Cooling Profile Parameters - Raspberry Pi PiCoolFAN4 User Manual

PiCoolFAN4

Cooling Profile Parameters

Each Cooling Profile contains a set of three parameters which control how the profile reacts to
temperature changes. These parameters are:
•
Sensor and cooling profile selection (Smode)
•
Temperature threshold (Ttemp)
•
Fan speed change rate I.e. how the speed of the fan will change depending on temperature
changes (Tstep)
Users can change any one (or all) of these parameters to customize cooling to their exact needs. All
changes are stored in the EEPROM i.e. the settings are saved, even when the Raspberry Pi is turned off
and on again.
This section will describe the different options for each parameter, then describe how to structure and
issue this command to the Raspberry Pi.
Smode
System Mode (smode) defines both the sensor to be used and the cooling profile to be used with that
sensor.
The following values are available:
smode
value
0x00
0x02
0x10
0x12
0x20 Manual System - User needs to start/stop the fan manually (via commands) and check
Note: In order to use the Raspberry Pi temperature sensor, some software setup is required. Please see
page 18.
Note: 0x00 is the factory default smode setting
Designed by www.pimodules.com
Firmware Code 0x14
Temperature Sensor
PiCoolFan4
Raspberry Pi
PiCoolFan4
Raspberry Pi
the temperature manually
manufactured in co-operation with
Print Date 10.11.2019
Cooling Profile
Mild
Mild
Hard
Hard
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