I'm gonna certainly try pulley and belts now! At the beginning it seemed difficult to use and I wanted to stick to the original design but now I see using belts it's even easier to build the machine. Maybe it will cost a little more..but that's what you pay for quality Also I'll try 1/16th microstepping given that I'm using Pololu too! I didn't know it was quiter with that setting.by oniric - General
NewPerfection Wrote: ------------------------------------------------------- > I ran without a Z endstop because I couldn't > figure out a good place to put it. Before each > print I lowered the Z axis until it just touched > the top of a flat dremel wrench that I had that > had a known thickness. Anything with a known > thickness will work. In the start gcode I had a > G9by oniric - General
Buback Wrote: ------------------------------------------------------- > Endstops aren't required. you can run your printer > just fine without them. You'll have to manually > home and remove any homing gcode commands, and be > extra vigilant for crashes until you know how your > machine behaves. > > I've been running without any endstops for about > 10 months with no probby oniric - General
Yes I'm building one! I started as a joke, but I've almost finished the mechanics and now I'm searching info about the endstops. I know McWire isn't perfect but, I've already done 3/4 of it so let's finish and try! ^^ You have experience with McWire you said, do you documented a buildlog or something (maybe a photoalbum) online? I'm using a threaded rods design but maybe I can learn something froby oniric - General
Hi, I'm building a McWire RepStrap machine and I'm starting to look at the z stage. But I have a question. I don't have an extruder right now and I think that at the beginning I'll be using a pen just for testing purposes. So I don't know exactly where to put the z axis endstop! I was thinking about using only the MIN one (the one that catches when you are near the printing bed, is it the MIN onby oniric - General
I found this stepper in a scanner but I'm unable to find any specification. I can only read this: EPCOH (maybe EPOCH?) ST42-21240A 11.8 Ohm 22.80014.052 Do you know something about it? Or maybe from the name is it possible to obtain some information about steps or voltage and current rating? EDIT: It could resemble one of these: I have only a L293D do you think is safe to drive this motor wby oniric - Stepper Motors, Servo Motors, DC Motors
Ops, I misinterpreted this part of the features list in the wiki: - 3 mosfets for heater / fan outputs and 3 thermistor circuits Now it's all clear, thank you!by oniric - RAMPS Electronics
I see, well probably much of the cost of the RAMPS board come from the Pololu Drivers ^^ Also my breadboard is much smaller than yours XD It would be a pain to use...by oniric - RAMPS Electronics
Hi, I'm just a noob in electronics so maybe this is a stupid question but I'm trying to learn so I hope someone will ask me I would like to know what's the power transistor for the thermistor is used for. I think it's used to switch it on/off but I'm not sure. Also does the thermistor need a lot of current? I saw the used MOSFETS can source a lot of it.by oniric - RAMPS Electronics
Thank you! Now back to basics, I'm waiting for some transistors to start playing with Arduino Mega and motorsby oniric - RAMPS Electronics
I saw on the wiki that it's possible to use an Arduino Proto Shield to build RAMPS. Do you think this has the same limitations of a breadboard?by oniric - RAMPS Electronics
Hi, I have this simple question for you: is it possible to build RAMPS electronics on a prototyping breadboard and make it work? I would like to build it but I'm not very good at solderingby oniric - RAMPS Electronics
Ok, so now I'm probably going towards RAMPS with Arduino MEGA, so in the mean time I can play a little with it It's probably the easiest solution for a noob like me! FPGA could be cool but I need community support to make this project! ^^' So better stay with RAMPS! Thank you!by oniric - Controllers
I simply want to get the best from my money. I saw that RAMPS electronic for example requires an Arduino Mega as the base. So it would be quite a useful investment to buy one so,in the future, I could attach RAMPS to it. At the same time Papilio can emulate an Arduino Mega board so maybe I can attach RAMPS to it too? Building a RepRap is my final goal, in the meantime I would like to have some fby oniric - Controllers
Hi all! This is my first post here. I'm very attracted by the reprap project but I have a very limited budget and also I'm not completely sure I'll ever assemble a fully working reprap So I would like to initially buy a development board and use it for other projects but with the possibility, when the time will come, to use it as the base for the reprap electronics. So, I searched the internetby oniric - Controllers