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donblair 651 research notes and wiki edits | Moderator



Joined over 5 years ago

Sync-mod for ambient background removal -- first tests

by donblair almost 2 years ago | 2 | 629 | 2

This is a quick follow-up to the idea posted [here](https://publiclab.org/notes/donblair/03-08-20...

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TTL Serial JPEG Cameras + microcontrollers

by donblair almost 2 years ago | 6 | 1,132 | 3

Just seeing @tonyc 's recent note on [using a Mobius camera for field time lapse](https://publicl...

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Removing ambient interference from turbidity measurements through signal modulation

by donblair almost 2 years ago | 6 | 2,097 | 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 about 2 years ago | 10 | 2,073 | 1

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

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Conductivity Sensing: Open Questions

by donblair about 2 years ago | 7 | 1,713 | 7

A lot of people are interested in measuring conductivity in liquids -- because it provides a u...

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Universal Hardware Registry?

by donblair about 2 years ago | 5 | 779 | 1

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

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

by donblair about 2 years ago | 16 | 1,686 | 2

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

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

by donblair about 2 years ago | 3 | 1,089 | 4

Thanks so much to everyone for all the fantastic comments on the earlier 'request for feedback...

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Random Bits: Atmel Low Power Libraries & RTC wakeup

by donblair about 2 years ago | 6 | 2,302 | 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 about 2 years ago | 3 | 1,765 | 1

[![Absorption_spectrum_of_liquid_water.png](//i.publiclab.org/system/images/photos/000/013/107/me...

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Riffle Beta Release: Feature Requests / Review?

by donblair about 2 years ago | 25 | 2,521 | 3

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

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Testing a Phant Data Repository on Cloud9

by donblair over 2 years ago | 1 | 1,027 | 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 over 2 years ago | 10 | 2,250 | 1

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

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Turbidity sensor prototype

by donblair over 2 years ago | 7 | 3,158 | 6

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 over 2 years ago | 6 | 2,770 | 3

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

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

by donblair over 2 years ago | 1 | 1,350 | 3

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

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Monongahela Monitoring Marathon - Part I

by donblair over 2 years ago | 1 | 1,057 | 1

Hello again! This is just a quick research note in an attempt to catch up with [John Keefe](ht...

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Suratá Visible -- Part I

by donblair over 2 years ago | 2 | 1,396 | 2

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

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Rubba Stoppaz

by donblair over 2 years ago | 8 | 2,727 | 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 over 2 years ago | 6 | 2,611 | 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 over 2 years ago | 1 | 2,264 | 1

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

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Wireless 001

by donblair over 2 years ago | 4 | 2,149 | 1

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

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Dock Test!

by donblair over 2 years ago | 0 | 1,836 | 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 over 2 years ago | 4 | 3,151 | 3

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

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The Riffle: DIY and Open Source

by mlamadrid about 1 year ago | 0 | 171 | 2

Article by [Mathew Lippincott][1] and [Don Blair][2] for [Community Science Forum: Water][3] T...

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Intended Purposes for Different Tools and Techniques

by gretchengehrke over 2 years ago | 6 | 2,070 | 11

(Note: have a better name for this? Please suggest it!) Environmental data can be used fo...

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Ideas on opening "open hardware"

by liz over 2 years ago | 8 | 1,190 | 4

Hey folks, this is a line of thought that needs your input! Legend has it that two LEAFFES...

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SkyShield v2 beta

by cfastie over 2 years ago | 3 | 2,008 | 0

Above: all the 3D printed parts for five Saturn V Rigs. . The next version of the SkyShie...

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Saturn V and SkyShield beta

by cfastie over 2 years ago | 3 | 2,576 | 3

Image above: The SkyShield on an Arduino Nano. . At iFARM we [flew the new Saturn V Rig w...

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The Water Hackathon Report

by stevie about 3 years ago | 0 | 2,250 | 0

There were several water events that were held over last week in New Orleans that encompassed...

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How does Riffle compatible with 5V sensors?

Accepted

shanlter asked about 4 months ago

Answers by donblair

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