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.

It would be great to have the option to select a specific region or continent; right now, it searches the entire globe.

Yes!! Sorry - didn't see this message. If you're still interested, please apply here: https://forms.gle/sUd7J7xEMmbReJsg6

They're new :). But they're mobile sensors - designed for bike mounting as opposed to permanent installation.

Understood, thanks for the reply! Good luck with the rehoming.

+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)

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 mobile app is super buggy.

[0] - https://cyclers.app/

[1] - https://www.cyclestreets.net/

[0] looked like it would be great, but every time I select an origin point, it just shows a bunch of plans which get in the way of the route I am trying to build.

So far, every planner I have tried from this thread has just been frustrating in one way or another. It seems very hard for most to understand things like road+MTB in one ride or that the map shows that the road doesn't go through, but I can simply walk through a gate that a car can't.

> [0] - https://cyclers.app/

This looks interesting and the mobile app seems well made, I like that it suggests multiple routes. Currently I just use Google Maps and it sucks here as well.

hi - if you like the routes suggested by 1, try https://cyclema.ps/hello - disclaimer, i'm part of the team behind it.

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 :)

thank you!

As a cyclist, I would never plan routes on a tiny phone screen with a crappy UI. I would always plan on a computer and then use the phone to keep me on track.

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 mentioned by others, it's a bit more expensive than the PMS5003 used by AirGradient, but we preferred its documentation, company reputation, and form factor at the time of choosing (2019). The PMS5003 is perfectly capable, and has demonstrated good success with many projects/companies using the sensor (e.g. PurpleAir). However, a quick search suggests there are some issues with a recent batch of these sensors [4].

[1]: https://www.aqmd.gov/aq-spec/sensors

[2]: https://www.open-seneca.org/

[3]: https://sensirion.com/products/catalog/SPS30/

[4]: https://community.purpleair.com/t/new-version-of-plantower-p...

This resource is amazing.

I bought a Dylos DC1700-PM a while back for around $400; interesting to see how the lab test shows it producing varying data at 65%+ humidity (I live in a fairly humid climate and that perhaps contributes to why I see large shifts in readings throughout the day).

Is there a good, sub-$3000 meter that is accurate, 'just works', and requires little to no maintenance?

Ooof based on the aq-spec summaries... None of the gas sensors are particularly good. And the best ones are thousands of dollars..

That program is excellent! I purchased an AtmotubePro for PM2.5 measuring, and their testing and confirming it uses and SP30 makes me much more confident in it's readings.

It's a shame its does not seem to do CO2 only a compound measure of VOC gases. It seems only the Atmo Cube has CO2 measures.

Your site does not appear to have pricing for your kit based on brief browsing.

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.

They are about $50 from my search which is about 5x more than the plantower pm2.5 sensors. There is a big difference in documentation and that issue with the new MCU on the plantower units is concerning since they all have the same markings and housing when purchased.

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 monitoring, which is very handy for humidity corrections for this type of PM2.5 sensing.