cfastie 299 research notes and 550 wiki edits | Joined over 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

1269 comments posted

75 activities posted

1 activities attempted





Adafruit Feathers for datalogging

by cfastie over 1 year ago | 4 | 2,808 views | 1


Winds aloft: and a camera too

by cfastie over 1 year ago | 3 | 480 views | 1


Winds aloft: sensor overload

by cfastie over 1 year ago | 7 | 363 views | 1


Scenes from a LEAFFEST

by cfastie almost 2 years ago | 3 | 206 views | 0


LEAFFEST Aeropod flight

by cfastie almost 2 years ago | 0 | 264 views | 1


NASA Aeropod unboxing

by cfastie almost 2 years ago | 0 | 371 views | 2


Join us at LEAFFEST 2017

by cfastie almost 2 years ago | 4 | 448 views | 2


Mini Pearl Logger longer

by cfastie almost 2 years ago | 0 | 288 views | 1


Winds aloft: less noise

by cfastie almost 2 years ago | 7 | 444 views | 1


Assembling a SkyPod GPS logger

by cfastie almost 2 years ago | 0 | 385 views | 0


Winds aloft

by cfastie almost 2 years ago | 3 | 696 views | 2


Redstone Rig 2.0

by cfastie almost 2 years ago | 3 | 316 views | 1



The Squid and the Rok

by cfastie about 2 years ago | 4 | 377 views | 3


Mini Pearl Jam

by cfastie about 2 years ago | 2 | 351 views | 2


First flight of the SkyPod

by cfastie about 2 years ago | 4 | 345 views | 2


The Mini Pearl Logger

by cfastie about 2 years ago | 3 | 910 views | 3


Portable thermal IR temperature logger unit

by cfastie about 2 years ago | 3 | 1,213 views | 3


Dual NDVI Ultra Probe Unit

by cfastie about 2 years ago | 9 | 1,031 views | 4


Monitor your data logger

by cfastie about 2 years ago | 0 | 613 views | 3


Data logger shield for Nano

by cfastie about 2 years ago | 16 | 6,933 views | 3


Inexpensive data logging

by cfastie about 2 years ago | 6 | 3,292 views | 3


SkyPod endurance test

by cfastie about 2 years ago | 0 | 335 views | 1


U-blox GPS board

by cfastie over 2 years ago | 3 | 654 views | 2


Will this single timer work for the coqui?

asnow asked about about 1 year ago

Comments

commented on May 14, 2018 0

commented on May 14, 2018 0

commented on May 14, 2018 0

commented on May 14, 2018 0

commented on May 14, 2018 1

Show all 5 comments »

Is it possible to calculate average NDVI in a picture using infragram's sand box?

Hala73 asked about about 1 year ago

Comments

commented on May 04, 2018 0

commented on May 09, 2018 0

commented on May 10, 2018 0

commented on May 10, 2018 0

commented on May 03, 2018 0

commented on May 09, 2018 0

Show all 6 comments »

Calculating NDVI - using PiNoIR camera and blue filter

JLJ asked about over 1 year ago

Comments

commented on Apr 10, 2018 0

commented on Apr 16, 2018 0

commented on Apr 09, 2018 0

commented on Apr 10, 2018 0

Show all 4 comments »

Why do the plant colors look the way they do?

jenhu asked about over 1 year ago

Comments

Spectral Range of Lens?

RexToother asked about over 1 year ago

Comments

commented on Apr 02, 2018 0

commented on Apr 02, 2018 0

commented on Apr 04, 2018 0

Show all 3 comments »

