cfastie 299 research notes and 550 wiki edits | Joined about 6 years ago | Admin

The ecology and history of forests and landscapes, and new ways to see these things. High-resolution stitched images of vegetation, including low elevation aerial photography and multispectral imaging. Design and distribution of 3D printed aerial photography rigs and microcontroller gadgets via the KAPtery. Tweeting these things.

My posts on these topics:


4 questions asked

24 answers posted

75 activities posted

1 activities attempted





RV SensorShip V

by cfastie 4 months ago | 5 | 715 views | 5


What would you do with SensorShip?

by cfastie 5 months ago | 1 | 246 views | 3


Extra Super Volatile

by cfastie 6 months ago | 2 | 206 views | 4


Nano particle monitoring

by cfastie 6 months ago | 7 | 690 views | 7


Logging firewood

by cfastie 8 months ago | 0 | 154 views | 2


Fun with u-blox

by cfastie 8 months ago | 0 | 117 views | 1



DFRobot TDS sensor first look

by cfastie 10 months ago | 2 | 567 views | 1


Installing the water-level monitor

by cfastie about 1 year ago | 0 | 325 views | 5


Assembling a Mini Pearl Pro Logger

by cfastie about 1 year ago | 0 | 314 views | 2


Mounting and deploying a Mini Pearl Logger

by cfastie about 1 year ago | 1 | 220 views | 2


Low-power timer upgrade

by cfastie about 1 year ago | 0 | 487 views | 2


Real time and temperature

by cfastie over 1 year ago | 6 | 1,033 views | 2


How to make a low power timer

by cfastie over 1 year ago | 1 | 476 views | 2


A DIY low power timer

by cfastie over 1 year ago | 1 | 979 views | 1


New data loggers for long-term logging

by cfastie over 1 year ago | 0 | 392 views | 2



Public Lab's Big Red Christmas Balls

by cfastie over 1 year ago | 1 | 154 views | 0



Memory of Feathers

by cfastie over 1 year ago | 1 | 211 views | 1


Longer Mini Pearl logging

by cfastie over 1 year ago | 1 | 347 views | 1


Will an Arduino measure water depth?

by cfastie over 1 year ago | 0 | 1,748 views | 1


Putting sensor data to work

by cfastie over 1 year ago | 1 | 360 views | 1


Yule logging

by cfastie over 1 year ago | 9 | 503 views | 3


Choose a camera for aerial photography

by liz about 2 years ago | 2 | 248 views | 1

Image from [Ebay seller Goodwill Maine](http://www.ebay.com/usr/goodwill-maine?trksid=p2047675....

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What goes into choosing a topic name?

by liz over 2 years ago | 2 | 141 views | 3

_above: sketch of figuring out how to organize "air" into a research area, and which methods are ...

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I am getting very low NDVI values.

Accepted

Anice asked about 5 months ago

Answers

DIY conductivity Sensors

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roberts_ecofarm asked about 7 months ago

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NDVI Numerical Values

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AgtechMan asked about 8 months ago

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answered on Sep 28, 2018 0

answered on Sep 28, 2018 0

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What are ways to monitor algae blooms?

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stevie asked about 9 months ago

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answered on Aug 15, 2018 0

answered on Aug 14, 2018 1

answered on Aug 14, 2018 1

answered on Feb 15, 2019 1

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Best low cost camera for indoor plants?

DrC asked about 10 months ago

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How to design scientific experiments?

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niklasjordan asked about 12 months ago

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Calculating NDVI - using PiNoIR camera and blue filter

JLJ asked about about 1 year ago

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answered on Apr 09, 2018 0

answered on Apr 10, 2018 0

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Why do the plant colors look the way they do?

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jenhu asked about about 1 year ago

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Spectral Range of Lens?

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RexToother asked about about 1 year ago

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what data-logger will work with my portable HCHO meter?

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nshapiro asked about about 1 year ago

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answered on Mar 28, 2018 1

answered on Apr 10, 2018 1

answered on Apr 11, 2018 1

answered on Apr 11, 2018 1

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Quantitative analysis of wood moisture

MarcioPamplona asked about about 1 year ago

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answered on Mar 18, 2018 2

answered on Mar 18, 2018 2

answered on Mar 18, 2018 2

answered on Mar 19, 2018 3

answered on Mar 19, 2018 0

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600 year old cedar tree - Infragram

Randall asked about about 1 year ago

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Modified TDS sensor as Conductivity Sensor?

