Re: Melzi 2 step motors on same driver
Wire them in series if you need more torque. The downside is less speed.
View ArticleRe: ramps 1.4 registering very high temperatures
Sounds like you've fried the Arduino somehow. You will probably find that you have a short between the hot end heating element and one pin on a thermistor input. Did you have the hot end or heated bed...
View ArticleRe: ramps 1.4 registering very high temperatures
If you unplug the thermistors from the Ramps, you should see 0C type readings. You *may* also trigger a minimum temperature error (it's telling you the thermistor is unplugged...). If you still see...
View ArticleRe: Pibot vs ramps
The fact that it works with a (possibly modified) open source software product is only half the story. The schematics and board layouts also need to be open source. If they aren't then doing anything...
View ArticleRe: Pibot vs ramps
That page is so miss leading... 1) the main board is just a ramps, minus the pololu sockets 2) they say complete solution, but it actually needs their additional stepper boards [www.pibot.com] 3) The...
View ArticleRe: ramps 1.4 registering very high temperatures
yeah, that's what I thought. I grabbed a new arduino mega clone and it is doing the exact same thing though, could it be the repetier client somehow or maybe the pins are all mixed up? This is my...
View ArticleRe: ramps 1.4 registering very high temperatures
I downloaded teacup and ran it with pronterface, it is also registering crazy temps except in Fahrenheit now (like steady 870) it is possible my pc fried the board? also would it be a terrible idea to...
View ArticleRe: ramps 1.4 registering very high temperatures
What dirves pins.h is the stuff in configuration.h. Depending on what motherboard you have set it'll do all sorts of odd things. With no Ramps on the Mega, there is no pull up on the ADC input that...
View ArticleRe: Pibot vs ramps
I agree in the fact that the board lacks complete opensource info. :-( On the other hand it is not fair to state that it is a ramps without the polulu drivers. Ramps has only 5 stepper drivers while...
View ArticleRe: Pibot vs ramps
I think the better (by far) solution is to simply use a higher voltage supply and run the standard Ramps board. The (maybe) 2X current improvement trades off directly against (proven) the 3X voltage...
View ArticleRe: RAMPS for Due!
Going from electrolytic to ceramic for the thermistor bypass caps eliminates the cap leakage as an error source on the temp measurement. Maybe not an improvement with a 10 bit AVR ADC, but most of the...
View ArticleRe: Please tell me I didn't burn out my Rambo Z-axis driver...
Stoof, contact info@ultimachine.com and they will rework it for you.
View ArticleRe: ramps 1.4 registering very high temperatures
Ah, that sounds like good news! I have a new ramps shield coming because I suspect I blew the first one somehow or it just shipped broken so I will let you know when it arrives : )
View ArticleRe: ramps 1.4 registering very high temperatures
There's not a whole lot to a Ramps board. Other than the FET's, it's basically a big bunch of jumper wires. If it's blown you should be able to see a scorched trace, a bum solder joint, or a bad...
View ArticleI'm soldering, couple of questions.
Hi there. Im soldering my RAMPS board. A couple of questions: 1. How do i check the capacitors are properly weld? So far, welded one and there is no continuity sound, but not sure if should be, it's a...
View ArticleRe: I'm soldering, couple of questions.
With capacitors, they don't show continuity. Your best bet is to check the continuity between the pad and the track you're soldering it to, and that the solder joint is shiny. Also, if they're the...
View ArticleRe: I'm soldering, couple of questions.
You can also use the "diode" function on the meter to illuminate those surface mount LED's.
View ArticleRe: I'm soldering, couple of questions.
Thank you guys. I think the moment of truth with the caps will be when testing the board fully assembled. The caps are SMT. Regarding the LED, i'll remove it and weld again, checking the dots. But...
View ArticleRe: I'm soldering, couple of questions.
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. :/
View ArticleRe: RAMPS for Due!
I just found that Ramps-fd boards are now available fully assembled from [www.geeetech.com] No idea if they are any good or not... for the price I have ordered one to play with.
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