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Here's what I made, here's a photo, and here's a link to the [[page]] on RepRaps wiki!
Re: Cherry Pi III Is Available - 9 years ago
This info is as good as any: RepRap wiki - look for the section called "adjusting and testing". Also, have a look at this : nophead on the RepRap forumby David J - Delta Machines
Re: Cherry Pi III Is Available - 9 years ago
The good news is that I have finished my Cherry Pi IIIs, with the exception of the heated bed that's still winging its way from China. With this in mind I thought I'd try to see whether things are moving in the right direction when commands are sent from RepetierHost. The not-so-good news is that the motors aren't moving as I expected, and I'm having some difficulty sorting it out. I suspect tby David J - Delta Machines
Re: Cherry Pi III Is Available - 9 years ago
QuoteAndyCart QuoteDavid J Oh - one more question - I'm a bit puzzled about the end-stop wiring on the RAMPS board: do the wires go from S to -, or S to + in this configuration? I've seen instructions on web pages that contradict each other. I connect to the outboard two pins so S and -VE. As long as you don't short out the 5V rail (inboard two pins) you should be fine Excellent - I guessed coby David J - Delta Machines
Re: Cherry Pi III Is Available - 9 years ago
Oh - one more question - I'm a bit puzzled about the end-stop wiring on the RAMPS board: do the wires go from S to -, or S to + in this configuration? I've seen instructions on web pages that contradict each other.by David J - Delta Machines
Re: Cherry Pi III Is Available - 9 years ago
How far does the Z carriage travel down the extrusion in use? Or, to look at it the other way round, how close does the bottom of the Z carriage get to the bottom of the extrusion where it sticks out of the bottom corner bracket? I'm trying to tidy up the wiring from the extruder and hot-end after it's passed through the Z upright, and I'd like to know how far up I can put clips! The slot in tby David J - Delta Machines
Re: Cherry Pi III Is Available - 9 years ago
Quotegowen Quotegowen With this added it compiled and installed fine although I did get these messages. Sketch uses 121,982 bytes (48%) of program storage space. Maximum is 253,952 bytes. Global variables use 6,386 bytes (77%) of dynamic memory, leaving 1,806 bytes for local variables. Maximum is 8,192 bytes. Low memory available, stability problems may occur. It appears this warning appearedby David J - Delta Machines
Re: Cherry Pi III Is Available - 9 years ago
Quotegowen QuoteDavid J I've decided to experiment with the power input - I'm planning to use a 203W Xbox PSU to power the printer, so I've decided to take the obvious route and try to fit an Xbox power socket to match. This will have numerous advantages: I won't need to modify the PSU lead. It's built to take all the power the PSU can offer. I will probably be able to fit a switch to turn theby David J - Delta Machines
Re: Cherry Pi III Is Available - 9 years ago
I've finally worked out where R4 is on mine - and it is 10k ohms. Reasonably easy to short out though (hopefully!) as it's on the edge of the board.by David J - Delta Machines
Re: Cherry Pi III Is Available - 9 years ago
QuoteAndyCart QuoteDavid J Andy, Am I right in thinking that you recommend doing the mod on the StepStick motor drivers - shorting out R4, I think? I'll be starting off by using your configuration.h file, so I'll need to match your setup as much as possible. I will be using the 3 links under each driver board. I have the right soldering kit to make this mod, but I only want to do it if it's aby David J - Delta Machines
Re: Cherry Pi III Is Available - 9 years ago
Andy, Am I right in thinking that you recommend doing the mod on the StepStick motor drivers - shorting out R4, I think? I'll be starting off by using your configuration.h file, so I'll need to match your setup as much as possible. I will be using the 3 links under each driver board. I have the right soldering kit to make this mod, but I only want to do it if it's a real benefit.by David J - Delta Machines
Re: Cherry Pi III Is Available - 9 years ago
A question about heat - relates to delta printers in general, not just the Cherry Pi. Most deltas tuck all the motors and electronics within the base, thus restricting the air flow quite a lot. Then people go and put a heated bed on top (some of which are quite powerful) which must radiate some heat downwards. As I intend to have some form of heated bed on my printer, should I be thinking abby David J - Delta Machines
Re: Cherry Pi III Is Available - 9 years ago
