Are the schematics available? Looks great!
They will be!
I just put one on order :)!
Any idea when the PM sensors will be back in stock? I was thinking about grabbing one from elsewhere, but I imagine I need a cable pinout :)
Show HN: Enviro+ for Raspberry Pi – Environmental sensors
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Re: Show HN: Enviro+ for Raspberry Pi – Environmental sensors
#22Are the sensors pre-calibrated? I found that you can easily get cheap air quality sensors from China, the problem is that they could do better with calibration, which may require expensive (in relation to the sensor itself) equipment.
Re: Show HN: Enviro+ for Raspberry Pi – Environmental sensors
#23Earlier quoted context omitted.
Which sensor are you looking at? I'm sure it could run alongside the rest of Enviro+!
The most likely candidate is the TelAire T6613 [1]. Like most sensors in this price range, it reports data on I2C. [1] https://www.co2meter.com/collections/0-1-co2/products/t6613-...
Have you considered the much cheaper MH-Z19 or even the CCS811?
Doubt they're as capable or accurate but I'd be interested in hearing the reasons behind going with the pricier sensor if you've got time to share.
Re: Show HN: Enviro+ for Raspberry Pi – Environmental sensors
#24This is amazing. I'm going to add this to a fun weekend project to monitor air quality in my neighborhood.
Let us know how you get on!
I also passed it along to some contacts in the DC government. I told them this is exactly the kind of stuff they should deploy all over the city to get air quality, and just try it out since it's cheap enough to experiment with!
Re: Show HN: Enviro+ for Raspberry Pi – Environmental sensors
#25This is pretty cool. I’ve been looking to expand / replace PurpleAir with something that monitored gasses in addition to particulate matter.
I don’t think this is exactly what I want, since it has an LCD, but the sensors and board are really cool.
The only thing I wish this tracked was SO2.
I’m thinking i might have to make my own with Arduino. But this is very cool.
Re: Show HN: Enviro+ for Raspberry Pi – Environmental sensors
#26I'm working on a similar nodemcu based system that was originally proposed by Bruh Automation https://www.youtube.com/watch?v=jpjfVc-9IrQ later updated by digiblurDIY https://www.youtube.com/watch?v=9Yu57vjz7AY to use ESPhome https://esphome.io/ with no progamming. This looks interesting, but somehow it always seems wasteful to use full blown Linux servers for this stuff, so I'm dabbling in something smaller. :)
Sometimes a full Linux stack is a blessing but I totally understand where you're coming from. :-)
It's just that I keep finding cool hats/phats like this that feel that way. :) I'm wondering about the possibility of building a high latency Kubernetes cluster to make use of the excess compute of some of the Raspberry Pis.
The HomelabOS project https://gitlab.com/NickBusey/HomelabOS is something I have been looking at. It would be neat if I could use a handful of Pis across the house wasting cycles for something like that in a kubernetes style fashion.
One other since you're the poster and presumably work at Pimoroni, is there a preferred distributor in the US?
Re: Show HN: Enviro+ for Raspberry Pi – Environmental sensors
#27Is there a case option?
Obviously for the sensors to work they need to be exposed to air. We have a tutorial coming next week on how to make a low-cost enclosure for use outdoors - is that what you mean?
Yeah it'd be great if there was some kind of enclosure and holes / open spaces for the sensors.
Even better if there was a combined case which let you have the Raspberry Zero and this unit in one small thing.
Re: Show HN: Enviro+ for Raspberry Pi – Environmental sensors
#28Are the sensors pre-calibrated? I found that you can easily get cheap air quality sensors from China, the problem is that they could do better with calibration, which may require expensive (in relation to the sensor itself) equipment.
We have a calibration guide coming, of course it can't compare to high end equipment but it's plenty good enough for most people's uses!
Re: Show HN: Enviro+ for Raspberry Pi – Environmental sensors
#29I don't know anything about Pis, though I've seen one. How does this attach? Does it require soldering?
yes/no. it's sized to match the Pi Zero, which by default comes with no headers - so to add this board you'd need to add headers. But many vendors (including OP) offer them pre-soldered, which makes the hardware side "plug the top bit into the bottom bit".
(The zero is positioned as the "barest of bare-bones" to reach its price-point. Many vendors look for value-adds they can offer because there's not much margin on "barest of bare-bones". So "no headers" is one of the ways the manufacturing price was lowered, and "with headers" is one of the value-adds some vendors offer.)
So not to contradict anyone, just to be clear that you're looking for "pre-soldered" or "pre-soldered headers" if that convenience is worth the extra couple of bob to you - to avoid the disappointment of expecting one and receiving the other.
Re: Show HN: Enviro+ for Raspberry Pi – Environmental sensors
#30Earlier quoted context omitted.
Sometimes a full Linux stack is a blessing but I totally understand where you're coming from. :-)
It's just that I keep finding cool hats/phats like this that feel that way. :) I'm wondering about the possibility of building a high latency Kubernetes cluster to make use of the excess compute of some of the Raspberry Pis. The HomelabOS project https://gitlab.com/NickBusey/HomelabOS is something I have been looking at. It would be neat if I could use a handful of Pis across the house wasting cycles for something li…
I'm one of the co-founders of Pimoroni. :-)
Adafruit carry most of our range - hopefully they'll pick this up too soon!