Hello everyone, We are now introducing Fixed Price Shipping in Malaysia, Indonesia and Brunei. All we want to do is spread the joys of 3D Printing and to make sure everyone can get access to the awesome materials we have in our store. This includes all 3D printers, scanners and materials. Singapore SGD 5 (Free Shipping for purchases above SGD 120) Malaysia SGD 30 Indonesia SGD 30by mekastudios - Indonesia RepRap User Group
Hello everyone, We are now introducing Fixed Price Shipping in Malaysia, Indonesia and Brunei. All we want to do is spread the joys of 3D Printing and to make sure everyone can get access to the awesome materials we have in our store. This includes all 3D printers, scanners and materials. Singapore SGD 5 (Free Shipping for purchases above SGD 120) Malaysia SGD 30 Indonesia SGD 30by mekastudios - RUG-MY
Hello, I'm trying to run dual Y steppers on RUMBA and Marlin, recently I found some settings under configuration_adv.h that allow me to do such a thing. I used #define Y_DUAL_STEPPER_DRIVERS under confirguation_adv.h It seems like a really easy solution to my problem. But after trying and rewriting a whole load of code, i'm still getting the same error. (attached in the notepad file) Canby mekastudios - General
Hello, Just an update! We've got all the movements working! Had to change the z-axis to lead screws! and even had to readjust the x and y axis! but it's all working fine now. The issue now is with the extruder, I can't get it to constantly stay turning. There is a lot of high speed turning then stop, turn then stop. This doesn't really work well for extruding concrete. Is there a way forby mekastudios - General
I have a question. I've wired my motors for the Y axis and Z axis in series. How does that affect the current limits? I guess what I am asking is, can i now tune my pots to double the VREF for the Y and Z axis? Wiring in series, does it half the torque? How does wiring in series affect anything? plenty of people I work with are confused about this. is it possible to actually wire up 4 mby mekastudios - General
@Dust Ok great. Thank you very much for the information! Shafiqby mekastudios - General
I was looking through configuration_adv.h and I found this. // Microstep setting (Only functional when stepper driver microstep pins are connected to MCU. #define MICROSTEP_MODES {16,16,16,16,16} // [1,2,4,8,16] // Motor Current setting (Only functional when motor driver current ref pins are connected to a digital trimpot on supported boards) #define DIGIPOT_MOTOR_CURRENT {135,135,135,135,135}by mekastudios - General
I figured the axes would be too heavy for a belt drive to work reliably. Hence we chose a chain drive. Belt drives may be able to work too actually. And we were inspired by some of the other concrete 3D printers we saw. It all seems like a guessing game right now, we're running out of time on this project, so at the moment, it's really about just getting the lead screws to work well. Shaby mekastudios - General
@dc42, The Z-axis does not need to support the concrete print, we've made the bed stationary. The bed will be a trolley that we can pull out once the print is done. @PRZ I would imagine concrete 3D printer needs to print very slowly. At the moment, we move at about 20mm/min. Which i suspect may be too slow. @cozmicray We tried a very quick iteration of the Pulley system and although it workby mekastudios - General
Yesh, I lowered the acceleration and jerk settings as you mentioned. Just made an order for leadscrews. Time is of the essence here! @Cozmicray Ok now I get what you mean! will try that! Shafiqby mekastudios - General
Ok now. We're having even more errors. My Arduino is not compiling!!! Ah damn. Update: Crisis solved. It's still just the Z-axis headachesby mekastudios - General
I'm not sure I get what you mean with the pulley and counter weights. We're having such a hard time with the z-axis, the movement is really unreliable. i'm jut about to just change it to a lead screw system. What do you think? I'm not very sure about the connection between the jerk settings, acceleration and speed. When does it all come into play? This build is part of a project we're coby mekastudios - General
Hi, Currently I've made changes to the Z axis only. I've set it to 1/8 microstep. The Jerk settings are 20 mm/sec Acceleration is 100 mm/s^2 Z steps/mm is 100 Homing_feedrate is set to 200 mm/minby mekastudios - General
Hello everyone!, We've got everything working alright now. except the Z-axis. Which is such a pain at the moment. I suspect we our motors are skipping steps, but we can't seem to identify the problem for sure. One of the things is also that the weight of the motors are a problem. Would shielding the wires really help? Here is a video, please let me know what you think. and how we canby mekastudios - General
