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jeffalk commented on Evaluating low-cost optical dust sensors

kevinvivergy's referred to website is a great example of technology in the hands of techies. Th...

23 comments » almost 3 years ago

kevinvivergy New Contributor commented on Evaluating low-cost optical dust sensors

@warren @mathew thought this group might enjoy the ongoing testing of another set of low cost PM ...

23 comments » almost 3 years ago

Tbtouaki New Contributor commented on Modified camera with 25A red filter - NDVI needs calibration- Any Ideas?

Hi @Jakub I re-read lots and lots of posts here, but basically depending on the IR filter you us...

5 comments » almost 3 years ago

Jakub commented on Modified camera with 25A red filter - NDVI needs calibration- Any Ideas?

Hi! @Tbtouaki Could You explain, how You calibrated the WB on Your camera? Best regards, Jakub

5 comments » almost 3 years ago

mathew commented on Question: deep UV

I got a UV-C lightsource recently too- pretty cheap and more powerful than a toothbrush sterilize...

5 comments » almost 3 years ago

warren commented on Question: Is there a way to delete a set of spectra from the spectral work bench?

Have you seen the button to the right, as shown here?

6 comments » almost 3 years ago

warren commented on Oil testing kit: Assembly + Initial Calibration

Ethan - version 2 doesn't include a revamp of the capture interface -- just analysis. We've gone ...

5 comments » almost 3 years ago

mathew commented on Riffle: one-sided pcb w/ breakaway mounting tabs

I think two screws is fine. looks good!

10 comments » almost 3 years ago

donblair commented on Riffle: one-sided pcb w/ breakaway mounting tabs

whaddya think?

10 comments » almost 3 years ago

mathew commented on Riffle Water Bottle Enclosure: rubber stopper w/hole + silicone sealant: > 8 weeks!

I was worried about those o-rings... the silicone, while durable, is flexible and doesn't stick d...

6 comments » almost 3 years ago

donblair commented on Riffle Water Bottle Enclosure: rubber stopper w/hole + silicone sealant: > 8 weeks!

Yes -- at this point it might very well be possible to do temp, conductivity, and turbidity while...

6 comments » almost 3 years ago

tonyc commented on Riffle: one-sided pcb w/ breakaway mounting tabs

I'd say 2-hole minimum, three preferred. I don't see a constraint on board length, so I'd go that...

10 comments » almost 3 years ago

mathew commented on Riffle Water Bottle Enclosure: rubber stopper w/hole + silicone sealant: > 8 weeks!

also, right now this is, like my earlier stopper example, a sealant strategy without sensors to g...

6 comments » almost 3 years ago

tonyc commented on Riffle Water Bottle Enclosure: rubber stopper w/hole + silicone sealant: > 8 weeks!

I'm not seeing any bulk sources that get us a price break over the price on amazon, so I don't re...

6 comments » almost 3 years ago

warren commented on Riffle Water Bottle Enclosure: rubber stopper w/hole + silicone sealant: > 8 weeks!

Love it! Maybe we should offer these parts in the store for early experimenters? Just the stopper...

6 comments » almost 3 years ago

Mattador commented on Potentiostat Notes 5: How to make low cost electrodes.

I am looking forward to reading your note and i will tell you what results gives the gelled elect...

10 comments » almost 3 years ago

JSummers commented on Potentiostat Notes 5: How to make low cost electrodes.

That seems reasonable. I don't know whether the gel-ceramic junction will be an issue or not. M...

10 comments » almost 3 years ago

Mattador commented on Potentiostat Notes 5: How to make low cost electrodes.

I would like to try that in a few days. I read a few articles on the topic. Agarose or Agar are m...

10 comments » almost 3 years ago

JSummers commented on Potentiostat Notes 5: How to make low cost electrodes.

I never have tried this but I know that it is widely used. Do you have experience with this? Is...

10 comments » almost 3 years ago

Mattador commented on Potentiostat Notes 5: How to make low cost electrodes.

