Re: HEAT BED PROBLEMS
Waitaki, Yes it is solid copper on the bottom. I have tried to connect a ssd relay to it and that just moves the heat problem from the board to the relay it takes about a minute or two and then its to...
View ArticleRe: HEAT BED PROBLEMS
Have a look at the attached pic of the back (solid copper side). You will see 2 holes which are plated through to the other side (the copper tracks side). If you look closely at the holes you will see...
View ArticleRe: HEAT BED PROBLEMS
Ok, Thanks I see what you were talking about now. I am going to drill out the holes, cause this board does not look like that, but the conners look good though... Thanks for all the help. I will let...
View ArticleRumba board
Guys I have a rumba board with a problem I though it had a faulty USB port but I replaced this with no effect When I plug into laptop the power light flashes for a split second, that's all. Sometimes...
View ArticleRe: Rumba board
That's what we have: [www.reprap.org] On what you have, you have to ask the vendor ... or build an electronics from schematics' available.
View ArticleRe: HEAT BED PROBLEMS
@Waitaki, heated bed MK2a, which I had once, have the same problem... At that time when I measure the resistance between the two lines it is 0.02 ohm, then I was advised to remove the copper layer by...
View ArticleRe: Rumba board
QuoteTraumflug That's what we have: [www.reprap.org] On what you have, you have to ask the vendor ... or build an electronics from schematics' available. Sorry, I dont understand what your saying?
View ArticleRe: Solution to endstop cross talk?
As A2 and Learner have sort of mentioned, if you're going to twist wires, you should: 1. Twist your motor wires (per coil) as well as your endstop wires. 2. Twist the endstop wires the opposite...
View ArticleRe: Rumba board
The link Traumflug posted is the latest schematic that RepRap.org has. If there is a later one, you need to talk to the people who sold you your RUMBA board (or the people who designed RUMBA) to...
View ArticleRe: Solution to endstop cross talk?
I would add that using "normally closed" contacts, while not improving interference behavior, is safer. In case a wire get broken (could happen at soldering point, for example), the axis should simply...
View ArticleRe: Solution to endstop cross talk?
QuoteCefiar I suggest we add this text to the wiki page. Who's "we"? It's YOU. :) That said, I don't think twisting direction or the number of wires twisted at a time makes much of an electrical...
View ArticleNeed some advice or reviews on SainSmart products
I'm a new to the 3D printing world, am in the process of choosing & buying the patrs for a 3D printer I'm building, and I've been debating on whether I should go with an *official* more expensive...
View ArticleRe: Solution to endstop cross talk?
Twisting wires work for cross-talk between them, if both would be signals at a higher rate it might work, like in ethernet cables. Tho in ethernet its not only for that, also for debugging, so a...
View ArticleNew build / Rambo problem
I built a prusa about a year ago and it has worked flawlessly since. I used a 12v p/s and the Rambo 1.1b board and marlin firmware with pronterface. I am now trying to build another printer using a...
View ArticleRe: Need some advice or reviews on SainSmart products
I purchased a SainSmart Megatronics 2.0 kit with GLCD back in February. It was lovingly packed (can you sense the sarcasm?) by someone who didn't care, and the "kit" was a pile of random parts heaped...
View ArticleRe: New build / Rambo problem
You need to connect the thermistors or use 100K resistors to simulate them.
View ArticleRe: Solution to endstop cross talk?
QuoteNoobManBut in case of our endstops we dont have a frequency to speak of. Not the endstop its self, but other cablings in this area, like stepper motor wiring. "Antennas" do not only send, but...
View ArticleRe: Solution to endstop cross talk?
Yes, i think by "cable cross-talk", per se i might understand something bit different, basically for me that means the wires inside the cable interfere with each other. We would need a freqency first...
View ArticleRe: New build / Rambo problem
So even though I am not plugging in the EXTRU or HB yet, I need the thermistors in place to test the motors? Both of them? That's an easy fix if that's it. Thanks. I will try.
View ArticleRe: Solution to endstop cross talk?
As for noise, it doesn't matter if the switch is NO or NC. Voltage induced in the wires by the electromagnetic field generated elsewhere, will be able as well to "rise the ground" or "drop the...
View Article