For the Duet, there is a PWM Fan, which I assume you would use a thermistor to adjust, but the only two thermistor connections on the board are for hot end regulation and heated bed regulation. How do you hook up the fan to be automatically modulated? Parts I am still looking for: Extruder proximity sensor.- what is my best option? looking for very lightweight. Bearings and pulleys Manual adby patrickrio - CoreXY Machines
Hi Dc42. So, I just bought the Duet... now I need to get the six endstops. I just noticed now that there are only 3 axis sensor connections and one proximity sensor conection which I assume is used for self leveling. Do I wire 2 x axis endstops to the same connections and the printer just knows which end it hit??? Is there a ready built hall effect sensor I can use or should I pick optical?by patrickrio - CoreXY Machines
Ordered hot end with 24 volt everything. ordered 12v fan and heater block from ebay for $4. I am covered either way.by patrickrio - CoreXY Machines
. Still have not decided which 32 bit board I am getting and so have not ordered it. Since these power supplies ship in two days, I can wait a bit to order...... but $24 is cheap!!!by patrickrio - CoreXY Machines
my heated bed says it can use either 12v 0r 24v depending in how it is wired. 12V takes 10A max and 24V takes 5A max. which electronics can't take 24V???? Just the Ramps, right???by patrickrio - CoreXY Machines
Hmm. I think these are essentially the exact same transformer with the save power level. One is 24V 15A and the other is half the volts and double the amps at 12V 30A. I figured that going 24V would let me use smaller wire for my wiring. What are the advantages and disadvantages of going 12V vs 24V?????by patrickrio - CoreXY Machines
Power supply. Will this work?by patrickrio - CoreXY Machines
Turns out, right now that the DRV8825 drivers are the cheapest of all drivers... So I think that as long as you are not buying a kit, or buying a board with drivers built in, there is no reason not to buy the DRV8825. If the board can't handle 1/32, you can always do 1/16 or 1/8 right????by patrickrio - CoreXY Machines
So, Do these control boards allow you to use 0.9 percent steppers too? What about these motors: Some of them are the same motor just from different suppliers.... Do these work?????by patrickrio - CoreXY Machines
Control Board Research... The options: Cheap Ramps 1.4 complete with 2004 LCD $16: comes with stepper drivers, Mega2560, cables and LCD all for $16. I am going to get a set as a backup. so cheap it may go up in smoke..hahahah. this was too good to be true... when you get ready to order it pops up with an options screen and what appears to be $16 becomes $70...... not happening. One board raby patrickrio - CoreXY Machines
all I have at the moment are extruded rail 2020 frame. lots of stuff ordered though. are the ones you have really loose???? does it slide more like a kitchen drawer than a cnc????by patrickrio - CoreXY Machines
Thanks Doug. I checked them out. did not find any motor that was short..... I will email them.by patrickrio - CoreXY Machines
I think these are the other 3 steppers: $37 for 3 78 oz in holding $12.32 eachby patrickrio - CoreXY Machines
I have a first find for the z axis stepper. 1.5 inch high motor at $50 FOB Las Vegas. Any reason this won't work??? this is the one I need to beat.by patrickrio - CoreXY Machines
Hi AndrewBCN, You are totally right about design.... and my post did not outline that I am not willing to make really bad design choices in order to get a shorter motor. If bad design results, I will just raise the Z axis more. HOWEVER, all other things being equal, I am willing to spend a little more money to get a shorter motor and shorter Z axis. GOOD design on this piece means that I needby patrickrio - CoreXY Machines
Hi Dc42, The Z axis motor needs to be short because it is going under the Z table, and the shorter it is, the larger the reinforcements to the Z table can be. I am trying to shorten the Z distance of the frame as part of my design goals. Admittedly, shortening the Z axis is not as important as keeping the XY axis' short, but shorter Z will still be better. AndrewBCN is suggesting that cost wby patrickrio - CoreXY Machines
Dc42, thanks for the advice. I have read about the issues with Marlin also... That makes me a bit wary of Marlin of course, but I assume that this problem will eventually be solved. As far as the choice between 8 bit and 32 bit, for this machine, having it connectable to a web server would be a big future advantage, and not easy to do with 8 bit. I guess I could connect it to a pc and VMWare tby patrickrio - CoreXY Machines
I watched the videos for the TMC 2100. Huge difference in sound level!! So do these work in any Pololu socket on any controller or does it only work on some of them? It is difficult to find info on them as it seems these are supported primarily in Germany?? Where is the best place to get them for US residents? Here is the only place I could find them for sale: The shipping will probably kiby patrickrio - CoreXY Machines
Thanks Andrew BCN. So you are saying that the 8 bit processors will not run out of OOMPH at the higher micro-stepping rates and higher print speeds??? It was my understanding that calculating CoreXY coordinates is more complicated than strait Cartesianal but easier than Delta. I have read that they sometimes even have trouble keeping up with 1/16 micro-stepping in certain situations. I really wby patrickrio - CoreXY Machines
Thanks Dc42.... My decision for controller is probably going to come down to raw processing power... which one can calculate the most steps per second, after overhead bite???? what other ones should I look at?? The truth is, it may not matter if I use a 1/16 step, depending on the steps per minute that a given processor is capable of achieving... The max steps per second that the processors caby patrickrio - CoreXY Machines
Hi mdcompositi... where did you finally find the best price on this linear slide???? I will be using this same slide in my build... best, Patrickby patrickrio - CoreXY Machines
Hi, I live in New York, so keep that in mind when suggesting parts and suppliers.... So, I have decided to build a cross between THIS: And Rectangled's build HERE: I really like the way that these use HIWIN flat linear slides in the X or Y axis. I have found a decent price on slides HERE: too long and big for chosen small printer If you know where I can get even better pricing onby patrickrio - CoreXY Machines
Hi everyone! My name is Patrick and I have some questions, most of which will be asked in the next post..... I need to make some of the decisions NOW though so I can size my printer and order the parts that will take a long time. Things I need as soon as possible so I can get exact measurements and calculate frame and other part sizes: 1. Find Z axis stepper motor and order. Must be REALLY shby patrickrio - CoreXY Machines