Hi. I am very impressed as well. I wonder if you ever tried to use a gelled electrolyte in order ...

10 comments » almost 3 years ago

Mattador commented on Potentiostat Notes 5: How to make low cost electrodes.

Hi. I am very impressed as well! I wonder if you ever tried to use a gelled KCl electrolyte in or...

10 comments » almost 3 years ago

donblair commented on Power to the SkyShield

Ah, might be fun to look into adjustable ones too, yeah ... these seem to be so cheap because the...

5 comments » almost 3 years ago

cfastie commented on Power to the SkyShield

Yikes, I hadn't seen the pre-built boost converter corner of ebay. That could be the source of al...

5 comments » almost 3 years ago

tomtobback New Contributor commented on why PM10count relates to P2 rather than P1?

hi @guolivar, thanks for the suggestions, i had a look at the ODIN and PACMAN and see that you us...

4 comments » almost 3 years ago

donblair commented on Power to the SkyShield

Seems like the cheapest boost option might be to find a pre-built boost circuit on ebay? http://...

5 comments » almost 3 years ago

patcoyle commented on Riffle Water Bottle Enclosure: rubber stopper w/hole + silicone sealant: > 8 weeks!

Nice results, real example – 8 weeks is non trivial.

6 comments » almost 3 years ago

cfastie commented on Turbidity sensor prototype

This looks very promising. There are a couple of controls that might add a lot to the interpreta...

7 comments » almost 3 years ago

mathew commented on Oil testing kit: Assembly + Initial Calibration

thanks for all the assembly notes. One note on the attenuator-- there are registration marks on t...

5 comments » almost 3 years ago

mathew commented on Turbidity sensor prototype

real clever thinking!

7 comments » almost 3 years ago

Cindy_ExCites commented on Oil testing kit Beta programme - Calibration notes

Ah, yes, that makes a lot of sense, thank you Ethan! I used the part which seemed to have the lea...

6 comments » almost 3 years ago

Light Aircraft Aerial Mapping Setup

by gonzoearth over 6 years ago | 5 | | 1

Tiny remote control

by cfastie over 6 years ago | 2 | | 1

AirQualityEgg sensor-box for real-time air column monitoring

by edborden New Contributor over 6 years ago | 0 | | 2

Prototype 'pufferfish' balloon from EcoHack

by Shannon over 6 years ago | 2 | | 2

Balloon Kite design and prototype

by valerie over 6 years ago | 0 | | 0

Balloon mapping kit tote bag graphics

by warren over 6 years ago | 0 | | 2

Balloon-kite sketches at EcoHack II

by warren over 6 years ago | 0 | | 2

Public Lab community newsletter 4.20.12

by Shannon over 6 years ago | 0 | | 2

SLO pre flight

by jl New Contributor over 6 years ago | 6 | | 1

High traffic stats and server issues recap

by warren over 6 years ago | 0 | | 2

Making tent bags for photopaper test

by megan over 6 years ago | 0 | | 0

Cell Phone Spectrophotometer

by mathew over 6 years ago | 0 | | 0

EPA Fracking Regulations To Be Implemented Soon

by Shannon over 6 years ago | 0 | | 2

Inviting others to join PLOTS

by warren over 6 years ago | 0 | | 0

Visible/IR mapping camera process

by cfastie over 6 years ago | 1 | | 0

Good shutter synchronization

by cfastie over 6 years ago | 4 | | 0

Erosion of civilisation, storm by storm

by neilh New Contributor over 6 years ago | 0 | | 0

PLOTS sitemap

by warren over 6 years ago | 0 | | 2

Video History of Balloons: 1944 US Navy

by liz over 6 years ago | 0 | | 2

Kite Balloon of R.H. Upson

by mathew over 6 years ago | 0 | | 2

barnstars

by liz over 6 years ago | 0 | | 0

Almost synchronous shutters

by cfastie over 6 years ago | 0 | | 0

Balloon kit tips

by natevw over 6 years ago | 1 | | 2




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