MLCS RSC-9400 Router Speed Controller Servo Mount

thingiverse

This is the wrong way to do this, but it's much cheaper than buying an electronically controlled Router Speed Controller. This will require some significant fitting. Filing that little knob is a pain to measure. Made for a RSC-9400, controlling a DW660, controlled by Marlin, on an MPCNC. To control, just add appropriate M280 G-code commands where needed. For example: MAX SPEED: M280 P0 S0 (assuming the servo is plugged into the first port, or position 0). MIN SPEED: M280 P0 S180. With a bit of creative programming and a Hall Effect sensor, you can get Marlin to maintain the DW660 RPM pretty accurately, even when cutting. No more stalls! I have done several spinup tests with this setup, and it has held together extremely well for about 10 hours. Make sure you have a fan on your speed controller; that back plate gets hot. HARDWARE Required: Two M3 screws, about 7mm long, with normal nuts. The three-millimeter holes on the dial adapter are spaced 17 millimeters apart; you'll likely need to drill holes in the servo bracket for the M3 screws to fit. If you don't have this exact servo, an OpenSCAD file is included; just make the one inside match yours. EDIT: I've uploaded two new files with a "MK2" suffix. These files haven't been printed or tested yet. I made several small changes, including adding a screw plate under one side of the servo so you won't poke your fingers on the ends of the self-tapping screws from the servo. The ID of the knob adapter is now about 1 millimeter bigger, which means less filing to make it fit. I also added nubs on the knob adapter, so you can turn it by hand when the servo is disabled or broken, or when the software can't get the setting right. Print Settings: Rafts: It doesn't matter what rafts you use. Supports: No supports are needed. Resolution: The resolution of this print can be as low as 0.3; it doesn't really matter. Infill: Ten percent infill is enough; it doesn't really matter either. Notes: There's basically no force on this mount, so it should be easy to print. Its sole purpose in life is to hold a servo at the proper location to turn a knob. As long as you can support a half-ounce servo, you could print this thing out of frosting.