Reprap Ramps 1.4 RRD Fan Extender 2 PWM controllable channels for DUAL-EXTRUSION 3D Printer Mendel

Description:

• If you build or upgrade your printer with/to DUAL-EXTRUSION (2 extruder) including a heated bed all the output ports (D8, D9, D10) will be used. In this case there is not option to connect a firmware controlled FAN to RAMPS board directly. However in Sprinter/Marlin firmware there is an option already (Marlin: BOARD=34) which redirects the FAN to RAMPS output D4. But this solution needs a "buffer/driver"in order to work.
• This RRD-FAN-EXTENDER is exactly what you need in this case. It is a plug and play solution to mount the FAN for DUAL-EXTRUSION setups with RAMPS 1.4. But instead of adding only one additional output port the RRD-FAN-EXTENDER is equipped with 2 PWM controllable channels(D6/D11). The second channel can be used for another fan (e. g. to cool the stepper driver) or for adding light control (e. g. add dimmable LED light to your machine).

Features:

• max 20V
• 2 (PWM controllable) channels (D6/D11)
• max 0.5A per channel (enough for a really big fan)
• flexible output voltage (you can connect the RRD-FAN-EXTENDER to 12V, 5V,... in order to support the output voltage you need)
• each channel has a fly back diode
• easy setup (plug and play)
• already supported by Marlin firmware (choose "#define MOTHERBOARD 34")
• easy to adapt to other firmware (e. g. Sprinter: just change "#define FAN_PIN 6" in "pins. h")

Package Content:

• 1pcs RepRap Ramps 1.4 RRD Fan Extender