Re: RAMPS for Due!
This is a very interesting and quite surprising development! I had hoped a manufacturer would pick up the design, just not yet :) I would be somewhat amazed if they built 2000 boards without checking...
View ArticleRe: I'm soldering, couple of questions.
A very nice thing to have around - a little lab grade power supply with meters. You can get these pretty cheap on the auction sites. The cheap ones don't put out a lot of current, but you aren't going...
View ArticleRe: RAMPS for Due!
Looking at the pictures, I would seriously doubt it! They've populated all the standard fuse positions with PTC's. There is a reason we've moved away from PTC's (as has RAMBo), and they obviously...
View ArticleRe: RAMPS for Due!
I can't read any markings on the PTCs but it is possible they have used devices rated for 24V. Still, it is a pity because it was a design intention to move away from PTC fuses. Apart from that, I...
View ArticleRe: RAMPS for Due!
I'm planning on buying one to use with 24V. Will replace the PTC fuses on day 1. Let's also see if they changed anything else or just the fuses. For 30$, it worth it.
View ArticleRe: RAMPS for Due!
They replied to my comment saying they're going to change them, which is a good thing. Once they do I'll amend my post above. bobc: For the 11A rating, there are NO PTC fuses available from Bourns...
View ArticleRe: I'm soldering, couple of questions.
QuoteCefiar Quotewaitaki You can also use the "diode" function on the meter to illuminate those surface mount LED's. I've got a few meters that disagree with you on that front. :/ Strange? I have 3...
View ArticleRe: I'm soldering, couple of questions.
Some meters are set up to source a very small amount of current in diode test mode. The idea is to not harm a very low current part. If you have one of those 100's of ua limited meters, it's not going...
View ArticleRe: RAMPS for Due!
...... and if you run them above their voltage ratings they explode .... and if you run them inside their voltage rating they may explode (eventually) .... and their trip point varies with air flow...
View ArticleRe: RAMPS for Due!
QuoteCefiar They replied to my comment saying they're going to change them, which is a good thing. Once they do I'll amend my post above. bobc: For the 11A rating, there are NO PTC fuses available...
View ArticleRe: RAMPS for Due!
I noticed a cheaper fuse holder at Digikey [www.digikey.com] which we could consider for a Rev B. This is a similar type to the one used on RAMBo. I was thinking that Geetech could reduce inventory by...
View ArticleRe: RAMPS for Due!
As long as you do not want to go over 20A that's a fine part to use. It's Nylon, so there's probably not a lot of margin in the part for operation at higher current.
View ArticleRe: RAMPS for Due!
From what I understand, the max fuse we're suggesting is 15A, so that should be fine.
View ArticleI'd like to build a 3D printer, and I'd like to start with choosing the best...
So I'm about to start a 3D printer project, And after much time spent online I get the sense that your Controller / Firmware / Stepper Drivers / Stepper Motors all have to "play nice". And if you...
View ArticleRe: I'd like to build a 3D printer, and I'd like to start with choosing the...
Almost all the Reprap electronics drive both of the Z steppers in parallel. Part of the reason is that due to the way they are driven, if one fails to step, the other ALSO fails to step, so your Z...
View ArticleRe: I'd like to build a 3D printer, and I'd like to start with choosing the...
Thanks for the response, I must not have been very clear with my wording, because I don't plan on having any of the hotends moving independently. The "dual x" and "dual y" motors would be for...
View ArticleRe: I'd like to build a 3D printer, and I'd like to start with choosing the...
As mentioned above, your speed is limited by the plastic rather than by the speed / power of the motors. Positioning accuracy will go up with things like fancy drive screws (except for their coarse...
View ArticleRe: I'd like to build a 3D printer, and I'd like to start with choosing the...
Thanks for the tips. I plan on running belts. And I would probably go for .5 mm hot-end for what I do, but wouldn't mind having one of the nozzles be .35 mm (or .2 mm). What are the downsides to...
View ArticlePOLOLUSTEPPER-1.fp missing from official Repo?
Hi There, I'm currently re-spinning the Gen-7 board to add support for additional things, (descriptive, I know), and I'd like to add some more stepper drivers. To be honest, I'm a Cadence/Altium man,...
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