to hand my work over to the bread robot.
Mixture of ingredients for bread, including flour, water, butter, brown sugar, and yeast.
December 25, 2025 at 2:22 PM
underflow.dev
And do surveillance cameras reduce crime? Eh, not really: www.comparitech.com/vpn-privacy/...
December 24, 2025 at 6:09 PM
underflow.dev
It’s a talent.
Border Aussie named Holly stretched out on a couch.
November 28, 2025 at 3:18 AM
underflow.dev
Here are Holly and Archer waiting for @mandy-moodles.bsky.social to get off work. Spot the herd dog #dog
Black and white border collie mixes, sitting on concrete stairs, with sidewalks and locked bikes in the background. Black and white border collie mixes, sitting on concrete stairs, with sidewalks and locked bikes in the background. Holly continues to stare into o the distance while Archer casually looks around. Black and white border collie mixes, sitting on concrete stairs, with sidewalks and locked bikes in the background. Holly’s gaze still attempting to burn through the brick. Black and white border collie mixes, sitting on concrete stairs, with sidewalks and locked bikes in the background. Archer back to looking in the same direction as Holly. Holly maintains her vigil.
November 11, 2025 at 11:17 PM
underflow.dev
Snow in the high country once again. Archer approves. #dog
November 3, 2025 at 5:29 PM
underflow.dev
A robber jay dropped by on today’s hike. #bird
A gray female robber jay perched on a dry snag of wood, looking to see what food I might share.
November 3, 2025 at 5:55 AM
underflow.dev
A little hike past the sunflowers west of Longmont
An outdoor picture of a close gate decorated with flowers. On the right in the background is a silo painted with sunflowers.
October 24, 2025 at 6:06 PM
underflow.dev
The Cinnamon Roll Project, part 2. Milk rather than water, no powdered milk. Shorter cut rolls, so less pan overflow. Less overnight rise, good spring in the oven.
Unbaked cinnamon rolls in two round pans, and some untied shoes. Baked cinnamon rolls now filling two pans. Shoes still untied.
October 18, 2025 at 2:52 PM
underflow.dev
The Cinnamon Roll Project.
Unbaked cinnamon rolls in a 9 inch round pan. Also a rolling pin and dough scraper. Baked cinnamon rolls in a 9 inch round pan. Also a rolling pin and dough scraper.
October 12, 2025 at 3:46 PM
underflow.dev
This evening’s view of the Longmont Climbing Collective building. #rainbow #climbing
The Longmont Climbing Collective building, backed by a rainbow and high level clouds.
September 8, 2025 at 5:44 AM
underflow.dev
Not for everyone, but it holds up well 35 years later.
The cover art for Steve Vai’s 1990 album Passion and Warfare.
September 8, 2025 at 4:55 AM
underflow.dev
Waiting for the throw..
Archer the mixed border collie waiting for tennis ball to be thrown. The sunset in the background over the reservoir.
August 29, 2025 at 1:46 AM
underflow.dev
DDG has an interesting alternative suggestion.
A search result from DuckDuckGo. It shows a partial typing of “winter’s tale he”. The suggested results are “winter’s tale Hermione X Bucky fanfic”, and “Winters tale Helprin”.
August 9, 2025 at 6:39 PM
underflow.dev
Every baker should have a book like this floating around the kitchen. Full of recipes you would take to that high school potluck in 1995. My favorite carrot cake recipe. #baking
A yellow black plastic bound recipe book. The cover says choice hotels international with a drawing of a dinosaur combine with a suitcase. Underneath the dinosaur it says Choiceasaurus, Dino-mite recipes, followed by our commitment… Your choice 1993 A carrot cake recipe from the book, with notes from the baker. The recipe is one and 1/2 cups of flour, one cup of sugar, half a teaspoon of salt, 2/3 cup of salad oil, 1 teaspoon of soda, two eggs, 1 teaspoon of baking powder, one cup of shredded carrots, 1 teaspoon of cinnamon, 1 teaspoon of vanilla, half a cup of crushed pineapple with syrup. Mix until moistened about two minutes and pour in a 9 x 9” pan. This can be doubled for a larger cake. Bake at 350 degrees for 35 minutes.
August 2, 2025 at 2:41 AM
underflow.dev
Union Reservoir
A white sign with green text. It says attention dog guardians. Please pick up after your dogs. Attention dogs, grrrr, bark woof, good dog. At the bottom and white text on a green background it says thank you
August 1, 2025 at 1:36 AM
underflow.dev
Well, that looks familiar.
@mandy-moodles and Archer the border collie cross goofing around on the couch.
July 19, 2025 at 11:05 PM
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Short post meeting break in the backyard. @mandy-moodles.bsky.social ‘s garden is amazing this year.
A red Flagstone pathway surrounded by stonecrop and lemon verbena
June 26, 2025 at 9:09 PM
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Archer, the mighty rabbit hunter #dogs
June 25, 2025 at 2:58 AM
underflow.dev
Went in to work today. Nice view.
The flatirons in Boulder, covered by clouds and with the biotech building in the foreground
June 17, 2025 at 8:01 PM
underflow.dev
Just west of Longmont, with the flat irons in the background
Field of grass backed by a farmhouse, with the flat iron mountains in the background
June 14, 2025 at 2:38 PM