![]() You might also want to specify the temperature where the fan starts and stops. #define EXTRUDER_0_AUTO_FAN_PIN 4 #define EXTRUDER_1_AUTO_FAN_PIN -1 #define EXTRUDER_2_AUTO_FAN_PIN -1 #define EXTRUDER_AUTO_FAN_TEMPERATURE 50 #define EXTRUDER_AUTO_FAN_SPEED 200 // Use 255 for full speed Just below the Controller fan option you will find the section for the Extruder autofan.Ĭhange the -1 to 4 after EXTRUDER_0_AUTO_FAN_PIN as shown in the image. This is for controlling a fan to cool down the stepper drivers //it will turn on when any driver is enabled //and turn off after the set amount of seconds from last driver being disabled again #define CONTROLLERFAN_PIN 5 //Pin used for the fan to cool controller (-1 to disable) #define CONTROLLERFAN_SECS 60 //How many seconds, after all motors were disabled, the fan should run #define CONTROLLERFAN_SPEED 200 // Change to 255 for full speed Extruder cooling fans Define for how many seconds the fan should run after the last motor activity and set the speed your fan should go. Change the Pin from -1 to 5 as shown in the image. We retain this function.Įither scroll Down or hit Ctrl+f and search for CONTROLLERFAN_PIN If you have an LCD display this particular fan is automatically added to it. In order to control the fan on D9, which is used for printerbed, you will need to use the M106 and M107 codes. ![]() I'm using the Ramps board "MOTHERBOARD BOARD_RAMPS_13_EFB" which Means Extruder D10, Fan D9 and Bed D8 The power can be sourced from somewhere else. If you do not have all the pins needed on your Ramps board, you can solder them on yourself. The image from Geetech has this cable installed in reverse! When the extender board is installed on Ramps, and in same orientation as above, the 12v goes to the top pin on the extender board. Ideally you want to verify this with a multiemeter. When you have the green power-connector on the Ramps board to your left, the pins are oriented with 12v on top and Gnd beneath it. Now install the power-wire on the 12V-aux pins (see images for detail). It can only be installed in one direction - see images for details. The small extender goes on the grouping of pins right next to the reset button - this grouping is the Servos Aux-1 pins. I say this, as the image from Geetech is wrong - at least my extender board has the input pins in reverse. There should be some tiny + and - symbols on it. Now take a close look at the small Extender board. That means remove both the power and usb cords. Step 1: Physically Installing the Reprap Ramps1.4 RRD Fan Extenderīe sure to turn all power off your printer. ![]() I use Pin 4 and 6, but yours might be different. My version is White, and has no versioning numbers or text on it. I'm mentioning this, as it seems different Fan Extenders are using different pins. Foreword on pins used in this instructables:Īccording to the Ramps 1.4 schematics, the Fan Extender is placed over the Ramps servo-pins which has the pins D11, D6, D5 and D4, listed from the top left (with powerplug to the left). You will also need the Arduino IDE and your Marlin firmware files. One of my fans didn't Work, so seller is sending a new one - just undelineing the need to buy locally! ![]() Pay attention to the fans included if any. There is really no money saved by buying in china, so buy locally if possible. You will obviously need the Reprap Ramps1.4 RRD Fan Extender, which can be found multiple Places. To compound the issues most "guides" assumped you were fluent in marlin firmware and gcodes, which I certainly am not! What you will need: All info I found entailed using the extender in a two-extruder scenario meaning disabling the controllable D9 fan, which I did not want to do. I bought the extender and found it really hard to find some usefull information, where most of the information was old and dreprecated and also had various degrees of errenous info like wrong pin numbers. I am using the newest (As of 20th may 2015) iteration of Marlin firmware and run it on an Arduino Mega + Ramps board configured as EFB (Extruder D10, Fan D9, Bed D8). We will retain the ability to control the D9 fan using LCD or the M106 Gcode for the printer-bed as standard. In this Instructable I'll demonstrate how to install and configure Reprap Ramps1.4 RRD Fan Extender to make it possible to add a temperature controlled fan for your extruder (hotend) and a fan to cool your drivers on the Ramps board only when a driver is actually active.
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