I don't really have room for that shroud, but thanks. I think I will give that blower a try with a custom shroud.by TbirdMan - Delta Machines
I just got setup with a 3KU delta printer and am in need of cooling (it ships with a dinky 25mm that is useless.) my current workaround is a 120mm and 80mm fan sitting on the print bed blowing on the print but this is obviously not ideal. I don't want to add the weight of a fan to my effector since lightweight is sort of the point of a delta. I want to add a larger blower up top and duct the airby TbirdMan - Delta Machines
I will only have the one GND reference, I will connect both RAMPS 12V to the PSU +12V and GND, the Pi to 5Vsb and PSU GND and the Pi will power the Arduino (which to my surprise is an authentic Arduino Mega). As for diode D1, my clumsy fingers have decided it's fate. while trying to remove the heatsink from a stepper driver to probe the pot to adjust it I must have shorted something and D1 poppedby TbirdMan - RAMPS Electronics
the 12V lines and 5Vsb should share the same ground, so that shouldn't be an issue AFAIK. I will have to look at how the code works but I imagine it shouldn't be too hard to ground PS_ON with the arduino when the printer starts it's warmup cycle.by TbirdMan - RAMPS Electronics
Ok, I guess i should have just looked at the RAMPS schematic. If I remove the diode D1 will that cause any problems if the 12V lines on the RAMPS are turned off/on with the Arduino on?by TbirdMan - RAMPS Electronics
I recently ordered a Chinese delta printer that uses a RAMPS 1.4 and knock off Arduino Mega. I plan to add a heated bed and the included 10A PSU will not be enough to supply the full demand (6A bed + 7A for steppers/hotend) . I plan to replace it with an ATX PSU I have here that can handle 14A on it's 12v line. I am gonna be pushing that output a bit more then i would like so I would like to offlby TbirdMan - RAMPS Electronics
Those look interesting, and perhaps i might go that way, or make my own RepStrap. but whatever way i go, I think the RepRap spec electronics should work. My biggest concern was weather the motor drivers would take the larger motors and from what i can deduce they should at least with good cooling.by TbirdMan - Controllers
that is true, however i also am interested in learning some electronics and how to SMT solder. this is a learning experience for me as much as just trying to get a CNC mill going.by TbirdMan - Controllers
That is what i figured, i will probably use the mill to manufacture the parts for a Mendel out of a suitable material. for machining slow is usually better and from what i can deduce 3d printing requires more speed. perhaps i can setup my electronics package to be able to transfer from one device to the other? Maybe just two mobos and use the rest interchangeably.by TbirdMan - Controllers
This is the mill I am looking at: Sherline 5000/5100. The NEMA 23 motors they provide with their CNC packages are rated at 2A so perhaps the Reprap drivers with some cooling would be enough? My goal is to keep my costs down as much as possible and do as much of the assembly myself as I can. EMC2 is what Sherline uses for their packages so that is a good option, are you saying that with those drivby TbirdMan - Controllers
Thank you for your information, the Makerbot stepper controller claims to support NEMA-23 motors, should that be true of other RepRap drivers (i.e. BotMill)? Also, do you think the mill would require significantly more current to cut metal vs. a 3D printer application? I will admit this is all new to me so please be patient as i wrap my head around this fascinating concept. I have wanted to get iby TbirdMan - Controllers
I am considering buying a manual bench-top mill that I can convert to CNC eventually. It will use NEMA 23 motors for the axes, and I was curious as to weather the Reprap electronics would be capable of handling this application? The manufacturer's CNC controller costs $800 alone and uses a parallel cable, so if I can save money (perhaps even more if i learn to SMT solder) that would be great.by TbirdMan - Controllers