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donblair 601 research notes and wiki edits | Moderator


donblair was awarded the Basic Barnstar by warren for their work published in Preliminary Plymouth Plant Plume Ponderings.


donblair was awarded the Basic Barnstar by cfastie for their work published in Meter Stick REVA: Lights, Buzzers, Particulate Matter ... oh, my!.


donblair was awarded the Basic Barnstar by warren for their work published in How to download and analyze Landsat imagery.


donblair was awarded the Video Documentation Barnstar by stevie for their work published in Recap: Open Water Workshop, 7/12/14.


donblair was awarded the Basic Barnstar by gbathree for their work published in EPA's Advanced Monitoring Tech Demo Day.


donblair was awarded the Photo Documentation Barnstar by liz for their work published in Coqui BBv1.0.


donblair was awarded the Empiricism Barnstar by warren for their work published in Riffle Water Bottle Enclosure: rubber stopper w/hole + silicone sealant: > 8 weeks!.


donblair was awarded the Basic Barnstar by warren for their work published in Removing ambient interference from turbidity measurements through signal modulation.



Sync-mod for ambient background removal -- first tests

by donblair 4 months ago | 0 | 372 | 2

This is a quick follow-up to the idea posted here. The idea in that note was that by adding a pu...

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TTL Serial JPEG Cameras + microcontrollers

by donblair 4 months ago | 6 | 743 | 3

Just seeing @tonyc 's recent note on using a Mobius camera for field time lapse -- great stuff! ...

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Removing ambient interference from turbidity measurements through signal modulation

by donblair 5 months ago | 6 | 1,305 | 3

Turbidity is an optical measurement of suspended solids in solution -- a broadly useful water qua...

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Riffle 0.1.1 Debugging

by donblair 6 months ago | 10 | 1,368 | 1

Hi All, Just got back the latest version of the Riffle 0.1.1 board, nicely assembled by the kind...

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Conductivity Sensing: Open Questions

by donblair 7 months ago | 4 | 1,028 | 7

Design Goals A lot of people are interested in measuring conductivity in liquids -- because it p...

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Universal Hardware Registry?

by donblair 7 months ago | 5 | 609 | 1

Hi all! [WARNING: this idea is not fully thought through. Would love your thoughts!] Motivation...

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Riffle CT (Conductivity & Temp) Beta Design: Electronics, Enclosure, Probes, Data Collection

by donblair 7 months ago | 16 | 1,421 | 2

Hi All, For our "Beta Release" of the Riffle datalogger hardware, we're focusing on a particular...

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Riffle Beta Release: Feature Freeze this Friday! (12/11)

by donblair 8 months ago | 3 | 892 | 4

Thank you for the feedback! Thanks so much to everyone for all the fantastic comments on the ear...

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Random Bits: Atmel Low Power Libraries & RTC wakeup

by donblair 8 months ago | 6 | 1,666 | 1

Quick notes from the last several days -- sorry it'll be a bit of a ramble -- just trying to capt...

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Turbidity Notes: Absorption Spectrum of Liquid Water

by donblair 8 months ago | 3 | 1,417 | 1

Source: https://upload.wikimedia.org/wikipedia/commons/1/18/Absorption_spectrum_of_liquid_water...

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Riffle Beta Release: Feature Requests / Review?

by donblair 8 months ago | 25 | 1,893 | 3

Hi All! We're wrapping up a bunch of conversations about the design of the board, in order get a...

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Testing a Phant Data Repository on Cloud9

by donblair 9 months ago | 1 | 832 | 2

[Edit 11/8: an earlier title for this was "Your Own Data Repository on Cloud9" -- but I've since ...

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Riffle: one-sided pcb w/ breakaway mounting tabs

by donblair 9 months ago | 10 | 1,790 | 1

all surface mount components are on one side length of riffle board is now 100 mm (3.94 inches) ...

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Turbidity sensor prototype

by donblair 9 months ago | 4 | 2,249 | 5

Surrounded by friends who were putting together Dracula, Zombie, and etc equipment, I decided to:...

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

by donblair 9 months ago | 6 | 2,036 | 3

[photo credit: Liz Barry. Shocked cereal box credit: D'Ignazio family] We've been experimenting...

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Using a Cellular Modem to post directly to the web & track location

by donblair 9 months ago | 1 | 1,083 | 3

Hi Folks! More on this soon, but wanted to post a quick note on this code, in case it's helpful ...

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Monongahela Monitoring Marathon - Part I

by donblair 9 months ago | 1 | 887 | 1

Hello again! This is just a quick research note in an attempt to catch up with John Keefe's amaz...

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Suratá Visible -- Part I

by donblair 9 months ago | 2 | 1,167 | 2

Hallo! This is a long overdue first post on an amazing project that I participated in towards th...

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Rubba Stoppaz

by donblair 11 months ago | 8 | 2,415 | 3

Finally getting around to testing @mathew 's clever ideas around sealing up plastic water bottles...

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Riffle: sensor board approach

by donblair 11 months ago | 6 | 2,388 | 3

One idea that came up in Colombia (and, really, in various forms earlier, at LEAFFEST and elsewhe...

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Riffle Datalogger: quick development snapshot

by donblair 11 months ago | 1 | 1,998 | 1

Background This is an attempt to take a quick snapshot of the Riffle open hardware water monitor...

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Wireless 001

by donblair 11 months ago | 4 | 1,854 | 1

[header image from dev.physicslab.org] Background A first pass on notes re: various options for...

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Dock Test!

by donblair 11 months ago | 0 | 1,505 | 6

Today Laura Perovich led Joe Goldbeck and me on an expedition to the Charles River to deploy a te...

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Turbidity 001

by donblair 11 months ago | 4 | 2,403 | 2

Just wanted to gather some useful materials around turbidity -- how it's usually assessed, and va...

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Riffle-328p version 0.96 :)

by donblair over 1 year ago | 5 | 2,819 | 3

Quick update on the latest design for the Riffle ... But first, a quick review: Several of us h...

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Riffle & Coqui Development Plan

by donblair over 1 year ago | 0 | 1,654 | 1

(This is just a sketch re: what the Coqui and Riffle are intended to do, and how to develop them ...

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Shallow note on depth

by donblair over 1 year ago | 10 | 1,164 | 0

This is just to hold some pics for now ... more deets later!

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"Less is more: The Role of Small Data in 21st Century Governance."

by donblair over 1 year ago | 2 | 2,387 | 2

A few months back, Diego Rafael Canabarro had graciously invited Catherine D'Ignazio, Jeff Warren...

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Coqui PCB + audio jack

by donblair almost 2 years ago | 0 | 1,321 | 0

https://github.com/OpenWaterProject/coqui

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Making a DIY conductivity probe from a water bottle and metal screws

by donblair almost 2 years ago | 6 | 3,893 | 2

Creating a conductivity probe:

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View these maps at MapKnitter.org »

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