Re: Mendel: what termistor to use for heat bed?
OK. Btw, welcome to reprap forum. Dont hesitate to post here. Whatever your problem is, we are guaranteed to make it more complicated than it was initially. (:P)
View ArticleRe: TB6560 with arduino?
The 6064 costs more but has motor power on protection not present in the 6560.
View ArticleRe: teacup error
ok thanks i will try that. i also noticed in repetier host program the feedrate is greyed out and i can not move it. any suggestions?
View ArticleRe: (UV) Laser for pcb photoresist exposure
I had the same idea about fixing the photoresist with a reprap today, which lead me here and to this post. I think using a small lens and an led would be perfect. I tried a lens from a cd player (high...
View ArticleRe: (UV) Laser for pcb photoresist exposure
If the head had a drill built in, the board could be done quickly and with good alignment. I'm not sure about drilling before etching though. Might need a way to match up the alignment from fixing the...
View ArticleRe: Reprap Arduino Due Shield project - looking for helping eyes.
Cefiar Wrote: ------------------------------------------------------- > > Connectors: Due to RAMPS cramped design, the > connectors are all over the board, instead of > purely at the...
View ArticleRe: Ramps 1.4 Arduino Mega 2560 Scripting software
What is your operating system, and what version of Python do you have installed? Win 7 has far less issues than XP, conversly, the newer python - 3.x is unsupported, you need 2.x.
View ArticleRe: Reprap Arduino Due Shield project - looking for helping eyes.
@bobc Maybe move to a 4-layer board with power and ground planes on the inner two layers? That should make it easier to expand the board footprint without interfering with the edge interface pins. Of...
View ArticleRe: Reprap Arduino Due Shield project - looking for helping eyes.
he was using Kicad all along :)
View ArticleRe: TB6560 with arduino?
whatever you choose, is at least twice more power then pololu, and tb6560 same price...so... :)
View ArticleRe: Reprap Arduino Due Shield project - looking for helping eyes.
4 layer is an option I could use with Kicad, but I would like to avoid it because it bumps up the cost significantly. With iteadstudio etc, it is cheaper to double the board area than go to 4 layers....
View ArticleRe: Reprap Arduino Due Shield project - looking for helping eyes.
Welcome to designer's dilema. That is taking decisions without being sure they are good. And never receiving confirmations that they were right ones, even later on. Doesnt feel so nice to be inside of...
View ArticleRe: Reprap Arduino Due Shield project - looking for helping eyes.
Oh and i would change the 2N7002, coz i think its not a good choice for logic, smells of analog. I would check for a logic level one (@parametric search try Vds=16-20v).
View ArticleRe: Reprap Arduino Due Shield project - looking for helping eyes.
That's useful feedback, thanks :) (As an aside, Kicad doesn't support padstacks yet, so pads are replicated on all layers, which explains routing difficulty. Kicad is getting support from CERN, so...
View ArticleRe: Reprap Arduino Due Shield project - looking for helping eyes.
I am pretty much a DIY and hands-on kind of person and plenty of bruises. But about board making, routing, component choice, etc, i find the commercial aspects and DIY to be irreconciliable. Its...
View ArticleExtruder heater overpowered to death?
Ok so I know this happens often but I think I worked out why in my case and searching hasn't answered my question. My extruder heated up for the first time last night and then this morning nothing....
View ArticleRe: Extruder heater overpowered to death?
Math is correct, but its how its supposed to be. Hotend resistors are over-driven, because 3w of power wont melt abs at 250C. Measure with multimeter between the leads and heater block, it can be a...
View ArticleRe: Reprap Arduino Due Shield project - looking for helping eyes.
Oh and lets not forget about board size, the commercial is interested to have it small as it pays for it, the DIY the extra board space costs next to nothing and so diy is better off with something...
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Re: Reprap Arduino Due Shield project - looking for helping eyes.
Ok, I have been playing with the layout a little, and I think I have something interesting. I've added a sixth stepper driver (color printing!) and an extra FET (will need another thermistor). Board...
View ArticleRe: Extruder heater overpowered to death?
Ok thanks. Checked for shorts and couldn't find any so I'll just replace the resistor and hopefully it was just a bung one from the factory. This time I'll be smart and order spares haha
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