Shenzhen Big Tree Technology Co., Ltd.
BIGTREETECH
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3.4 Voltage Selection of CNC Fans
Set the output voltage to 5V, 12V, or 24V with a jumper cap. Note: Please confirm
the fan's operating voltage before choosing a voltage. Our company is not
responsible for fan burnout caused by wrong selection.
3.5 100K NTC or PT1000 Setting
When using a 100K NTC thermistor, there is no need to insert the jumper cap,
and the pull-up resistance of TH0-TH3 is 4.7K 0.1%. When using PT1000, you
need to use a jumper cap to connect the two pins in the red box in the figure
below and connect a 4.12K 0.1% resistor in parallel. At this time, the pull-up
resistor of TH0-TH1 is 2.2K (Note: The temperature accuracy read out in this way
will be far less accurate than that read out by MAX31865).
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