That reading is then scaled based upon the known 5 VDC reference voltage provided as part of the Arduino nano. The thermistor is part of a voltage divider circuit, which is fed into A0, an analog input port whereby the voltage reading is taken. My goal was to keep the temperature below 150 degrees F, as the amplifier has a shutdown temp of 170 degrees and was becoming too hot for my liking during extended usage periods. I used Kapton tape to insulate the themistor from direct contact with the heat sink. in my case, a large heat sink on a 160 watt linear amplifier. ![]() The controller uses a 10K thermistor to sense remote temperature from the target device. ![]() Note that it uses the TimerOne library to provide higher-resolution Timer1 frequency control for the Pulse Width Modulation to control the fan speed. Source code for the Arduino sketch is attached and below. ![]() You can find the schematic ready to edit and go on EasyEDA here.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |