Re: HEAT BED PROBLEMS
the poly fuse on some ramps are cheap made...and blow quickly all will eventually start blowing as most heatbeds pull from 11-12 amps when they first come on. the best way to fix this is what i did...
View ArticleRe: How many Db15 pins for hot end?
The limiting factor may not be the pins. In the case of a Mendel90 for instance, the design calls for a ribbon cable. A 28ga ribbon cable is only rated at 1.4 amps per conductor. A 40 watt cartridge...
View ArticleRe: How many Db15 pins for hot end?
Yes good point. My original plan was to join the pins with something substantial which would feed a "proper" rated cable. I like the ribbon idea, I've got a set ready for my Mendel 90 build, but I was...
View ArticleRe: TB6560 Single Axis 3A Stepper Driver
The main issue with these chips is that they require a long step pulse. Marlin's step pulse is by default too short to trigger a step with these drivers. Teacup and Repeteir are pretty easy to get...
View ArticleRe: TB6560 Single Axis 3A Stepper Driver
The listing says 6N137 optocouplers. These are fast couplers.
View ArticleRe: Short circuit, something is broken but what?
Jep, MOSFET even started smoking when i was testing the stepperdrivers.. Thanks for the handout, im going to replace the Ramps and one of the stepperdrivers.
View ArticleRe: Short circuit, something is broken but what?
The mosfet on the RAMPS should be easy enough to replace, they are through-hole components.
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Re: RAMPS for BeagleBone
Quotecdsteinkuehler I am working on a BeagleBone Cape version of the RAMPS design, called CRAMPS. I have a stub page created in the RepRap wiki, and KiCAD design files are on github. The design is...
View ArticleRe: RAMPS for BeagleBone
To drive a touch screen it is best to use a purpose-built chip such as the XPT2046 or ADS7843. These have an SPI interface. There is an Arduino driver called Utouch for this chip, but the coordinates...
View ArticleRe: RAMPS for BeagleBone
The BeagleBone has support for a 4-wire resistive touch screen. I have not used a touch screen with the 'Bone personally, but I have seen reports where many others have (but not with a CRAMPS board...
View ArticleRe: Short circuit, something is broken but what?
Yeah but i couldnt find the right mosfet and ordering a new RAMPS cost me less time :) Everything is fixed now. Thanks for your help!
View ArticleRe: Short circuit, something is broken but what?
Quotenavyblueboss Yeah but i couldnt find the right mosfet and ordering a new RAMPS cost me less time :)For future reference (and it's not a bad idea to just replace at least the bed's MOSFET...
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Re: New TFT control panel for 3D printers
Production of this board has now started and I expect to have completed boards available from January 21. You can buy just the board + connectors from me, or complete kits including TFT display panel...
View ArticleUnipolar Headaches: An Irritated newb
So i have put together my printer. I have the board wired and jumpered and the firmware, although unmodified from it's original configuration, installed. I can activate the printer with Pronterface,...
View ArticleRe: Unipolar Headaches: An Irritated newb
You said pin 5 to purple, but I think you meant pin 6. If so, then your wiring sounds correct to me. Can you post a link to the datasheet for the motors?
View ArticleRe: Unipolar Headaches: An Irritated newb
I am still new, so take the following with a grain of salt. However, as far as the ramps board is concerned, I don't think the order of 1A/1B and 2A/2B matters much. You are just completing a circuit...
View ArticleRe: Which electronics is best for the E6D kraken
As DC42 days the Duet+Duex4 temperature noise issue is only really apparent at room temperature. I picked 1K resistors for the Duet specifically to improve the temp response at printing temperatures...
View ArticleRe: Unipolar Headaches: An Irritated newb
Quotedc42 You said pin 5 to purple, but I think you meant pin 6. If so, then your wiring sounds correct to me. Can you post a link to the datasheet for the motors? I did... I'll amend the original...
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