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Re: Acquisto stampante 3d hobbysta - 9 years ago

Quoteredscry88 Grazie a tutti per le risposte, infine ho fatto di testa mia (probabilmente sbagliando) è ho acquistato una stampante geeetech cinese ciao posso chiederti dove hai comprato la Geeetech (e quale modello)? Ebay? Banggood? Altri? Dall'Europa o dalla Cina? Passata la dogana senza problemi (nel caso di Cina)? grazie!

by darkoddio - Discussioni generali - NO PROBLEMI DELLA STAMPANTE

Re: stepper motors movement not continuous - 10 years ago

hi dc42 thanks for the suggestion, I found the same and before I never thought that Marlin+GLCD could be the cause of the strange behavior I will give Repetier a try and let you know I've also read a lot of posts in which you suggest to use the Duet pcb (~100€) instead of Arduino+RAMPS (~30€): I understand Duet is more powerful and suitable for delta printers, but it is also more expensive and ob

by darkoddio - Delta Machines

Re: stepper motors movement not continuous - 10 years ago

Quotedc42 Are you using Arduino + RAMPS + graphical LCD + Marlin? If so, that's probably the problem. An 8-bit Arduino doesn't have enough processor power for that combination. Correct, I'm using exactly that combination, but I don't think I'm the only one using it to control a delta (Andy as well is using Marlin RC with his Cherry Pi). Moreover I don't understand why there is no issue increasing

by darkoddio - Delta Machines

Re: stepper motors movement not continuous - 10 years ago

Here is another video where the issue is more visible/audible The speed used to move the effector was F10000 using G0 codes If I increase the speed to F14000 it seems the issue goes away any idea?

by darkoddio - Delta Machines

stepper motors movement not continuous - 10 years ago

Hi all I'm trying to build my Delta printer, based on Cherry Pi IIIs by Andy I'm struggling with the calibration, and I don't really understand what's wrong with the printer. I can reach a good calibration of points in front of towers and center, but when I check "intermediate" points, they are completely out of calibration. The last cause I'm thinking is a "not continuous" movement of all step

by darkoddio - Delta Machines

Re: 265mm 12V/24V round heatbed feedbacks needed - 10 years ago

QuoteWZ9V Power = Voltage * Current Power = Current(squared) * Resistance Current = Voltage / Resistance As DC42 said power is not a constant, it depends on the Voltage and Resistance values. Since they control the Current and Current is the main driving factor in power as you can see I the two equations above the power changes as you change the voltage. Yes, thanks I found them yesterday just

by darkoddio - Delta Machines

Re: 265mm 12V/24V round heatbed feedbacks needed - 10 years ago

Quotedc42 Quotedarkoddio But if I remember correctly the new MOSFET is irl2203n If you mean Gate-to-Source, the value it is 16V. I mean Vdss, which is 30V for that mosfet, so OK. I was wrong, sorry it is irlb8743 but Vdss should be 30V as well Quotedc42 Quotedarkoddio What if I use a 14V power supply to feed the 11A input to the RAMPS? do you think I need to replace the F2 fuse? Yes, because th

by darkoddio - Delta Machines

Re: 265mm 12V/24V round heatbed feedbacks needed - 10 years ago

Quotedc42 The OP does have another alternative. Keep the main 12V power supply, use a separate 24V LED PSU (probably turned up to 28V) to feed the 11A input to the RAMPS, use the 24V connections on the bed heater, and drive it directly from the RAMPS. This assumes that the heated bed FET he replaced on the RAMPS is rated 30V or more. Also the 11A fuse on the RAMPS would have to be replaced by an

by darkoddio - Delta Machines

Re: 265mm 12V/24V round heatbed feedbacks needed - 10 years ago

Yes, you suggested to turn up the voltage I missed the reference in your first post to the power supply having the voltage pot, sorry What 32bit board were you referring to? So I see 3 options to improve my heatbed performance (in order of preference): 1) replace power supply with LED having voltage pot and increasing it to 14V, keeping existing electronics 2) SSR + dedicated power supply 3) re

by darkoddio - Delta Machines

Re: 265mm 12V/24V round heatbed feedbacks needed - 10 years ago

Well, I'm currently using an HP DPS-600PB (575W 12.15V 47A) server power supply that should be more than enough to power whatever is connected to it I'm a bit confused: why are you suggesting to use a 12V power supply and at the same time to switch to 32bit electronics (please provide an example) because it has no 12V limit? What's the advantage then? If I'm right, many delta kits are provided w

by darkoddio - Delta Machines

Re: 265mm 12V/24V round heatbed feedbacks needed - 10 years ago

Hi dc42 I somehow missed the Power Expander It seems that it is actually exactly what I'm searching for Do you have any suggestion about the additional power supply? Do you think the one I link here is enough? regards

by darkoddio - Delta Machines

Re: 265mm 12V/24V round heatbed feedbacks needed - 10 years ago

please help, how to identify the voltage drop? what about this SSR-60DD ? I'm a bit unwilling to buy from US, I would like to find an alternative in Europe

by darkoddio - Delta Machines

Re: 265mm 12V/24V round heatbed feedbacks needed - 10 years ago

yes, SSR was already an option: I'm about to buy this one even if I need to buy another power supply: any suggestion? how many amps should have it? I guess at least 10A, right? EDIT since the heatbed is 120W, if I want 15V it should have 8A, if I'm right What about something like this?

by darkoddio - Delta Machines

265mm 12V/24V round heatbed feedbacks needed - 10 years ago

Hi all I'm building my new Delta printer based on Cherry Pi IIIs from AndyCart. I bought the above heatbed from Aliexpress I mounted it with the black surface up, with glass on top. Afterwards I red that I can also print directly on the alluminium side (this means black side down). Maybe I will give it a try. The heatbed is currently connected to D8 on RAMPS 1.4 I had to change the MOSFET on the

by darkoddio - Delta Machines