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

nshapiro asked about over 1 year ago

Comments

commented on Apr 01, 2018 0

commented on Apr 01, 2018 0

commented on Apr 01, 2018 0

commented on Apr 01, 2018 0

commented on Apr 02, 2018 0

commented on Apr 02, 2018 0

commented on Apr 02, 2018 0

commented on Apr 03, 2018 0

commented on Apr 09, 2018 0

commented on Apr 09, 2018 0

commented on Apr 10, 2018 0

commented on Apr 11, 2018 0

commented on Apr 11, 2018 0

commented on Apr 11, 2018 0

commented on Apr 11, 2018 0

commented on Apr 11, 2018 0

commented on Apr 11, 2018 0

commented on Apr 11, 2018 0

commented on Apr 11, 2018 0

commented on Apr 11, 2018 0

commented on Apr 11, 2018 0

commented on Apr 11, 2018 0

commented on Apr 11, 2018 0

commented on Apr 11, 2018 0

commented on Apr 11, 2018 0

commented on Apr 11, 2018 0

commented on Apr 12, 2018 0

commented on Apr 12, 2018 0

commented on Apr 12, 2018 0

commented on Apr 12, 2018 0

commented on Apr 12, 2018 0

commented on Apr 12, 2018 0

commented on Apr 12, 2018 0

commented on Apr 13, 2018 0

commented on Apr 14, 2018 0

commented on Apr 14, 2018 0

commented on Apr 14, 2018 0

commented on Apr 14, 2018 0

commented on Apr 15, 2018 0

commented on Apr 15, 2018 0

commented on Mar 28, 2018 1

commented on Apr 10, 2018 1

commented on Apr 11, 2018 1

commented on Apr 11, 2018 1

Show all 44 comments »

How do I do website change detection and notification?

cfastie asked about over 1 year ago

Comments

commented on Mar 19, 2018 0

commented on Mar 20, 2018 0

commented on Mar 24, 2018 0

commented on Mar 24, 2018 0

commented on Mar 24, 2018 0

commented on Mar 26, 2018 0

commented on Mar 27, 2018 0

commented on Mar 20, 2018 0

commented on Mar 21, 2018 0

Show all 9 comments »

Quantitative analysis of wood moisture

MarcioPamplona asked about over 1 year ago

Comments

commented on Mar 18, 2018 0

commented on Mar 19, 2018 0

commented on Mar 19, 2018 0

commented on Mar 18, 2018 2

commented on Mar 18, 2018 2

commented on Mar 18, 2018 2

commented on Mar 19, 2018 3

commented on Mar 19, 2018 0

commented on Mar 19, 2018 0

Show all 9 comments »

600 year old cedar tree - Infragram

Randall asked about over 1 year ago

Comments

commented on Mar 14, 2018 0

commented on Mar 14, 2018 0

commented on Mar 15, 2018 0

commented on Mar 16, 2018 0

commented on Mar 18, 2018 0

Show all 5 comments »

Modified TDS sensor as Conductivity Sensor?

MadTinker asked about over 1 year ago

Comments

commented on Mar 11, 2018 0

commented on Mar 11, 2018 0

commented on Mar 21, 2018 0

commented on Mar 21, 2018 0

commented on Mar 25, 2018 0

commented on Mar 25, 2018 0

commented on Mar 10, 2018 1

commented on Mar 11, 2018 0

commented on Mar 20, 2018 1

Show all 9 comments »

How to make this picture in an NDVI image

Davide_Ferrante asked about over 1 year ago

Comments

commented on Mar 10, 2018 0

commented on Mar 12, 2018 0

commented on Mar 18, 2018 0

Show all 3 comments »

Help the Kits Initiative launch the Basic Microscope Kit by 3d printing lens adaptors!

Bronwen asked about over 1 year ago

Comments

commented on Mar 09, 2018 0

commented on Mar 09, 2018 0

commented on Mar 23, 2018 0

commented on Mar 23, 2018 0

commented on Mar 24, 2018 0

commented on Apr 17, 2018 0

commented on Apr 17, 2018 0

commented on Apr 17, 2018 0

commented on Apr 18, 2018 0

commented on Apr 18, 2018 0

commented on Apr 18, 2018 0

commented on Mar 09, 2018 1

commented on Mar 09, 2018 1

Show all 13 comments »

conductivity sensor electrolysis a concern in moving water?