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MadTinker asked about about 1 year ago

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answered on Mar 10, 2018 1

answered on Mar 11, 2018 0

answered on Mar 20, 2018 1

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View these maps at MapKnitter.org »

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Comments

Comment Last activity Moderation
" Marking your kite or balloon line is a very good way to do this. It is a bit of a chore to do it, but maybe easier than building a data logger or ..." | Read more » about 4 hours ago
" Enter, Inventor, Mentor " | Read more » 7 days ago
" That's a good idea. Maybe someone has figured out good values for blue and red. " | Read more » 8 days ago
" The link was finally fixed on May 16, 2019 when the view count was 1005. " | Read more » 8 days ago
" The NDVI result will be the same whether you use one or more layers of filter. Using two layers reduces the amount of light reaching the sensor tw..." | Read more » 9 days ago
"The specs for the TPL-5110 timer IC say it can time intervals up to 7200 seconds (2 hours). It seems unlikely that it could be extended beyond that..." | Read more » 10 days ago
" I just noticed that at least some of the 2000 era Olympus Camedia cameras did not have an effective IR cut filter installed. For normal photograph..." | Read more » 11 days ago
"The focal length of the lens depends on your goals, the area you want to cover, the elevation of the drone, how much distortion (fish eye) you can ..." | Read more » 13 days ago
"The Olympus CAMEDIA C-3040 is a nineteen year old model with a 3 MP sensor. It has a larger sensor than a GoPro, but the image quality will be very..." | Read more » 15 days ago
"According to the link at your wiki the RGB LEDs are rated for 2 to 3.2 volts. Your instructions for connecting the LED indicate connecting the LED ..." | Read more » 26 days ago
"Hi tahnok, Those inexpensive anemometers seems to be missing an important feature of the expensive Kestrel and other fancy anemometers. They do no..." | Read more » about 1 month ago
"The standard (last generation) Arduinos are circuit boards with the ATmega 328p microcontroller chip on them. A common hacker exercise eight years ..." | Read more » about 1 month ago
" More clarification on the display: For a battery powered logger, you could use an e-paper (e-ink) display which retains the image after it has bee..." | Read more » about 2 months ago
"I'm glad this might help. One clarification to my comment above: Adding a display to the logger works best if the logger is plugged into the wall (..." | Read more » about 2 months ago
"It is quite easy to build the environmental data logger you describe for $15. All of the parts for a Mini Pearl Logger can be ordered from eBay for..." | Read more » about 2 months ago
"Hi jeffalk, Thanks for pointing out that the PM10 index includes all particles smaller than 10µm. If that is true, you are correct that PM10 shoul..." | Read more » about 2 months ago
"If a device based on a Plantower sensor includes hardware that allows either live numerical display or data logging, it can be a very useful tool. ..." | Read more » about 2 months ago
" Writing data to eeprom will work with the limitations you outline. Adding a microSD card module and 128 MB SD card costs less than $2.00. Adding..." | Read more » about 2 months ago
"Thanks, I have pinged the editor. The views on this research note have doubled since December. I wonder what they would be if the link had been co..." | Read more » about 2 months ago
" I just noticed that Limor Fried wrote an article for Make Magazine in January citing this research note and using one of the images. An editor ask..." | Read more » about 2 months ago
"A full spectrum camera is one that has been converted to capture NIR by removing the IR cut filter. This filter which is present in all standard ca..." | Read more » 2 months ago
"I don' t know what a "dedicated IR camera" is. You can use an appropriate red filter on a full spectrum camera to capture mostly NIR in the blue ch..." | Read more » 2 months ago
" A red filter used to convert a full spectrum camera (IR cut filter removed) to an NDVI camera must pass red light and NIR light but no blue light...." | Read more » 2 months ago
"Subtracting the blue channel from the red channel is a good first step for correcting for contamination of the red channel with NIR. With one parti..." | Read more » 3 months ago






























cfastie was awarded the Basic Barnstar by warren for their work published in Superblue.


cfastie was awarded the Basic Barnstar by warren for their work published in Graze anatomy.


cfastie was awarded the Basic Barnstar by liz for their work published in Holiday Beverage Whodunit.


cfastie was awarded the Basic Barnstar by stevie for their work published in Nano particle monitoring.


cfastie was awarded the Basic Barnstar by Elidacanup for their work published in Broadening.


cfastie was awarded the Basic Barnstar by david-days for their work published in Compost is hot, says Riffle.


cfastie was awarded the Basic Barnstar by academicfora for their work published in A standalone aerial sensor pod.


cfastie was awarded the Empiricism Barnstar by warren for their work published in Grating angle.


cfastie was awarded the Empiricism Barnstar by xose for their work published in Real time and temperature.


cfastie was awarded the Photo Documentation Barnstar by warren for their work published in A DIY low power timer.


cfastie was awarded the Photo Documentation Barnstar by Hudonnoodles for their work published in Spherical KAP over Cocodrie.


cfastie was awarded the Photo Documentation Barnstar by stevie for their work published in NE Organizers Summit.


cfastie was awarded the Photo Documentation Barnstar by stevie for their work published in LEAFFEST 2014 accounting.


cfastie was awarded the Photo Documentation Barnstar by stevie for their work published in Public Lab Organizers Summit, 2014.


cfastie was awarded the Photo Documentation Barnstar by stevie for their work published in Putting sensor data to work.


cfastie was awarded the Photo Documentation Barnstar by todgobblins for their work published in Soaring Riffle.


cfastie was awarded the Video Documentation Barnstar by warren for their work published in SNOWFEST the Movie.


cfastie was awarded the Video Documentation Barnstar by mathew for their work published in Making the aluminum frame of an aerial camera rig (video).



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