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question about connection fan 5v to mellow sb2040

Elijah

Member
Printer Model
VORON 2.4r2
Extruder Type
Clockwork 2
Cooling Type
Stealthburner
hello everyone.
tell, please , to which contacts on the mellow sb2040 can I connect a 5v fan, if it has 5v, gpio and vcc contacts? this fan is two-wire
 

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If you connect the fan to 5V and Gnd it will run all the time. If you connect to 5V (vcc on the fan) and the gpio (gnd on the fan), then you can control the speed of the fan using PWM in the klpper configuration.

Here is my config setup for that fan:

[heater_fan hotend_fan]
pin: sb2040:gpio14
max_power: 1.0
kick_start_time: 0.5
heater: extruder
heater_temp: 50.0
## If you are experiencing back flow, you can reduce fan_speed
fan_speed: 0.8
 
If you connect the fan to 5V and Gnd it will run all the time. If you connect to 5V (vcc on the fan) and the gpio (gnd on the fan), then you can control the speed of the fan using PWM in the klpper configuration.

Here is my config setup for that fan:

[heater_fan hotend_fan]
pin: sb2040:gpio14
max_power: 1.0
kick_start_time: 0.5
heater: extruder
heater_temp: 50.0
## If you are experiencing back flow, you can reduce fan_speed
fan_speed: 0.8
big thanx! and special thanks for the configuration :)
 
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