Re: RAMPS for Due!
Quotecdsteinkuehler Quotebobc Status update: I've sent gerbers for PCB manufacture to Itead, now waiting for delivery. I was unaware of this vendor, it looks like they have great pricing! I assume the...
View ArticleRe: RAMPS for Due!
Quoteturutk Do you consider the second usb port on due for using it with usb memory sticks? Also will we be able to use a touchscreen with ramps-fd? USB host should be possible, it's a simple matter...
View ArticleRe: RAMPS for Due!
After repairing my Due, I have been getting it set up with the Getech v1A RAMPS-FD. I'm not impressed with the Getech board, apart from the issues previously noted, poor washing, sub-spec components...
View ArticleRe: RAMPS for Due!
I prefer ro buy my board US made, spend a little extra for the boards, but I've had VERY good experiences with Advanced Circuits in CO ( 4pcb.com ). They have a good special for two sided boards up to...
View Article6 wire motor
Hi all, Just a question. I have purchased six wire motoRs. I know they can work on 4 wire. My question is, Im I gone loose torque ?
View ArticleRe: 6 wire motor
They will be fine. the 5th and 6th wires are just centre taps. They can be left unconnected but insulated. You wont loose any torque. from the wiki Quote "pair" wires on 6 wire motors On six-wire...
View ArticleRe: Which controller?
personally i dont like all on one solutions. One silly mistake and the entire board is junk. I would recommend something with plug in drivers like a ramps. I like the look of the rumba board but...
View ArticleRe: Which controller?
I chose RAMPS for my first board exactly the reason lazzymonk points out. One mistake and you get to replace everything. Maybe for a subsequent build I'd chose a different board, but I like having at...
View ArticleRe: Which controller?
Thanks, I went with a ramps 1.4 for just those reasons. Also technology is changing so fast it might be good to wait a while to see what comes out next. So I picked up the low cost ramps to get going...
View ArticleUnusual stepper ratings - vref settings for new Melzi
Got my new Melzi board today. I've hooked it up and very briefly tested it. Mostly appears to work except the LED on the board hasn't come on once for some reason. Bit odd but not the end of the world...
View ArticleRe: Unusual stepper ratings - vref settings for new Melzi
A certain value for vref will give a certain current (amps) value for the motor output. The exact math relation for the drivers you have is something to research yourself, e.g. if you use pololu...
View ArticleRe: Unusual stepper ratings - vref settings for new Melzi
It's not just the LED though it seems. Now I've actually tried all the functions it seems there are 3 issues with this new board: 1) No LED coming on at all. Not once. 2) The extruder stepper does not...
View ArticleRe: Unusual stepper ratings - vref settings for new Melzi
Edit - I'm slightly confused about the steppers now I've been researching them more. This is aside from the issue with the board, which I believe is faulty. The ones I have are: 17HS3404N - which are...
View ArticleRe: Unusual stepper ratings - vref settings for new Melzi
If steppers have no label, you can still make sure what are they if you measure their coil resistance with a digital multimeter. Between 30 ohms and 1.65ohms the difference will be hard to miss. The...
View Articlepibot info
I'm very interested in some electronics called pibot I don't know if anybody has looked into it or had any experience with it there out of stock at the moment if anybody has any thing to say good or...
View ArticleRambo Forum
A year ago or so I bought a Rambo version 1.0d from ultimachine. I had been using the sanguino board for two of the Prusa Mendels that I had built but was tired of the need to replace Pololu's any...
View ArticleUploading marlin to printrboard, resulting in half speed/length etc
i just got this problem. never experienced anything like it and i'm having a hard time figuring it out. So, i've run my printer for a long time without issues. suddenly i got some problems with my y...
View ArticleRe: Unusual stepper ratings - vref settings for new Melzi
Thanks - so yeah, these are a high load then and not ideal from what you've said. It's an unwelcome cost for sure but I'd rather have it correct and help ensure longevity of the board. The ones my...
View ArticleRe: Unusual stepper ratings - vref settings for new Melzi
I think for what you have there its Ipk=Vref/(8*Rs) where Rs=0.11 (?) and therefore should try a setting of Vref=0.50v to start with. So try setting vref to half a volt and see if Z movement gets...
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