Show all posts by user

Rambo Forum - 10 years ago

A year ago or so I bought a Rambo version 1.0d from ultimachine. I had been using the sanguino board for two of the Prusa Mendels that I had built but was tired of the need to replace Pololu's any time I made the mistake of overdriving them or something got jammed or... Any of the many reasons I killed one. While setting up and fine tuning the Prusa I had made many of the errors one makes and

by mmadore - Controllers

Re: WTD: Rambo, smoothie or replicape - 10 years ago

ultimachine.com has rambo boards. bought mine there

by mmadore - Wanted

Re: Y axis skipping - 10 years ago

Prusa finally printing reliably and clearly. I had noticed some slack in x belt and tightened it. I changed the Y axis stepper. Y was still a problem so increased amperage in firmware. This cured the Y axis skipping. Was using the ecksbot quick change extruder body on the ecksbot X carriage. This became loose and the idler could never stay tight. It turns out that my J-Head was overheating

by mmadore - Reprappers

Re: Y axis skipping - 10 years ago

well I'm printing at 30mm/s now and have two shifts in the print. I've tried swapping boards, same effect. mike

by mmadore - Reprappers

Re: Y axis skipping - 10 years ago

After reading some more, thought I'd try setting the print speed to about half it had been to see if I've been over driving it. So far it is behaving very nicely... Too bad, the last printer I built handled speed no problem. Time will tell. Mike

by mmadore - Reprappers

Re: Y axis skipping - 10 years ago

I.ve been having the same issue with my prusa for a while now. I am using Marlin and pronterface with slic3r. My board is a RAMBO. it doesn't skip every layer, just the odd once in a while. Tried increasing current to the y axis stepper, no change. Mike

by mmadore - Reprappers

Re: Prnt shift with RAMBo controller - 11 years ago

I can't see any settings in the firmware that look like check endstops during print... Do you know the exact line wording? Also which file would it be in? Thanks, Mike

by mmadore - General

Re: Anyone interested in RAMBo Electronics, for cheap? - 11 years ago

I'd be interrested for sure. While I've had some issues with the RAMBo, biggest being support as there are too few users willing to log in and help out with issues, the RAMBo is a nice design. It's unfortunate that it does not have an SD slot natively. The locking clips for the motor and endstop wires are a great idea, but I've had issues with the X axis wire end. For some reason it does not

by mmadore - Controllers

Prnt shift with RAMBo controller - 11 years ago

I've got an ecksbot/prusa printer with a RAMBo controller. Sometimes the print starts shifting forward on the Y axis. It is always with the Y axis. Each layer gets progressively further forward. If tried adjusting the Y axis current in the firmware with no difference. I've changed the Y axis motor with no change. Any ideas? Thanks, Mike

by mmadore - General

Re: Can admin run a poll on filament usage? - 12 years ago

3mm only Mostly PLA , some ABS

by mmadore - General

Re: Finish of RepRapped parts? - 12 years ago

Pointedstick, Do you have a site highlighting how your reprap is put together, what electronics, what motors, what firmware, what slicer, what print interface, etc? I've been struggling with getting my reprap to print more consistently and with better resolution. Obviously the materials selected to create the reprap affect the outcome. I'm hoping to improve my printing capabilities without so

by mmadore - General

Re: Teacup, Pronterface, Sfact... oh my! - 12 years ago

Ross, Look forward to seeing some pictures of your new "Y" table support. Nice and elegant style to it. I like the incorporated end stop in the bearing holder. I've found that PLA sticks to glass most of the time, but some of the translucent PLA is hard to get to stick. For those I use a piece of glass that I frosted with a sand blaster. Gives just enough grip for the PLA to bond to whil

by mmadore - Reprappers

Re: odd print behaviour - 12 years ago

Nophead, You got it bang on. A broken motor wire, just inside the casing. Spliced new wire in and all was working again. I placed a zip tie with a loop in the head around the motor and tied the wiring harness to the loop to act as a strain relief. Hopefully if it breaks again it will be beyond the strain relief. Thanks all, Mike

by mmadore - Sanguino(lolu)

odd print behaviour - 13 years ago

Recently while printing the calibration prints and odd thing occurred. The extruder motor suddenly seems to extrude for the left side of the print job, but just jitters when printing the right side of the print job. In an effort to cure the problem I have downloaded the latest sprinter firmware and uploaded that. I have downloaded and installed the latest version of Kliment's printrun. I h

by mmadore - Sanguino(lolu)

Re: Sanguinololu BOM (DigiKey) - 13 years ago

It seems that while I saved this BOM as a public BOM, it doesn't show up for everyone. Here is the CSV file instead.

by mmadore - Sanguino(lolu)

Sanguinololu BOM (DigiKey) - 13 years ago

I created a DigiKey BOM (47864) to compliment the Mouser BOM I found on I've taken out the screw terminal and left in the 4pin molex for power. Enjoy, Mike

by mmadore - Sanguino(lolu)

Re: PLA to ABS glue? - 13 years ago

I used Gorilla Glue. Seems to have worked just fine.

by mmadore - Reprappers

Re: Filament Spindle - 13 years ago

If sized right, I could see adding a hole through the foot base of the footed vertices and sliding the top rods front and back through those new vertice holes. Might have to extend the foot a bit to accommodate. Nice idea. Well done. It's been a while since this was posted. Any updates since then?

by mmadore - Look what I made!

