From beac3e821f1147c35a3caa4bbcce14c429fcf3c0 Mon Sep 17 00:00:00 2001 From: "W. Trevor King" Date: Sat, 12 Nov 2011 17:44:31 -0500 Subject: [PATCH] Add slow_bend post. --- posts/slow_bend.mdwn | 37 +++++++++++++++++++++++++++++++++++++ 1 file changed, 37 insertions(+) create mode 100644 posts/slow_bend.mdwn diff --git a/posts/slow_bend.mdwn b/posts/slow_bend.mdwn new file mode 100644 index 0000000..d929dc6 --- /dev/null +++ b/posts/slow_bend.mdwn @@ -0,0 +1,37 @@ +[[!meta title="slow_bend"]] + +In the course of my [[research|Thesis]], I've spend a good deal of +time developing clean, Python interfaces to much of our lab equipment. +I also tend to have strong opinions on the One True Way® to solve a +problem. This means that I occasionaly end up writing script to run +other people's experiment, especially when they don't take all that +much time to write. + +I wrote `slow_bend` for Liming Zhao, who was a postdoc in our lab +from 2008 to 2010. Liming coated one side of an AFM cantilever with a +film of cellulose and used [[slow_bend.py]] (version 0.2) to monitor +the cantilever deflection as he flushed in different buffers +([paper]). Unfortunately, the paper claims the data aquisition was +carried out in LabView. + +`slow_bend` is not a complicated program; it polls analog input +channels using [[pycomedi]] (and optionally reads temperatures using +backends from [[pypid]]). The polling continues until `slow_bend` +recieves a [KeyboardInterrupt][]. + + $ slow_bend.py --version + 0.4 + $ slow_bend.py 0 3 + #time (second) chan 0 (bit) chan 0 (volt) chan 3 (bit) chan 3 (volt) + 1.81198e-05 34727 0.598001 39679 2.10925 + 4.00409 34956 0.667887 38033 1.60693 + 8.00408 35074 0.703899 36780 1.22454 + 12.0041 35041 0.693828 35814 0.929732 + 16.0041 34917 0.655985 35044 0.694743 + ^C + +[paper]: http://dx.doi.org/10.1002/bit.22754 +[KeyboardInterrupt]: http://docs.python.org/library/exceptions.html#exceptions.KeyboardInterrupt + +[[!tag tags/code]] +[[!tag tags/python]] -- 2.26.2