@JuliaV, O yes. It took us a while to get this right. @Dust, thanks, but ours is currently already set to false. Which means it should not turn off. Had a bit of a disaster the other day when the Z axis came crashing down. Shafiqby mekastudios - General
@cozmicray, Thanks for the advise. Yeah I think we'll have to think about using motors with brakes. In this printer, the bed is stationary. The X, Y and Z axis are moving, this would make it necessary to have steppers with brakes on the z-axis. Or maybe I can set up a nice little end g-code for the extruder to rest after it has finished printing. The printer has a build capacity of 640 xby mekastudios - General
Hey dc42, yeap after some confusions, we've now wired them in series. It's now probably all about weight distribution and keeping the X-axis straight while moving up the Z-axis. We're also having a problem with the Z-axis keep it's position. After moving up, the motors will suddenly lose it's toque and the axis just falls. This can be a bit dangerous. I'm sure there is a setting on Marlinby mekastudios - General
@dc42, We are going to use a 10mm nozzle, designed by us. I guess for the extruder portions, we're going to have to make changes as we go along. My main concern really is the X, Y and Z movement at the moment. @cozmicray Yesh! I'm in need of some serious cable management. Thanks for the suggestion on drag chain. I As for the endstops, I really just wanted to check everything first than doby mekastudios - General
Great. Thanks for the advice. Here are some photos of our build at the moment.by mekastudios - General
Hey cozmicray, Your thoughts on dip switches were spot on. Ours were all over the place, have switched them all off to Full Step. I will have to get an oscilloscope, not very familiar with electrical and electronic systems. It's a good learning experience this project. I checked the wires on the motors as Dust and dc42 mentioned and that was one part of the problem too. The wires were a bitby mekastudios - General
At the moment, after sending instructions to the motor, when we measure the output it's at 2.8V. I wasn't sure why this is happening. But then now i realise it may be the wiring. Shouldn't just believe the wires.by mekastudios - General
O sorry, I just wanted more people to read and hopefully help. I'll be sure to delete them. Shafiqby mekastudios - Firmware - experimental, borrowed, and future
Ah yes. That's true also. The color codes may not necessarily be universal. Although I do hear the motors energising, there is that low hum.. But ok, yet another thing to check. Shafiqby mekastudios - General
Ah ok. sounds like there is a lot of testing and calibration to do. I shall get to this. currently redoing all the settings with the older version of Marlin. Thank you so much for the help so far.by mekastudios - General
Yeah I guess so. But would that affect the extruder too?by mekastudios - General
We're using a 24Volts, 14.6 Amp power supply. When I check the Main-PWR plug on the Rumba, it says 24V.by mekastudios - General
Hey, As for thermistors. we hooked up a 100k thermistor, exactly as you mentioned. I did not notice this was Marlin-RC - Thanks for pointing that out!. the problem is really with the voltage probably. We're not feeding it enough. How do I check this? Also about the m119, will have to do that and rectify it. Don't think I did a very good job with the wiring there though! thanks for the iby mekastudios - General
Hello everyone, We've been working on this for quite a while and finally all the hardware is set up. We are trying to get Rumba + Marlin working now. The control software we would like to use is Simplify3D with a custom profile. Everytime we turn on the motors, you can hear the humming of the motors being energised. But there is no movement when we try to move the X, Y and Z Axis. Even witby mekastudios - General
Hello everyone, We've been working on this for quite a while and finally all the hardware is set up. We are trying to get Rumba + Marlin working now. The control software we would like to use is Simplify3D with a custom profile. Everytime we turn on the motors, you can hear the humming of the motors being energised. But there is no movement when we try to move the X, Y and Z Axis. Even witby mekastudios - Singapore RUG
Hello everyone, We've been working on this for quite a while and finally all the hardware is set up. We are trying to get Rumba + Marlin working now. The control software we would like to use is Simplify3D with a custom profile. Everytime we turn on the motors, you can hear the humming of the motors being energised. But there is no movement when we try to move the X, Y and Z Axis. Even witby mekastudios - Firmware - experimental, borrowed, and future