Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A low-cost cryogenic temperature measurement system using Arduino
  microcontroller   We developed a simple, flexible, low-cost, and computer-controlled cryogenic
temperature measurement system for undergraduate instructional laboratories. An
Arduino microcontroller board measures the voltage across a silicon diode to
calculate its temperature. Resistors and a voltage regulator provide constant
current into the silicon diode. We present a graphical user interface based on
the open-source Processing language. The cost of the complete temperature
measurement system is thus only a small fraction of any highly-developed
commercial system. Our performance test shows that the system works at a
reasonable accuracy from 297.15 K (typical room temperature) down to 77 K
(liquid nitrogen temperature).

2
The categories of this paper are: math
4
The categories of this paper are: cond-mat
13
The categories of this paper are: quant-ph
19
The categories of this paper are: eess
36
The categories of this paper are: cmp-lg
5
The categories of this paper are: gr-qc
14
The categories of this paper are: math-ph
16
The categories of this paper are: stat
12
The categories of this paper are: nucl-th
1
The categories of this paper are: cs
30
The categories of this paper are: q-alg
0
The categories of this paper are: hep-ph
6
The categories of this paper are: astro-ph
21
The categories of this paper are: adap-org
22
The categories of this paper are: chao-dyn
8
The categories of this paper are: hep-ex