1,Add active cooler PWM fan.control the CM5 temperature within 52℃ at fully loaded.
PWM fan control
dtparam=fan_temp0=45000
dtparam=fan_temp0_hyst=1500
dtparam=fan_temp0_speed=75
dtparam=fan_temp1=53000
dtparam=fan_temp1_hyst=2500
dtparam=fan_temp1_speed=127
dtparam=fan_temp2=58000
dtparam=fan_temp2_hyst=3500
dtparam=fan_temp2_speed=191
dtparam=fan_temp3=63000
dtparam=fan_temp3_hyst=4500
dtparam=fan_temp3_speed=255
2,Add RTC battery.
3,Add AI camera.
4,Add CM5 wifi antenna kit.
5,Add screen protect cover.
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