3D Printer Reprap Ramps 1.4 RRD Fan Expansion Module 3D Printer Fan Module

3D Printers Reprap Ramps1.4 RRD Fan Fan Module Expansion Module 3D printer Brief introduction      If you build or upgrade your printer and a two (2 machines), including a heated bed all output ports (D8, D9, D10) will be used. In this case, there is no choice firmware control the fan connected directly to the swash plate. However, in the sprint / Marlin firmware has an option already (Marlin: board = 34), the fan ramp output D4. However, the program requires a “buffer / driver” for the job.   Feature      Maximum 20V      2 (PWM control) channel (D6/D11)      Per channel maximum 0.5A (enough for a truly big fan)      Flexible output voltage (you can connect the FAN RRD extension to support your desired output voltage of 12V, 5V, …)      Easy to install (Plug and Play)