QuoteAndyCart If you use NO limit switches ... I thought the limit switches were NC?by David J - Delta Machines
Re: Okay to expose ABS to lubricants? - 9 years ago
You could print in nylon? Not tried it myself, and I believe it requires a high extrusion temperature, but the filament is available.by David J - General
Re: Where are we buying good ABS in the UK now? - 9 years ago
I've been getting e-sun filament from HobbyKing, via their UK warehouse (I live about 30 minutes drive from them!). They have all the basic colours, although what they call red is more 'chinese red', i.e. a reddish-orange. It prints well, no vices spotted so far, and comes in a vacuum-packed bag with dessicant and all in a strong box. All spools are 500g, which is good if you want to get a ranby David J - General
Re: Cherry Pi III Is Available - 9 years ago
Andy, Much appreciated. Davidby David J - Delta Machines
Re: Cherry Pi III Is Available - 9 years ago
Quotedougal1957 QuoteDavid J Now that's a thought... but how would you turn it on, if the Arduino hasn't got any power? ...one of life's conundrums! Ah but if you have a PC connected by USB then the Arduino does have power doesn't it? Doug Ah... sneaky!by David J - Delta Machines
Re: Cherry Pi III Is Available - 9 years ago
Andy, Back on page 2 you uploaded a configuration.h file - would that still be a good starting point for me, or have things changed?by David J - Delta Machines
Re: Cherry Pi III Is Available - 9 years ago
Now that's a thought... but how would you turn it on, if the Arduino hasn't got any power? ...one of life's conundrums!by David J - Delta Machines
Re: Cherry Pi III Is Available - 9 years ago
Fair point - but I *think* I've got it right!by David J - Delta Machines
Re: Cherry Pi III Is Available - 9 years ago
I've decided to experiment with the power input - I'm planning to use a 203W Xbox PSU to power the printer, so I've decided to take the obvious route and try to fit an Xbox power socket to match. This will have numerous advantages: I won't need to modify the PSU lead. It's built to take all the power the PSU can offer. I will probably be able to fit a switch to turn the PSU on and off remotelyby David J - Delta Machines
Re: Cherry Pi III Is Available - 9 years ago
Not to worry - I'll use the EC3 connector, as discussed earlier. It's not a great big issue, and should still look neat!by David J - Delta Machines
Re: Cherry Pi III Is Available - 9 years ago
Not quite a Lotus 7... Locostby David J - Delta Machines
Re: Cherry Pi III Is Available - 9 years ago
Progress so far (I've also made the LCD cover, but forgot to put it in the picture). Apologies for the messy desk! Oh... and before I start sawing the aluminium tube, can I confirm that the length should be 225mm? This was the original length for CP3, but I don't know if it got changed for CP3S.by David J - Delta Machines
Re: Cherry Pi III Is Available - 9 years ago
QuoteAndyCart @ David J I use these power sockets those springs look fine Does that work?! It only says that it's good for 3A.by David J - Delta Machines
Re: Cherry Pi III Is Available - 9 years ago
Andy, Do you have details of the power connector you used? The only ones I can find on ebay (and other suppliers) are usually rated up to 3A, which is nothing compared to the 15A or 16A you can draw with a heated bed! Otherwise, I'll do the same as I did on my Prusa i3 - I made a short flying lead and soldered an EC3 connector on it (if you haven't seen these, they're used in electric-poweredby David J - Delta Machines
Re: Cherry Pi III Is Available - 9 years ago
Excellent - today's task is soldering... Also, some blue painter's tape for the three uprights... that's how I labelled the extrusions on the lower frame, to make sure I put the t-nuts in the correct slots! Cheers, Davidby David J - Delta Machines
Re: Cherry Pi III Is Available - 9 years ago
Andy, Got the file - my mail handler had stuffed it in the spam folder...by David J - Delta Machines
Re: Cherry Pi III Is Available - 9 years ago
QuoteAndyCart QuoteDavid J Any chance of getting hold of the source file so that I can change the spacing? Assuming that it wasn't created in anything too obscure! If I can change it then I'll post the new file here, for other builders. Hi David PM me with your email address and I'll send you the Sketchup file. Andy I've sent you a PM - I've also sent one to Pointy (a.k.a. Les) as on page 1by David J - Delta Machines
Re: Cherry Pi III Is Available - 9 years ago
There was a smiley there...by David J - Delta Machines
Re: Cherry Pi III Is Available - 9 years ago
BTW: the E3D picture on page 16 looks just like a v6!by David J - Delta Machines