Re: RAMPS for Due!
okay :) I have video, and a image of my ramps-fd :) version 1 revison A [www.flickr.com] and [youtu.be]
View ArticleRe: RAMPS for Due!
Quotebobc I have updated the schematic and layout with some thermistor changes and other things Cefiar mentioned. I have routed a separate ground from the thermistor header to two of the ground pins...
View ArticleRe: RAMS or Megatronics for stepper control (not for 3d printer)?
These are basically the same thing as the A4988 or DRV8825's to drive, but yes they support more microsteps. Note that if you're after high speed, mirostepping is your enemy, as you'll only get a...
View ArticleRe: Your opinions on setting Vref
The DRV8825's can do a bit more current, and they support 1/32nd steps. The A4988's only support 1/16th steps.
View ArticleRe: Problem with Melzi or thermistors
Sounds like your thermistor tables are wrong. You either need to figure out what thermistors you have and set your firmware appropriately, or you need to create a table (either yourself, or get it...
View ArticleRe: Problem with Melzi or thermistors
thank you that helps! now I am soldering smd... the resistors are 10K and I replace them by 4K7. The beta value of the thermistors is 4066 as far as I know, where can I change that in Marlin?
View ArticleRe: How many extruders do you need?
hi bobc ! I have just tested 4 color printing in one single hotend. do you have yet tested the EXT4 ?
View ArticleRe: intel edison
All of the GPIOs are through an I2C port expander, so it will be too slow to drive steppers. Better to wait for the Tre or buy an UDOO if you want that sort of setup.
View ArticleRe: Problem with Melzi or thermistors
hi all, hotend thermistor works right now after changing the pullupresistor to 4K7. But I have still the problem that the displayed bed temperature is rising with heating the hotend. I dont have a...
View ArticleRe: intel edison
Im not thinking to use it for that. But I think if it could work. A person could put it into the SD slot then use it fore a network host for the ramps. Maybe it could even slice models too.
View ArticleRe: intel edison
I'd love to know what the cost will be for one-off, or even if it will be on sale for "ordinary" folk. Intel seem to be cagey about pricing. A wireless SD module is not new, the electric imp already...
View ArticleRe: How many extruders do you need?
I haven't build any boards yet, so no. I plan to send an order to get some boards this weekend.
View ArticleRe: intel edison
I guess a lot will come down to that. I hope they don't cost a arm and a leg. If it is cheap enough it could prove interesting to see what we could do with it.
View ArticleRe: How many extruders do you need?
Hi bobc! I just came across your work recently and I have to tell you that your work will have huge impact on new machines! Excellent work, keep on going! Can't wait to see your RAMPS-FD released!
View ArticleRe: RAMPS for Due!
Can some of you guys that are in the know update the ramps-fd wiki? v1A is out there now.. so It would be nice to have some details on the wiki... especially the faults found and any work arounds etc....
View ArticleRe: [Solved] RUMBA burned
Good! Some folks would have tossed the board for a new one. Better to repair than replace. While the RUMBA is 'open source' it's not very friendly. It's designed in Altium (I can't imagine how...
View ArticleRe: intel edison
Quotedissidence Im not thinking to use it for that. But I think if it could work. A person could put it into the SD slot then use it fore a network host for the ramps. Maybe it could even slice models...
View ArticleRe: RAMS or Megatronics for stepper control (not for 3d printer)?
Thank you for all the info. I think I'll go with the TMC260 chip TOS-100 controller, I contacted the shop say they are very good, diagnostic software is cool too. They support up to 256microsteps (the...
View ArticleRe: intel edison
It seems like Intel want to compete with ARM and get into the "maker" scene, but they are not willing to compete on price. Maybe they think their stuff is that good, or people will pay for the name,...
View ArticleRe: Extruder's thermistor spikes/Drops when HeatedBed reaching setpoint (95°C)
So, just wanted to share my conclusions on similar issue with my Melzi. I eventually reinforced the ground plane by soldering an additional cable directly to the ground pin of the heatbed FET and...
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