Red fan extender / fan pin
Hello i see another question and answer about red fan extender but i have one problem with this.
ramp 1.4 and arduino mega 2560 i add a red fan extender and in pin .h #define fan pin 4 i change with 6 and i have just one fan work and for my another extruder he don't work i don't see where i can change a number for D11 for my second fan . and i try with another ligne but doesn't work.If you have an idea it's really really cool because i look for many days .Many thanks for your answer
Comments
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.
The RRD-FAN-EXTENDER is exactly what i need in this case. It is a plug and play solution to mount the FAN for DUAL-EXTRUSION setups with RAMPS1.4. But instead of
adding only one additional output port the RRD-FAN-EXTENDER is equipped with 2 PWM controllabe 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).
Normally it's easy to adapt to other firmware (just change "#define FAN_PIN 6" in "pins.h")
Thanks again