RRD Fan extender for dual extrusion

ECO-RRD-FAN-EXTENDER

New product

  • Required if using the power fan output to drive the 2nd hot end heater.
  • Can drive 2 fans (max 20V, 0.5A per channel)

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6,00 € tax incl.

More info

Easy and controlable

  • Easy to install
  • has 2 controlable PWM output channel

Why?

  • You will need this board if you are using Ramps or MKS control boards with dual extrusion
  • The 2nd power output will be used for the 2nd hot end, so you will have no more power output to drive your cooling fans.
  • In order to keep the cooling fans controlable, you will need this board.

How to install?

The board is to be wired this way

RRD fan extender Ramps 1.4

On the left side, you have the main power supply for the fans

You will need to connect your +12V from the ramps

WARNING: make sure to to respect the polarity:

Red wire = +12V

BLack wire = 0V (GND)

You then need to connect this board to the Servo port of the ramps.

Here a reseveral pictures to help you

The blue arraow shows where you can get the +12V power supply from the board

The black arrow shows where to connect your fans.

WARNING: make sure to to respect the polarities:

Pins D6 and D11 are used to drive the board (here on the red row).

These 2 pins are PWM capable output pins.

RRD fan extender Ramps 1.4

RRD fan extender Ramps 1.4

RRD fan extender Ramps 1.4

Yes but I have a BLtouch!

Keep calm, everything is fine!

Shift the module 2 columns on the right

In your firmware, just change the pins mapping (file pins_ramps.h for marlin firmware)

  • D11 => D5
  • D6 => D4

RRD fan extender BLTouch

I have an inductor probe + 1 E3D Chimera dual extrusion hot end + RRD + 2 end of filament sensor module

câblage ramps 1.4 + RRD + double détecteur de fin de filament + E3D Chimera

Of here it's still feasable!

Shift right your RRD by 2 pins, the same way as describe above.

Firmware for this configuration

Here is a firmware already modified: Scalar S + E3D Chimera + RRD + Z M8 + TMC2208 in X et Y + dual end of filament module

The procedure to install the firmware Is described here

How to update an existing firmware

In your firmware you need to update the pin association (file pins_ramps.h inside marlin folder)

  • D11 by D5
  • D6 by D4

Look for line "#ifndef FIL_RUNOUT_PIN"

  • replace #define FIL_RUNOUT_PIN    4  by #define FIL_RUNOUT_PIN    11
  • Add below #define FIL_RUNOUT2_PIN    6

Warning: this setup requires:

  • You cannot have bltouch
  • You can use TFT 28 connected on AUX1
  • you must use the RRD module
  • You need a E3D Chimera dual extrusion hot end in order to use this firmware setup
  • You cannot use the Neopixel module on pin 4 (you will need to change this pin association if you need the neopixel rgb light)

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RRD Fan extender for dual extrusion

RRD Fan extender for dual extrusion

  • Required if using the power fan output to drive the 2nd hot end heater.
  • Can drive 2 fans (max 20V, 0.5A per channel)

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