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Changes for page Sensor Module

Last modified by Heimir Thordarson on 2026/07/05 12:56
From version 27.1
edited by Heimir Thordarson
on 2026/01/22 13:50
Change comment: There is no comment for this version
To version 33.1
edited by Heimir Thordarson
on 2026/01/22 13:56
Change comment: There is no comment for this version

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... ... @@ -68,12 +68,18 @@
68 68  (% class="wikigeneratedid" %)
69 69  As shown in the figure above, the thermistor is put into a voltage divider circuit with a 4k7 ohm resistor to convert the resistance changes of the thermistor to a measurable voltage. To find the temperature of the thermistor based on the voltage measure by the analog-to-digital converter (adc), the resistance of the thermistor needs to be calculated based on the voltage from a voltage divider.
70 70  
71 -(% style="font-size: 1.5em;" %) ((({{mathjax}}
71 +(% style="font-size: 1.5em;" %)
72 +(((
73 +{{mathjax}}
72 72  $$
73 73  R_T = R_f \frac{V_{out}}{V_{in} - V_{out}}
74 74  $$
75 -{{/mathjax}})))
77 +{{/mathjax}}
78 +)))
76 76  
80 +Where:
77 77  
82 +* ~(~(~(~{~{mathjax}} $$R_f$$ ~{~{/mathjax}}~)~)~) = the upper resistor in the voltage divider which stays fixed, which in this case is 4.7k \(\Omega\)
83 +
78 78  (% class="wikigeneratedid" %)
79 79