Walzr
walzr.com · Personal blog · on HN since 2024
Riley Walz's portfolio of playful software projects, such as Payphone Go, Bop Spotter, and tools tracking San Francisco parking enforcement.
What HN saysHN commenters enjoy the creator's quirky projects, browsing through them and noting that new projects come from the same author as earlier ones.
37HN people shared it
22linked it in comments
37stories submitted
5.4Kstory points
3 months agolast shared
2024people per year2026
Most-shared posts
- 1Bop Spotter4 people · 2.4K points · first shared 2024 · 385 comments on HN
- 2He reverse engineered SF's ticketing system to track officers in realtime4 people · 4 points · first shared 2025 · 1 comments on HN
- 3Homepage4 people · first shared 2025
- 4IMG_00013 people · 1.9K points · first shared 2024 · 290 comments on HN
- 5Find SF parking cops3 people · 852 points · first shared 2025 · 470 comments on HN
- 6Show HN: Weather Watching3 people · 94 points · first shared 2025 · 17 comments on HN
- 7Postal Arbitrage3 people · 8 points · first shared 2025 · discussion on HN
- 8A Bright HDR Image2 people · 21 points · first shared 2025 · 11 comments on HN
- 9About 10% of AMC movie showings sell zero tickets. This site finds them2 people · 20 points · first shared 2026 · 3 comments on HN
- 10Show HN: Papers from Today2 people · 9 points · first shared 2024 · 5 comments on HN
- 11Waffle House Index2 people · 5 points · first shared 2024 · 2 comments on HN
- 12San Francisco Identities2 people · 4 points · first shared 2025 · 1 comments on HN
- 13Lunches.fyi: Scraping corporate cafeteria menus and ranking the food2 people · 3 points · first shared 2026 · discussion on HN
- 14In Every Language2 people · 2 points · first shared 2026 · discussion on HN
- 15Payphone go2 people · first shared 2026
What HN people wrote when they linked it
nickvec · 2026-04-14
As an aside, the creator of this site (Riley Walz) has some other awesome projects I’d recommend checking out https://walzr.com
captn3m0 · 2026-03-06
https://walzr.com/payphone-go/?phone=592
My new favorite fishing story.
OJFord · 2026-03-06
https://walzr.com/payphone-go/?phone=1451
> Shout out to [...], I love you guys. Platonically.
gala8y · 2025-09-23
Yeah, slowly going through https://walzr.com/. Definitely not his first rodeo.
alexchantavy · 2025-09-23
Oh wow this is from the same author as https://walzr.com/bop-spotter -- love these projects
bryanrasmussen · 2025-07-04
from their site https://walzr.com/
they made a fake steakhouse real for one night, got Twitter to verify a fake candidate for congress, etc. etc.
all signs point to art project.
debesyla · 2025-07-04
I see this as an art project. (And technical exploration, because I wonder how did they manage to scrape Google.)
It's made by the dude that has a lot of similarly strange and technologically impressive projects: https://walzr.com/
adolph · 2025-09-23
Worth it for this jpeg:
https://walzr.com/HDR2.jpg
weinzierl · 2025-07-03
Condensing it for HN was harder than I thought because most of it makes only sense when you also see the images, so here is more like a summary of parts of the dialogue.
Prompted by this comment
https://news.ycombinator.com/item?id=44366753
I tried to geolocate the camera.
I uploaded a screenshot from
https://walzr.com/weather-watching
to ChatGPT and it said a lot of things but concluded with “New York City street corner in the East Village”.[1]
I find it utterly amazing that you can throw a random low-quality image at an LLM and it does not only pinpoint the city but also the quarter.
Good, but how to proceed from there? ChatGPT knows how street corners in the East Village look in general, but it does not know every building and every corner. Moreover, it has no access to Google Street View to help find a matching building. So this is kind of a dead end when we want a precise location.
How would a human approach this? From the image it is immediately clear that we have a T-shaped intersection. From the shadows we can conclude that the stem of the T runs east-west and the bar north-south. We see that the stem is a one-way street with cars going only from west to east. This immediately excludes all odd-numbered streets. There are buildings all around and no parks or water.
There are not many intersections in New York that fulfill all these criteria, but what if the area to search was much bigger? Could an LLM do that for us?
I asked ChatGPT for a bird’s eye view of…
aurmc · 2026-08-18
It was this one: https://walzr.com/sf-parking/
>This site only worked for 4 hours until the SFMTA cut the data source I was using. This data is a snapshot of how it looked on Sept. 25, 2025 at noon.
What a shame! Still such a cool idea!
puppykito · 2026-03-06
Honorable mention: https://walzr.com/payphone-go/?phone=1599
I don't know why but I find this person very cute with how excited they sound about the local library.
Will try to find some payphones myself.
bittercynic · 2026-03-06
I'm absolutely going hunting for some nearby payphones this weekend!
In the recording on this one [1] the caller states that the payphone is on the caltrain station platform, but on the map it's about 1000 feet from there. Searching the address on google maps correctly shows it at the station, though.
[1] https://walzr.com/payphone-go/?phone=398
citizenpaul · 2026-03-06
The recording left on this one is super weird and creepy like its from some ARG game which I guess is appropriate.
The next night we ate whale, the next night we ate whale.
https://walzr.com/payphone-go/?phone=592
Runner Up this one playing "Im at a payphone" song
https://walzr.com/payphone-go/?phone=576
xtiansimon · 2026-01-13
I believe it. There are a few more interesting projects at the site.
This is fun, https://walzr.com/weather-watching
MattSayar · 2025-04-19
Completely agree, I don't want this to disrupt the Bop Spotter
https://walzr.com/bop-spotter
radsquirrel · 2025-01-15
You’ll get a kick out of this if you haven’t already seen it - a collection of random slice of life videos uploaded during the time when iPhones had a built in “send to YouTube” button. So many fascinating moments that would otherwise be lost to time. https://walzr.com/IMG_0001
ChrisArchitect · 2024-10-10
A realtime Hurricane Milton Waffle Index map
https://walzr.com/waffle-house-index
(submittted by HNer https://news.ycombinator.com/item?id=41793716)
bradrn · 2024-09-30
Looks like the results are exported to a CSV file: https://walzr.com/bop-spotter/export
dvrp · 2026-03-13
See also: https://walzr.com/IMG_0001/
vanshg · 2025-09-23
Explained here: https://walzr.com/sf-parking/about/
rrrrrrrrrrrryan · 2025-09-23
k8sToGo · 2025-09-23
Explained here
https://walzr.com/sf-parking/about/