Discover and read the best of Twitter Threads about #CRbox
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#crbox designed for travel. Packs into a suitcase with room for clothes and gives (estimated) 200-350 cfm cadr (raw is 632 cfm) Assembles and packs in < 5 mins. No tape. At 350 cfm it’s loud. But can easily turn down. Can be powered by 12v usbc. Assembly video next 
Assembly video for small CR box for travel. Total assembly time < 5 mins.
Lots of inspiration from @Mw_ottawa @ee_kelsey @CRBoxKits @robwiss @cleanairkits and multiple others.
This is a compendium thread of all my builds where I actually explain with pictures what I did 😆. Let’s start with the easiest, the most essential version of a PC Fan mini #crbox
Same basic mini CR Box idea but using HEPAs
The easiest Air and Light Panel directions with lots of video and pix #ALPanel
As we enter a phase of folks making mini DIY CRBoxes with stacked series fans, it would be nice to get some clarity on performance. The primary source used for putting spacers in-between for “performance” is one Noctua white paper, with one sentence about it and zero metrics: 🧵
It’s not a great sentence. “Directly towards each other” implies opposition, yet why would anyone do that, prob just bad writing. “Reduced aero-acoustical performance” is very vague, and possibly only about sound level. @DavidElfstrom is there a better resource for this info?
Of course we want the best performance we can get. But adding spacers makes a mini not so mini, so it has to be truly justifiable. If there’s no CFM difference I wouldn’t do it. Noctua are the quietest fans so they might be focused on noise primarily. @JimRosenthal4 @robwiss
Ok here’s Fandelier 3 in action!
I’m showing off the music sync and the new wave-activated table lighting. The fans were simply not enough light. Fixed it! #crbox @CorsIAQ @DUALIPA
Clean air eating, well lit table, and some disco beats. 2023 turning out just fine lol #kraken
I’m showing off the music sync and the new wave-activated table lighting. The fans were simply not enough light. Fixed it! #crbox @CorsIAQ @DUALIPA
Clean air eating, well lit table, and some disco beats. 2023 turning out just fine lol #kraken
Some stills. It’s so quiet, 41db, I don’t even hear it above the ringing in my ears from blasting Dua. The warm white LEDs throw a ton of light; it’s also dimmable via hand wave
The No COVID Fandelier 2!
Smaller bottom filter aim fans 45° down so they light the table not the wall. More chandelier-like. Square, so good for sq/round tables. Figured out “warm white” which is nice.
12 fans, 660 cfm raw, 290 CADR. 2’x2’ top Filtrete, 16”x16” bottom #crbox
Smaller bottom filter aim fans 45° down so they light the table not the wall. More chandelier-like. Square, so good for sq/round tables. Figured out “warm white” which is nice.
12 fans, 660 cfm raw, 290 CADR. 2’x2’ top Filtrete, 16”x16” bottom #crbox
Some stills n build pix. Song is @radiohead’s Everything in it’s Right Place. Again it’s a mix of fans so not a final design, just a first shot at my “different sizes” idea to get light onto the table
Covered the edge of the top filter with a strip of white gaffers tape and <chef’s kiss>. White wire coming soon for finishing touch
The No COVID Chandelier is HERE!
Just in time for Thanksgiving
18 fans, 990cfm raw, 2x 14x30 @3M Filtretes. 46db. Cleans the aerosols straight from up the table, spreads clean air in 360 directions at all the guests. #crbox
@yodelodwho @robwiss @Trematomus @mrlighttouch
Just in time for Thanksgiving
18 fans, 990cfm raw, 2x 14x30 @3M Filtretes. 46db. Cleans the aerosols straight from up the table, spreads clean air in 360 directions at all the guests. #crbox
@yodelodwho @robwiss @Trematomus @mrlighttouch
Fandelier has been coined by a few of you. I like it! The song is the inimitable Post Malone singing second half of his song Waiting For a Miracle which is just a freaking great vocal performance w/ best reverb ever. The view from dinner tonight, no guests just us:
“And everything done for the dead after they're dead is for the living
And everything done while they're dead goddammit, that's our decision
I kept my eyes closed, it was easy, now I see it with perfect vision
And everything done for the dead after they're dead is for the living
And everything done while they're dead goddammit, that's our decision
I kept my eyes closed, it was easy, now I see it with perfect vision
And everything done for the dead after they're dead is for the living
Fresh #crbuild @robwiss mega-sandwich style. 2x @3m Filtrete 14x30, 12 (new record?) fans total, 6 Asiahorse s001 on top and 2x Matrix 360 3-fan units for the sides. 660cfm raw. 2 controllers for visual fx, overkill. Finally you can eat without worries 😄#crbox #corsirosenthalbox
Some stills. I will try and post a complete parts list but I’d like to simplify it first, this was made from a bunch of stuff I had rather than tuned for ease of build
567 CADR, theoretical. 41db 1m from the filter face, 45db 1m out from the fan. Pretty quiet, quieter than 9 fan AL Panel because it has 3 more fans but double the filter surface area. Much less resistance so fans run quieter, more cadr.
Best news I've had all day.