Re: Strange Z axis behavior - 13 years ago

I remember that when my motors were connected backwards that they would act much the same as you describe. Can you try flipping the motor connections over to see what happens? Mike

by mmadore - Reprappers

Re: How to test stepstick - 13 years ago

Where did you get the stepsticks and how do they compare to pololus?

by mmadore - Reprappers

Re: EckerTech - 13 years ago

I ordered a set from EckerTech and it came in quickly. I ordered from another seller as well and it came a little slower. Of course I'm in Canada, so the border adds some time and EckerTeck is based in Canada. I have to say that EckerTech's plastic parts are very high quality. The prints are nice and clean. The orientation of the parts can sometimes make a large difference in strength of the

by mmadore - Reprappers

Re: Firmware Uploaded (I think) What next? - 13 years ago

I do know that with 3 dead pololus, I was able to manipulate the X axis. I think that this would equate to only having one axis plugged in. What software are you using to communicate with your sanguino? Mike

by mmadore - Sanguino(lolu)

Re: Got Sanguinololu 1.3a, now what? - 13 years ago

Thanks for all the help. I inserted new Pololu boards, and all is well. Printed off a couple of handy spool holder clamps. Once I've had a chance to have fun with the printer for a bit, I'll create a new post summarizing errors and fixes that worked so others can learn from my mistakes. Thanks again, Mike

by mmadore - Sanguino(lolu)

Re: Got Sanguinololu 1.3a, now what? - 13 years ago

Looks like two Pololu's died while testing the setup. I reversed the connections for the Z axis motors, then swapped the Y and Z axis Pololus, and voila! Z axis now works and goes to home gently. Now of course the Y axis isn't working. Swapped the pololu's again and Y works, Z doesn't. I suspect that the Extruder motor leads need to be swapped as well. I'll test that next.

by mmadore - Sanguino(lolu)

Re: Got Sanguinololu 1.3a, now what? - 13 years ago

So far so good. I swapped the extruder motor wiring for the Z axis wiring and jogged the extruder no problems. So the extruder motor is functional. I moved the end stop for the X axis to the other end and now Y and X home properly. The only problem left is the Z axis. If I jog Z +10 it moves towards the end stop. If I jog Z with a -10 it does nothing. If I home the Z axis it moves toward t

by mmadore - Sanguino(lolu)

Re: Got Sanguinololu 1.3a, now what? - 13 years ago

Oh the excitement! An Arduino I ordered came in today, so I quickly created an ArduinoISP and plugged in one of the new ATmega644P chips. Loaded the bootloader, success! Moved the chip over to the Sanguinololu, loaded Sprinter. Success again! So now I can actually make Printer Interface (Pronterface?) move the axis. So cool. Next problem... Seems the end stops are reversed or something.

by mmadore - Sanguino(lolu)

Re: Got Sanguinololu 1.3a, now what? - 13 years ago

I couldn't say what state the fuses are in. The lad I bought the board from has made many before and is a strong contributor to the community I believe. He assures me that he loaded the bootloader and tested the board, moving all the steppers with it, no problem. I'm beginning to wonder though if I'm doing something wrong since I've not yet had a successful connection with any machine I've hoo

by mmadore - Sanguino(lolu)

Re: Error burning bootloader atmega1280 & 644P - 13 years ago

With the USB port towards me, the screw pots are to the right. Thanks, Mike

by mmadore - Sanguino(lolu)

Re: Error burning bootloader atmega1280 & 644P - 13 years ago

marnargulus Wrote: ------------------------------------------------------- > When you plug the Parallel port in you should get > a very faint light in the power LED, and when you > plug the USB in it should go full brightness. Let > me know if that DOESN'T happen, because then it is > a board problem. Note: When I tried this with the Pololu's installed, no faint light with the P

by mmadore - Sanguino(lolu)

Re: Got Sanguinololu 1.3a, now what? - 13 years ago

I setup a WinXP workstation with a parallel port to try yet again. No joy. I've recreated the dapa cable twice, swapped USB cables. Nothing seems to work. I ordered an extra atmega644P chip and swapped it in, still can't access. So far that makes 4 OS's tried. Ububntu on an old Pentium laptop (Parallel Port available) Windows7 on an Netbook. Windows Vista on a laptop WindowsXP on

by mmadore - Sanguino(lolu)