Thanks again for all this useful info. After doing some research of the parts needed I became with this bill of materials: Nema 23 - 2.4Nm and 1.8A (replacing the 4 nema 17 motors) 2-4 linear rails (was thinking on putting one linear rail on each corner of the bed/frame) 3 GT2 pulleys (40 teeth is enough?) Worm Motor Reductor for Nema 23 (dont know if its needed with this configuration) The smalby adrian_rg - CoreXY Machines
Quotethe_digital_dentist 4 screws are over constraint, as are 4 guide rails. Two guide rails and 3 screws should be ideal. The motors get out of sync whenever power is cycled. They jump a little. Some will jump forward and some jump back. The bed tilts and in the case of 4 screws, the bed bends and/or the support does, and if it get far enough out of whack, it will bind and won't move. It's muby adrian_rg - CoreXY Machines
Hello everyone, I've just finished the build of a big size 3D printer (400x400x400). However, I'm having some isues with my Z axis. I have 4 nema17 motors(84oz) with 8mm threaded rod lifting the heatbed (attached on a piece of light wood). The motors can lift the bed, but with the time, the bed has a tendency to break the "leveled state", so before every print I have to level the bed (most of theby adrian_rg - CoreXY Machines
Thank you very much for the reply! I ended up feeding the arduino with 5v via USB port and keeping the jumper con VCC-5v pins on RAMPS. I've done some prints and works perfectly fine (bed leveling works fine). It's not the best solution, but I think I'm going to change electronics in the near future (skr boards are getting popular).by adrian_rg - RAMPS Electronics
Hello everyone! I've been trying to install the BlTouch on the RAMPS, but when I connect it, the board starts to reboot (sometimes I'm lucky and I can check if the 3 axis move, but 90% of the time keeps rebooting). Reading through internet, I found that Arduino clones manages pretty bad the 12v to 5v conversion. So, how can I power that 5v pin in a safe way? Keeping all the time the Arduino powby adrian_rg - RAMPS Electronics
QuoteDust Maybe the heated bed is actually dead? You can wire this directly to the power supply.. does it heat up then? (this will continue to heat up uncontrolled till you unplug it) can you take a few photos oh how you have the bed to the external mosfet to the power supply connected? (have to check your wiring... as we are missing something) Wired directly to D08. It heated correctlby adrian_rg - RAMPS Electronics
QuoteDust Stop guessing.. measure things. Check with a multi meter you are getting power For the bed plug the -ve probe into D8 - plug (you have to use this -ve pin as this is what is switched on and off) plug the +ve probe into the D8 +plug Set the meter to DC voltage, if it doesn't auto scale set it to a voltage higher than 12v It should read 0 volts dc when off and 12v dc whenby adrian_rg - RAMPS Electronics
QuoteDust The RAMPS has 2 power circuits, on the board they are marked as 5A and 11Amp power plugs You need to supply 12v to both of these The 11amp power plug supplies 12v to the d8 mosfet The 5amp power plug supplies 12v to everything else (hotend, stepper motors, and the mega) Re the hot end. If the D10 LED lights the ramps is probably fine. Yes the electronics can die... the mosfets cby adrian_rg - RAMPS Electronics
Today I received the MKS MOSFET. Still not heating up.... I checked voltage with the multimeter and when I preheat the bed, not voltage goes out to the heat bed (also the led doesn't turn on). It is a faulty MOSFET or I'm wiring something wrong? I followed this scheme Also the hotend is not heating up. I tried to preheat the hotend to calibrate it, and also not working. In both cases the tby adrian_rg - RAMPS Electronics
The other day I was testing the extruder wiring. I pre-heated the extruder using Repetier-Host and the tempertature raised, but very slowly (to reach 190ºC it lasted between 3 and 5 min) and I started to suspect something was wrong. Today I wanted to calibrate the extruder and when I pre-heated it, the tempreture did't raise (Repetier showed a oscilation between 20-21ºC, so the thermistor seemsby adrian_rg - General
What a mistake (facepalm). Didn't see it was for 24V. Thank you very much for the fast answer. I'll buy the MKS then.by adrian_rg - RAMPS Electronics
Not sure if this is the correct place to ask this question, but I'll ask anyways. I'm building sort of 3D printer/CNC machine and I'm having problems with the heat bed. It is a 400x400 heat bed of 12V and dimensions 410x410x3mm (www.amazon.es/gp/product/B07DN8P2HG/ref=ppx_yo_dt_b_asin_title_o05_s00?ie=UTF8&psc=1) I also putted a relay (www.aliexpress.com/item/32663806352.html?spm=a2g0s.9042by adrian_rg - RAMPS Electronics