1 [[!meta title="slow_bend"]]
3 In the course of my [[research|Thesis]], I've spend a good deal of
4 time developing clean, Python interfaces to much of our lab equipment.
5 I also tend to have strong opinions on the One True Way® to solve a
6 problem. This means that I occasionaly end up writing script to run
7 other people's experiment, especially when they don't take all that
10 I wrote `slow_bend` for Liming Zhao, who was a postdoc in our lab
11 from 2008 to 2010. Liming coated one side of an AFM cantilever with a
12 film of cellulose and used [[slow_bend.py]] (version 0.2) to monitor
13 the cantilever deflection as he flushed in different buffers
14 ([paper]). Unfortunately, the paper claims the data aquisition was
15 carried out in LabView.
17 `slow_bend` is not a complicated program; it polls analog input
18 channels using [[pycomedi]] (and optionally reads temperatures using
19 backends from [[pypid]]). The polling continues until `slow_bend`
20 recieves a [KeyboardInterrupt][].
22 $ slow_bend.py --version
25 #time (second) chan 0 (bit) chan 0 (volt) chan 3 (bit) chan 3 (volt)
26 1.81198e-05 34727 0.598001 39679 2.10925
27 4.00409 34956 0.667887 38033 1.60693
28 8.00408 35074 0.703899 36780 1.22454
29 12.0041 35041 0.693828 35814 0.929732
30 16.0041 34917 0.655985 35044 0.694743
33 [paper]: http://dx.doi.org/10.1002/bit.22754
34 [KeyboardInterrupt]: http://docs.python.org/library/exceptions.html#exceptions.KeyboardInterrupt