Re: Echo: SD init failed on RUMBA
Make sure that you have the connectors in the correct way, I struggled for a day with the sd card adapter that was provided, as the silk screen is in correctly labeled and they even shipped it plugged...
View ArticleAdvce on push-pull gate driver
I'm doing a little work on the Decapede project. I don't understand some features of their MOSFET gate driver although it looks like it should be a standard totem pole driver, so I am seeking advice....
View ArticleUSB Communication with Computer PSU vs 12v Supply
I was using using an ATX PSU (500W) with my RUMBA for a while now, but I just replaced it (because it liked to shut off in the middle of prints, and the 1A load on the 5v trick didn't work) with a...
View ArticleRe: USB Communication with Computer PSU vs 12v Supply
the name for what i think you have is on the tip of my toung, gaaaaa. i think it has to do with the grounds, if the ground lever are different things don't wanna talk.
View ArticleRe: Advce on push-pull gate driver
IMO the zener is there to limit the gate voltage to 15V. The only way I could see that happening is getting drain to gate leakage on the FET that is being driven. No idea how likely that is in this...
View ArticleRe: USB Communication with Computer PSU vs 12v Supply
Ground loop. How are you wiring up the AC side of the dedicated PSU? A pic speaks a thousand words here. A lot of people connect AC Ground to DC -VE (or DC Gnd - in this case same thing). If DC ground...
View ArticleRe: Replicape, a BeagleBone 3D-printer cape, is ready for pre-order
Ohmarinus, you are right, fixed the typo now. Cefiar, there are low pass filters on the analog inputs. This is to prevent any voltage spikes coming from the heater cables that often run parallel to...
View ArticleRe: RAMPS for Due!
Hello and super compliments to everybody for this board! I'm here to ask if is it possible to use this step driver with the RAMPS-FD: [www.massmind.org] Here you can see it working with the RAMPS:...
View ArticleRe: Rumba short circuit
After big help from Hardwarekiller its clear that both Processors and all Stepperdrivers are defect. So its basically completely broken, all other parts (D6, D1, C1 ...) are intact. Anyway big thanks...
View ArticleRe: USB Communication with Computer PSU vs 12v Supply
Dedicated PSU has the power cable going into the terminals as they are labeled. Green into ground (symbol), white into "N", black into "L". I have heard of the problem in other situations, I suppose i...
View ArticleRe: RAMPS for Due!
QuoteGordie Do you think it's possible? The step/dir/enable lines on RAMPS-FD are all 3.3V. You driver requires 5V. You will need to provide level translation to get your signals levels up to 5V. The...
View ArticleRe: USB Communication with Computer PSU vs 12v Supply
Usually it's the problem, as you get a loop caused between: Mains ground on Printer Supply to Mains ground on PC. Mains Ground on PC to DC ground on PC's USB. USB cable from PC to USB cable on RUMBA...
View ArticleRe: RAMPS for Due!
Thank you Cefiar your answers were very clear! I'm not a genius at electronics, I like to solder and build little circuits but I understand what you said. So for the logic leveler should I use a...
View ArticleRe: Replicape, a BeagleBone 3D-printer cape, is ready for pre-order
I just realized, there were no recent videos of the Replicape working. Here is one i took last night: http://www.youtube.com/watch?v=RWZTvY5xaU0
View Article10K Glass Bead thermistor replacement
Hi, I have been putting an RepRapPro Mendel kit together which I got a year ago but haven't had the opportunity to put together until now. Everything has gone fine until soldering the 10K Glass Bead...
View ArticleRe: RAMPS for Due!
Note: Those SparkFun converters you linked are uni-directional, so you may find that of the 4 channels, you only 2. For each stepper you'll need 3 signals (Step, Dir, Enable), and the signals all...
View ArticleRe: RAMPS for Due!
If we are talking about the THB6560AH, then according to the datasheet it has a logic threshold of 2V, so you shouldn't need a level converter BUT the circuit for that driver board [www.massmind.org]...
View ArticleRe: RAMPS for Due!
Could you use an ADuM3440 for level translation to external stepper drivers?
View ArticleRe: RAMPS for Due!
Thanks for your answers mates. And I hope my questions aren't OT. If so I'll open a new thread. bobc: Well I'm happy that my question gave you a reminder about the external connection of step drivers....
View ArticleRe: Replicape, a BeagleBone 3D-printer cape, is ready for pre-order
Hi eliasbakken, cool, it looks very good. The CNC-Software on The Beagle-Bone is Linux-CNC ? Good work. Have Fun Angelo
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