| Author | Comment | Last activity | Moderation | ||
|---|---|---|---|---|---|
| mathew | "PDFs for images in previous comment. specbox-top-newtab2.pdf spec-box-bottom-newtab2.pdf " | Read more » | over 9 years ago | |||
| mathew | "a lot of small revisions based on the die-cuttable tabs. " | Read more » | over 9 years ago | |||
| mathew | "refined the tabs so they are die-cuttable, more refinements after a first round of laser cut versions. I switched to blue fold lines for the laser..." | Read more » | over 9 years ago | |||
| mathew | "new top and bottom: I split this into two pieces for printing reasons. specbox-top.pdf spec-box-bottom.pdf " | Read more » | over 9 years ago | |||
| mathew | "@Wonko, I don't know that its illegal to track a balloon with cell phone-- can you cite that somewhere? balloons are a different flight category f..." | Read more » | over 9 years ago | |||
| mathew | "sorry to hear about that first kite loss! " | Read more » | over 9 years ago | |||
| mathew | "the linearity of that resistor is going to be temperature dependent and non-linear. it may be necessary to get another device to characterize it. ..." | Read more » | over 9 years ago | |||
| mathew | "updates: http://publiclab.org/notes/mathew/12-06-2014/a-paper-spectrometer-design-pt-2 " | Read more » | over 9 years ago | |||
| mathew | "@marlokeno do you have the link to the DIY SEM? I don't see it in your note. I would love to re-use an old CRT electron gun, but I agree with you..." | Read more » | over 9 years ago | |||
| mathew | "this is based on this probe listed in scott's note, right? http://njhurst.com/electronics/watersensor/ clever design. I'm really into running the ..." | Read more » | over 9 years ago | |||
| mathew | "beautiful map! " | Read more » | over 9 years ago | |||
| mathew | "thanks for putting in a good note on bioindicators! I love benthic macroinvertebrates-- I think its the most clever way to monitor water quality. " | Read more » | over 9 years ago | |||
| mathew | "Continuing to use the same oscillator circuit for depth and conductivity is super awesome! I support whole heartedly. In the 555, pulse time in st..." | Read more » | over 9 years ago | |||
| mathew | "This is a great idea! I'm wondering if a combo of a cellphone app and a solid frame-mounted cellphone case might not work too-- although I wouldn't..." | Read more » | over 9 years ago | |||
| mathew | "Those lower wavelength bands may be cheaper or possibly not require as much cooling to get a fast sensor response. Good thinking. We need a ~100k..." | Read more » | over 9 years ago | |||
| mathew | "MWIR lenses: https://www.thorlabs.com/newgrouppage9.cfm?objectgroup_id=5428 http://www.ispoptics.com/catalog/2/IR%20Lens%20Assemblies http://www..." | Read more » | over 9 years ago | |||
| mathew | "The key filter seems to be a 3.46micrometer peek bandpass filter for midwave (MWIR) infrared. a few groups seem sell them or something like it. h..." | Read more » | over 9 years ago | |||
| mathew | "InAs (Indium Arsenide) looks almost perfect, with a high sensitivity and a peak sensitivity at 3400nm (3.4micrometers) when cooled to 196K. 196K is..." | Read more » | over 9 years ago | |||
| mathew | "Finding a sensor that can do high-speed sampling in the range required is looking pretty expensive. Thor Labs has a series of amplified, cooled se..." | Read more » | over 9 years ago | |||
| mathew | "Can we digitize a 240x320 analog video signal using an standard audio jack? A mac laptop captures a maximum of two cannels (stereo) at 96khz, with..." | Read more » | over 9 years ago | |||
| mathew | "The mirror arrays are looking more and more attractive because of their light-efficiency and compactness. Also, since I can now order cast and hig..." | Read more » | over 9 years ago | |||
| mathew | "it looks like a communication problem, looking for the right port. does adafruit have any details on communicating with their datalogger? /dev/cu...." | Read more » | over 9 years ago | |||
| mathew | "Not exactly sure how to solve your code problem but here is the code in an easier format to cut and paste: ''' include "SD.h" include <Wire.h&g..." | Read more » | over 9 years ago | |||
| mathew | "I'm glad to see the Public Lab community elucidating the basic infrastructure of scientific research. " | Read more » | over 9 years ago |