pppone

7 ms·

31.
Show HN: Flip Your Weather Around(weatherflip.com)
2 points by pppone 1y ago|0 comments
32.
Different Clocks(ianto-cannon.github.io)
243 points by pppone 1y ago|44 comments
33.
by pppone 1y ago
We've colocated many SPS30s with government reference stations, and the low cost sensor have always performed relatively well. But, more importantly for my use case, they are exceptionally inter-comparable.
34.
by pppone 1y ago
I used to run https://www.open-seneca.org/ . But, personally, it's nice to know the PM value whilst cooking, before going on a run, etc. Permits you to take informed decisions.
35.
by pppone 1y ago
I don't think it would. Data in these instances would have to be ignored. You can detrend for high humidities, but once water condenses, the only way round this would be to add a drying instrument.
36.
by pppone 1y ago
I've been running multiple Sensirion SPS30 PM sensors for years, and I'm honestly amazed how well they've held up. Particularly with respect to, within their spec'd error, how new/unused SPS30s report similar value
37.
Show HN: Historical GPX Wind Visualizer(github.com)
3 points by pppone 1y ago|0 comments
38.
The Vaccine Trust Project(thevaccinetrustproject.com)
3 points by pppone 1y ago|0 comments
39.
by pppone 1y ago
A really nice way of experiencing a hardware product! I wish we had done the same for our air quality monitor when we were operational. [0] [0] - https://www.open-seneca.org/
40.
by pppone 1y ago
Yes, and it is already happening in professional astronomy. For example, the "Antarctic Tianmu Plan" [0] have shown that you can successfully capture non-trailed images without using tracking mounts by using drift-scanning CCDs—ba
41.
Is Philosophy Still Useful in the Age of Science?(write.as)
5 points by pppone 1y ago|4 comments
42.
Cooking meat at Mach 3 [video](youtube.com)
3 points by pppone 1y ago|0 comments
43.
MicroObservatory Robotic Telescope Network(mo-www.cfa.harvard.edu)
2 points by pppone 1y ago|0 comments
44.
by pppone 1y ago
I really like the VS Code extension for sqliteview.app - [0]. It also offers an edit feature for a reasonable price, in my opinion. I'm curious if there are any competing editor alternatives. [0] - https://vscode.sqliteviewe
45.
by pppone 2y ago
A site to find the right weather for your next trip or relocation: https://weatherflip.com/ I'm looking for co-founders to explore monetization routes. Feel free to reach out.
46.
Mobile Air Quality Monitoring(maps.open-seneca.org)
2 points by pppone 2y ago|0 comments
47.
Air quality map of Kigali, Rwanda(maps.open-seneca.org)
23 points by pppone 2y ago|3 comments
48.
by pppone 2y ago
Yes!! Sorry - didn't see this message. If you're still interested, please apply here: https://forms.gle/sUd7J7xEMmbReJsg6
49.
by pppone 2y ago
They're new :). But they're mobile sensors - designed for bike mounting as opposed to permanent installation.
50.
Seeking New Home for 90 Mobile Air Quality Sensors
3 points by pppone 2y ago|5 comments
51.
by pppone 2y ago
+1 for mobile. I would use it primarily as a means to plan urban routes and cycle touring (I wouldn't be touring with my laptop :P)
52.
by pppone 2y ago
Looks really nice - congrats on the app :). I can't test it since I don't use iOS. But if you ever make an android or web browser version - happy to play :)
53.
by pppone 2y ago
Thank you for this. I personally appreciate the easy to download GPX for my Wahoo. For reference, I've been using [0] to get around the city since Google Maps sucks here. I also really like the routes suggested by [1], but their mob
54.
by pppone 4y ago
At volume, the SPS30 gets down to ~$30 a piece. Their newest sensors (SEN5X) offer similar specs, and are about $25 per single unit, or $15 a piece at volume for the cheapest variant. The more expensive variant include integrated T/RH
55.
by pppone 4y ago
Sadly not yet. Since this is more of a voluntary commitment amongst my friends and I (we're in the process of finishing our PhDs), we lack the human-power to take the product to market at the moment.
56.
by pppone 4y ago
I would recommend checking out the AQ-SPEC program [1]. They do quite comprehensive tests on low-cost air quality sensors. My side project with a few friends [2] chose to use the Sensirion SPS30 [3] for our portable PM2.5 monitor. As ment