It's official. Medical Officers of Health have a duty of care as Doctors, and can't hide behind the role as "public officials". They MUST follow the science, not the politicians.
And politicians have to use proper regulations, not just make decrees.
It's official. Medical Officers of Health have a duty of care as Doctors, and can't hide behind the role as "public officials". They MUST follow the science, not the politicians.
And politicians have to use proper regulations, not just make decrees.
If you or your kids/family got sick from airborne communicable diseases since Feb that could reasonably be attributed to increased infectivity from schools w/o adequate airborne protections...
Now you can do something about it. UCP & School boards are liable. Make them fix it.
Now you can do something about it. UCP & School boards are liable. Make them fix it.
Public Health is a collective responsibility.
Access to safe kid's education is a right. Safe workplaces are your right.
Advocate now, file complaints now, HRC filings now. They're uncomfortable losing their govt backing & may be amenable to improvement instead of liability.
Access to safe kid's education is a right. Safe workplaces are your right.
Advocate now, file complaints now, HRC filings now. They're uncomfortable losing their govt backing & may be amenable to improvement instead of liability.
My biggest Air and Light Panel, or AL Panel, in the style of CR Box natch. A mere 1.9” thick! 9 white RGB fans taped to a filtrete 14x14x1 merv 13. Fans are rated 495cfm on max, CADR unknown. No floorspace nec; hang it on the wall, tilted enough for good airflow. #ALPanel #CRBox
Now I’m sucking through the filter, but these fans we part of my previous CR Box that was pushing through the filters. Took a long time to clean the fans, can’t recommend pushing! Get the air cleaned before hitting the fans, always, even if it looks worse
In horizontal position it has a pretty sci-fi vibe. Reactor core / space ship vibez.
#CRBox joy continues to spread! Thank you @FOX61News for covering our cross campus initiative to immediately improve indoor air quality with these DIY air cleaners. A public health initiative FOR students BY students! @CorsIAQ @JimRosenthal4 @kprather88 @CleanAirCrewOrg @UConn
We at @uconnhealth and @UConn continue to support innovative, pragmatic solutions to real world public health problems! Our story and instructions for use courtesy of @CleanAirCrewOrg cleanaircrew.org/uconn/ @ARISense_AQ Generous financial support by Balvi - @VitalikButerin!
We were live every :30 of the hour from 7:30 am - 10:30am! Amazing work by such a great news team, our students, our Engineering team, our Medicine team, and Nursing!
A small #CorsiRosenthalBox for travel.
I think there are a few of us who want a small #CRbox that would fit in an airplane carryon for a hotel.
Here's a recent attempt.
It's small (8" by 8" by 8")! And can pack up very small. But it's loud.
I think there are a few of us who want a small #CRbox that would fit in an airplane carryon for a hotel.
Here's a recent attempt.
It's small (8" by 8" by 8")! And can pack up very small. But it's loud.
(Hint to Manufacturers: Price... $199-249, variable CADR rate 100 (<= 45 db @ 1meter) - 300 (<= 65 db @ 1meter), easily packs into "flat-ish" a 5-7L volume <= 10" on a side, assembly less than 3 minutes. ... oh, I can dream!)
Ingredients...
1x 200x60mm AC axial fan
acinfinity.com/component-cool…
4x Levoit H128 filters
levoit.com/products/lv-h1…
1x fan controller
acinfinity.com/component-cool… (on device is says 100 watts, not 50 watts)
1x 20x30 piece of foam board
a little bit of masking tape.
1x 200x60mm AC axial fan
acinfinity.com/component-cool…
4x Levoit H128 filters
levoit.com/products/lv-h1…
1x fan controller
acinfinity.com/component-cool… (on device is says 100 watts, not 50 watts)
1x 20x30 piece of foam board
a little bit of masking tape.
"Indoor Air Management of Airborne Pathogens: Lessons, Practices, and Innovations" eventbrite.com/e/indoor-air-m…
Workshop by @theNASEM focusing on the current state of knowledge ➡️ practical lessons learned. Session 1 starting now.
Live-tweets below
#EHMI #NASEM #EnviroHealthMatters
Workshop by @theNASEM focusing on the current state of knowledge ➡️ practical lessons learned. Session 1 starting now.
Live-tweets below
#EHMI #NASEM #EnviroHealthMatters
2/ @Don_Milton summarizes evidence that saliva PCR much better at catching COVID positive cases than PCR from nasal swabs.
3/ @Don_Milton: It's the *combination* of masks, ventilation, filtration that can dramatically reduce spread
Ok there’s been a lot of discussion about bad air in hotel rooms today. My orange microCR didn’t push enough air, but this MiniCR does. It’s a bit big for plane, but it packs flat. Question is: White/Pink or BLACK/PINK? #corsirosenthalbox #crbox #minicr @JimRosenthal4 @linseymarr
This is how I get battery power for my RGB CR Box builds. I’ve pinned it to the top of my profile because it’s used in all of them. This design allows for 7.5 watts of Fan and 7.5w of RGB, using USB-A. I have a more powerful USB-C design that allows for 36w fans and 15w rgb
