How is it going Max just checking inby cnc dick - Reprappers
Just want to check in how is it going I know you must be busyby cnc dick - Extruded Aluminum Frames
My guess is the strength and accuracy of the actual machine is more at fault but it could be the electronics I haven't run a machine with the standard reprap electronics yet. I did build my own very rigid floorstanding 3-D printer and the results are fantastic but I did use CNC control software. I bought a Arduino ramps 1.4 set up with drivers for $59 and I'm building a small printer now to see iby cnc dick - General
In less you have some extremely poor hot end you want this fan running full speed constantly all the time No matter what material no matter what. The plastic part your printing cooling fan you want control will say printing ABS would be totally off with PLA probably the first layers off and then come on gets to a small area like and antenna or some small diameter would be on fullby cnc dick - Reprappers
That's a strange looking set up probably Chinese where did you buy it might not even have a thermistor and might have a thermocouple is there any information with it if it has a thermocouple you going to have to modify it to have 100 K thermistorby cnc dick - Reprappers
Quotedrastic00 I am having this problem also. What command/speed are you using to set your fan? I have no idea why anybody would want to put the hot end fan through the software and electronics just connected to 12 V anywhere you can connect directly from the powerby cnc dick - Reprappers
Make sure that you have the same comport and baud rate set in pronterface as what your computer has for the Arduino in the device manager of your computer and then hit connectby cnc dick - Reprappers
Wow that is strange looking the only thing I could think of is the ribbon cables to your LCD and SD might be picking up interference. Try to route them so they nowhere near any motor wires. Secondly to prove if that's your problem disconnect your LCD and SD set up just by unplugging it from the ramps. And try running it from the computer through the USB with no SD or LCDby cnc dick - Reprappers
Quotesteffman Quotesidhabo Good going Hlias. Thanks for feedback. Always nice to see happy ending to problems And also very helpful for other people that might have the same problem. Many people miss out on that in forums, once they are happy on problem solved ..... Ha det gött Bosse Very true! so in the spirit of sharing what we learnt it turned out my hot end was broken (I tried takingby cnc dick - Reprappers
First thing those USB cables they give you for free are just that junk they are cheapest thing that they could possibly could get . Second you said that it does the same thing printing from the SD card did you still have the USB cable plugged into the ramps even though it's disconnected from the computer. It can pick up electrical interference from Stepper motor wires and power wires like a antenby cnc dick - Reprappers
QuoteIstale But I have two fans, one for my RAMPs board and one for my hot end. So one of them has to be... why do you say that you can put it directly to your power supply you can put it on the input feed to your ramps anywhere you have 12 V as many as you likeby cnc dick - Reprappers
I am not familiar with that board but they do sell a small board that takes a thermocouple input and changes it to a thermistor output. Your board might have the ability to read thermocouples I don't knowby cnc dick - Reprappers
First try the best USB cable you can get second change everything from 250000 Baud rate to 115200. Do you have a fan on the electronics you definitely should have one the drivers could be shutting down thermally or the two yellow squares by the 12 V input are thermal fuses if you're pushing things anywhere near the Max you definitely need a fan blowing over all of thisby cnc dick - Reprappers
There is no reason to put the fan through the firmware and electronics for the hot end unless you have an extremely poor hot end .Just wire it to the 12 V into your ramps so comes on when the 12 V is poweredby cnc dick - Reprappers
Are you sure you have a thermistor a lot of those cheap hot ends from China are equipped with thermocouples two totally different things. Does it read ambient temperature if it doesn't then there's something wrong obviouslyby cnc dick - Reprappers
I don't know if anybody's had real good luck with running normal stepper drivers with the Arduino set up I looked into I didn't try it seemed sketchy at best. Just wondering why you didn't go with a planetary geared stepper motor you can buy them in any gear ratio personally I have one on a extruder I built but haven't tested yet that's 100 to 1 with a larger diameter serrated drive wheel from aby cnc dick - General
with Nema 23 motors they have to be low amperage ones do you have the specs on the motors preferably you want motors around 4 to 5 V and 1.5 amp to 2 amp.Do you have the 12v dc to ramps boardby cnc dick - Reprappers
The hot end fan is usually wired directly to 12 V and runs constantly when power is on. The fan connection you are talking about is the part fan for cooling of the printed partby cnc dick - Reprappers
Then obviously it is the thermistor that's wrong or wiring buy some more one hundred K thermistors they are cheap plus it's good to have spares if you find out it's the thermistors throw the ones you have a way so you don't get confused with them again. And if you plug the hot end in the T-1 it's reading ambient. The thermistor works on variable resistance so if you have a bad wiring connection rby cnc dick - Reprappers
Do you have the the thermistor plugged in the T-1 which is the second place on the ramps 1.4. Secondly in the configuration H file do you have the right motherboard picked should be 33 make sure you don't have it set up for dual extruders. If the hot end thermistor is working correctly you can test this by temporarily plugging heat bed thermistor to the hot end spot see if it works should read amby cnc dick - Reprappers
Most timing belt pulleys are pretty good but they do have a small amount of tolerance you still have to go in and calibrate steps per millimeter. As to holes depending on the slicing software most print the holes a little small and is not much you can do about it calibrate by outside dimension. Calibrate your extruder very accurately first to best way to do calibration of the X and Y is use a diaby cnc dick - Reprappers
Set temp sensor one and two set them to zero check your wiringby cnc dick - Reprappers
Should be pretty cut and dry just look at any of the builds with the Rambo board connect it up that way the XYZ and e. Be careful when it comes to the home switches look very carefully make sure that you don't put power to the signal or the ground all you need is ground to signal for switches. Configuration of whatever firmware you use Marlin is probably the most popular is going to be a learninby cnc dick - General
Click on this link if you have Windows 7 or Vista it's near the bottom of the page it does different operating systems read carefully find your operating system follow the instructions I'm trying to helpby cnc dick - Reprappers
Try the best quality USB cable you have and keep it away from motor wires and power wiresby cnc dick - Reprappers
Okay it's a good sign that the computer asked that do you know how to get to the device manager on your computer. That's where you have to go and install or update driver what you want is in the drivers folder of Arduino. Again not to be sound mean but Do you have basic computer skills I'm trying to help youby cnc dick - Reprappers
Try a better USB cable and keep it away from power linesby cnc dick - Reprappers
Okay when you plug your USB cable into computer and Arduino does your computer say found new hardware. In other words is the computer seeing the board you can check by going in the device manager and seeing if it's thereby cnc dick - Reprappers
Quotejbernardis You say that when you tell it to extrude 100mm that it extrudes 100mm. I assume you don't mean this literally. Extrusion is what comes OUT of the hot end. What you want is to measure 100mm on the way INTO the extruder.by cnc dick - Reprappers