MadTinker asked about over 1 year ago

Comments

commented on Feb 10, 2018 0

commented on Feb 10, 2018 0

commented on Feb 11, 2018 0

Show all 3 comments »

Canon PowerShot SD750

rjun86 asked about over 1 year ago

Comments

commented on Jan 26, 2018 0

commented on Feb 16, 2018 0

commented on Jan 26, 2018 1

Show all 3 comments »


View these maps at MapKnitter.org »

Title Creation date Image

Comments

Comment Last activity Moderation
" 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 » 4 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 » 5 months ago
" One photo every 50 shots might be sufficient. It depends on how much the light changes during that time (5 minutes?, an hour?, a day?). You might ..." | Read more » 5 months ago
" You are correct that your multi-day observation will present some problems. It is possible that doing a custom white balance on each day will comp..." | Read more » 5 months ago
"These are really nice bee images. If your goal is to make a seamless composite, the free Microsoft ICE (Windows only) will stitch the photos into a..." | Read more » 5 months ago
"The primary advantage of dual band filters is that they pass much narrower bands of wavelengths than red or blue filters (which also pass NIR). Th..." | Read more » 5 months ago
" The simplest modification to make the sketch save to SD card once per minute is to change the line: if (logData == 1) // wr..." | Read more » 6 months ago
"A few different cameras were used to take those photos. Most of the cameras were Canon PowerShots. I think all of the photos were saved by the came..." | Read more » 6 months ago
"Performing a custom white balance on a blue-filtered NIR camera fools the camera into exaggerating the brightness of the red channel. The red chann..." | Read more » 6 months ago
"It will always be difficult to know for sure to what degree the red channel is contaminated by NIR. It might be worthwhile making an estimate. For ..." | Read more » 6 months ago
"Although the absolute values you computed for NDVI are lower than they should be, it appears that your process is successfully discriminating betwe..." | Read more » 6 months ago
"Liz, it's great to know that you (or I guess your Mom) were well coiffed in the 80s, although I regret that you did not include photographic eviden..." | Read more » 7 months ago
"You are correct that both red and NIR pass through the red filter (Rosco Fire # 19) and both are captured in the red channel of the photograph. It ..." | Read more » 7 months ago
"Leslie, I will lend you anything you need. Tell me about your HEPA setup. You must already have a 5V Arduino, so all you need is three DuPont wires..." | Read more » 8 months ago
"Thanks Nick. It's good to know about the duplicate sensors. That's an intriguing engineering decision. Chris " | Read more » 8 months ago
"This photo does not look like it was taken with a mobile phone (the image quality and dynamic range are too high) and it does not look like a CD or..." | Read more » 8 months ago
"The field evaluation report linked above includes 78 graphs comparing the results of a Purple Air sensor with a $25k GRIMM optical particle counter..." | Read more » 8 months ago
"That sounds like a lot of lift in a good wind. Does that come mostly from the kite part or from the aerofoil shape of the balloon part? Wait, does..." | Read more » 8 months ago
"Mathew, The Airpup can lift a payload of 500 grams when there is no wind. Will it lift more when there is wind? How hard was it pulling in the 20 ..." | Read more » 8 months ago
"There is another version of this sensor with the same specifications and the same price but it is about half the size. Does anyone know any reason ..." | Read more » 9 months ago
"You are right that there has not been much follow-through at Public Lab on developing and testing DIY conductivity or total dissolved solids (TDS) ..." | Read more » 9 months ago
"This is great project. The trickiest part will be making the device "unnoticeable to the public." That could be a real obstacle to finding a simpl..." | Read more » 9 months ago
"Magnification in this context is the relationship between the size of an object and the size of an image of that object. Assuming the hatch marks..." | Read more » 9 months ago
"Is \ *markdown * parsed?   Number 1 Number 4 Number 3   " | Read more » 9 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).



Tags

Tags organize our knowledge base. Click to learn more or subscribe to a topic.
  • super-duper
  • lat:44
  • lon:-72
  • location:blurred
  • place:united-states



RSS feed for cfastie


Wiki pages recently contributed to