Server space – cloud or on-campus?

Cloud storage is not the cure-all it is sometimes proposed to be. On-campus servers have some advantages in transmission speed and cost, especially as storage requirements grow considerably. Talk to your campus IT services before shelling out 90% of your R01 to Amazon to store your petabyte (PB) dataset. Cloud storage is good for personal

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Bias – Good people aren’t good enough

This is a bit off topic, but it’s my blog, so I’ll allow it. A brief note on bias: It’s not good enough to be a good person. Bias can be like an optical illusion. It’s something your brain does despite your best intentions. You have to actively address your biases. Don’t trust yourself to

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EasyEDA update – online circuit design

We posted about EasyEDA years ago. They’re going strong. They’ve updated the software, and added an online, free Gerber viewer. They’ve also branched out and sell components.

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New online forum for Labrigger

Here are the new Labrigger forums, running on Discourse. Background: Justin Kiggins asked about having a Slack channel for Labrigger. The poll indicated majority support, so we agreed to set it up. Alexander Chamessian suggested using Discourse instead of Slack, we investigated and found it was cheaper and had better organization for this type of

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Labrigger on Twitter

FYI: Labrigger also has a Twitter feed, which has content that doesn’t show up on this web page.

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Optical Revolution meeting, Sept 6-10, Woods Hole

The 71st Annual Symposium of General Physiologists is entitled “The Optical Revolution in Physiology: from Membrane to Brain“. It features some great scientists including: Jennifer Lippincott-Schwartz, Atsushi Miyawaki, Eric Betzig, Vivian Gradinaru, Na Ji, and more. It will be held September 6-10, 2017, at the Marine Biological Laboratory in Woods Hole, Massachusetts, USA. The early deadline

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Using NI DAQmx in MATLAB

This post is from Rob Campbell: As part of TENSS [editor’s note: this course is run by great people– highly recommended] we have created a set of examples showing how to use DAQmx in MATLAB without the Data Acquisition Toolbox. This is achieved using Vidrio’s free wrapper, which exposes almost all of the DAQmx API

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OpenMV – Fast and easy machine vision

OpenMV is an open source machine vision system. It’s designed to be easy-to-use, with a gentle learning curve. They want this to be the “Arduino of Machine Vision”. The software IDE is free and open. The hardware is available from Sparkfun and other places. Color blob detection, eye and pupil tracking, motion detection, etc. You

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Moire lenses

Moiré lenses are cool: two patterned diffractive optical elements are rotated relative to each other to vary the power of the “lens”. Just watch the video (below). Demonstration of focus-tunable diffractive Moiré-lenses Stefan Bernet, Walter Harm, and Monika Ritsch-Marte Vol. 21, Issue 6, pp. 6955-6966 (2013) •https://doi.org/10.1364/OE.21.006955 And their 2008 theoretical work.

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Democratized state-of-the-art neuroscience

Andre and colleagues have a preprint up on their project generating inexpensive instrumentation for imaging and optogenetics experiments. The 100 Euro Lab: A 3-D Printable Open Source Platform For Fluorescence Microscopy, Optogenetics And Accurate Temperature Control During Behaviour Of Zebrafish, Drosophila And C. elegans. The authors use this instrumentation in courses at African universities. Open

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March for Science – Apr 22

OSA – Optical Society of America SfN – Society for Neuroscience March for Science

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Nature is diluting their brand

From MIT. Hat tip to J.S. More print-outs: Flyer in the Physics building Kawaii psychophysics

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Actually useful comments on scientific blogging

I came across Rachel Thomas’ comments on blogging in the context of machine learning, and they’re good. I’ve been telling people things like this for awhile now and Rachel distills them better than I do. I’ll quote some of my favorites, but check out her post to read the full story. This single point was

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PMT power supply

I was cleaning house a bit, and among my old files I found this, which might be worth sharing. Years ago I made a centralized power supply for a custom 2-photon imaging system I built. There were two epi detectors (for red & green fluorescence) and three trans detectors (red, green, and IR-based “DIC-like Dodt”

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Driving a green laser pointer with MicroManager

Reminder: green laser pointers have a ton of IR in them. It needs to be filtered out if you don’t want it. See this old (2011!) Labrigger post. I.e., Paul and Kurt are right (see above). The absurd amount of power you measure out of a “green” laser pointer is not because it is recklessly

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