Ramps 1.6 and 3 pin Fan for Cooling Dear RepRap Forum members, I am using RAMPS 1.6 with 4 TM2208 drivers. I want to cool these drivers with a 3 pin (red, black, white) fan. How should I connect the fan and run it? Best regards. bkarpuz https://reprap.org/forum/read.php?219,892919,892919#msg-892919 Wed, 22 Jul 2026 06:28:23 -0400 Phorum 5.2.23 https://reprap.org/forum/read.php?219,892919,892944#msg-892944 Re: Ramps 1.6 and 3 pin Fan for Cooling https://reprap.org/forum/read.php?219,892919,892944#msg-892944 Dust RAMPS Electronics Thu, 08 Jun 2023 19:33:58 -0400 https://reprap.org/forum/read.php?219,892919,892943#msg-892943 Re: Ramps 1.6 and 3 pin Fan for Cooling https://reprap.org/forum/read.php?219,892919,892943#msg-892943
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Dust
RAMPS uses 2 wire fans.
They PWM the power to change the speed. Ie then only use +V (red) and GND (black) wires.

Fans have to be connected via a mosfet to be software controlled.
A stock ramps has 3 mosfets, used for hotend, heated bed and part cooling fan.
If I will not be using hotend and heated bed, can I connect 2-pin fans to these outputs?]]> bkarpuz RAMPS Electronics Thu, 08 Jun 2023 10:24:35 -0400 https://reprap.org/forum/read.php?219,892919,892923#msg-892923 Re: Ramps 1.6 and 3 pin Fan for Cooling https://reprap.org/forum/read.php?219,892919,892923#msg-892923
That mosfet extension plugs into the servo plugs


]]> Dust RAMPS Electronics Tue, 06 Jun 2023 07:38:02 -0400 https://reprap.org/forum/read.php?219,892919,892922#msg-892922 Re: Ramps 1.6 and 3 pin Fan for Cooling https://reprap.org/forum/read.php?219,892919,892922#msg-892922
Quote
Dust
A stock ramps has 3 mosfets, used for hotend, heated bed and part cooling fan.
Part cooling is the part being printed, right?

Quote
Dust
So step 1 is add more mosfets eg by using a RAMPS RRD Fan Extender
How can I connect this to RAMPS 1.6?

Thank you very much Dust.]]> bkarpuz RAMPS Electronics Tue, 06 Jun 2023 06:02:00 -0400 https://reprap.org/forum/read.php?219,892919,892920#msg-892920 Re: Ramps 1.6 and 3 pin Fan for Cooling https://reprap.org/forum/read.php?219,892919,892920#msg-892920

Fans have to be connected via a mosfet to be software controlled.


A stock ramps has 3 mosfets, used for hotend, heated bed and part cooling fan.


So step 1 is add more mosfets eg by using a RAMPS RRD Fan Extender

Step 2 is to configure a Controller Fan. this fan turns on when heating mosfets are active or when stepper drivers are active.
Enable #define USE_CONTROLLER_FAN
Add the mosfet pin #define CONTROLLER_FAN_PIN {pin number}]]> Dust RAMPS Electronics Mon, 05 Jun 2023 08:11:12 -0400 https://reprap.org/forum/read.php?219,892919,892919#msg-892919 Ramps 1.6 and 3 pin Fan for Cooling https://reprap.org/forum/read.php?219,892919,892919#msg-892919
I am using RAMPS 1.6 with 4 TM2208 drivers. I want to cool these drivers with a 3 pin (red, black, white) fan. How should I connect the fan and run it?

Best regards.
bkarpuz]]> bkarpuz RAMPS Electronics Mon, 05 Jun 2023 07:48:29 -0400