QuoteTravis Hainsworth Did these boards ever make it to production? Thanks in advance! Not to the best of my knowledge. You may want to consider a duet x4 expansion, gets you up to 9 motor drivers, I think. How many do you need?by Simba - Developers
Yes it is mutually beneficial. Reprap community benefits and company gets good PR and related sales. Classic loss-leader approach, main difference being an intent to only break even so we can sustain it, and maybe even get ourselves a slightly better margin over time. I can tell you why companies charge 25X on a product...you'd better believe it's because people don't know better, and trust aby Simba - Reprappers
I have the pricing on all the raw controllers however Duet3D is a major reprap contributor and it's not right to undercut them! No margin for Duet would mean no development of the reprapfirmware base, it could potentially end their project. The same could be said about any board that contributes to the smoothie project. Both have an extra mark up to support the developers. Look at how MKS hasby Simba - Reprappers
I work for a significant North American 3D printing company, I have access to all the real pricing info (mostly from China), and thought of an idea to extend the bulk pricing for one product to the reprap community, essentially piggy backing an order to get the cost down. There are certain products that are obnoxiously marked up. For example we get bearings for $0.10-$.22 a piece that I see rouby Simba - Reprappers
I can easily see the need here...Mgn9H raw price is around $14 for 500mm with most of the cost being in the rail ($8.50) They're not marked up much where they are available but the bigger issue is their availability is extremely low. Also note Mgn9 rails are hardened so well you can not cut them with ordinary tools like a bandsaw. You need a tile cutter or abrasive cutting wheel with high horby Simba - Reprappers
Sure, which ones are you looking at?by Simba - Reprappers
Here's a hypothetical question... If you had access to corporate scale organization to get high quality printer parts at cost (i.e. 2, 3, 4, even 5X margins or better removed), which parts would you want the most and why? I'm talking steppers, drivers, filament, bearings, belts, nuts, bolts, etc.by Simba - Reprappers
Guys, thanks so much for working on this open source projects. Its been a long stretch, and now thanks to BoBc it seems the final problems are solved with the board, and our friend Michal put a version Marlin modified and verified on Decapede here who also discusses his work here Reprap. A lot of the original goals were to try to keep the board costs low (boards components like these will easiby Simba - Developers
Hi Bob, Nice work on the expansion boards. how are they going so far? How we will make these cheap at low volume is another question : ) IF you want to convert to kicad and help revise the board that would be great. It is nearly final, just 2 or 3 bugs to work out.by Simba - Developers
Great news everyone, We have a very, very high quality small batch of PLA-base specialty filament designed by M3D in the USA. It is the only color-changing "Chameleon" filament available in PLA, or in exciting and dramatic colors. Each color changes from the specified color to white at the stated temperature. The story goes that we set out to the Maker Faire NYC, and we thought presentinby Simba - For Sale
Quotewrdjr20 HI Simba, I am building a 3d printer that will use all 10 stepper drivers. I think it is great that you had the vision to see that 4 or 5 steppers are not enough for many current and future applications. This board addresses that limitation and I can't wait to get my hands on one of them. However, I do have a concern after looking at the schematics published on Nov 5th. On paby Simba - Developers
Hello Everyone, We are happy to report Decapede testing is finished. However bear in mind it is still an experimental board and their may be minor changes in future versions as needed to optimize performance. In our tests we tested the basic function of the input pins (useful for thermistors, volume control, analog, and more), outputs (useful for heaters, fans, and more), mega output. Then weby Simba - Developers
Hello Everyone, Thanks for everyone who has given their feedback, and lurkers, people on the mailing list, etc. We really appreciate your enthusiasm for this new board. After some discussion and testing we've decided that we don't to wait for extensive sample applications before releasing the board. Instead we've tested the board, burnt them in and showed that they work really well. We willby Simba - Developers
If most of the code is local, or on SD it can work too. A while ago someone suggested leaving the serial communication lines (pins 1-2?) for arduino open on decapede and we did just that...in case one of these protocol like SPI allows you to chain arduinos...I'm not sure how to even begin suggesting this... But the TX RX pins are on a jumper routed to the surface of Decapede that should allow cby Simba - Developers
QuoteSluggo QuoteSimba RE: Encoders, can you tell us more about the encoder electronics? For 100's of motors, you should probably dedicate several arduino units just for the encoders separately. Thanks for your time. I was thinking something along these lines for encoder to mount on the back of a dual shaft stepper. But if someone can recommend an encoder that slips on a single shaft stepperby Simba - Developers
Current specifications: > Dimensions: 142mm x 110mm > PCB thickness: 1.6mm > Base Copper laminate = 2 Oz and Finished Copper thickness = 4 Oz (Total) > Base Material: NEMA Grade FR4 Glass Epoxy > Surface finished: HASL (NO LEAD) > Minimum Clearance(pad-pad, pad-trace, trace-trace): 0.2mm > Minimum Drill size: 0.5mm > Minimum trace thickness: 0.3mm > PCB is UL approvedby Simba - Developers
Hi everyone, We are trying to finalize this board for a mass purchase...still not sure if it will be preorders or just order or Indegogo. In the meantime we are verifying the board and thought of a few areas where people may want improvement. The first is that it can handle 60A peak but 24A continuous. This was designed for 24V switching supplies. a 600W atx can only deliver 12V 24A. So weby Simba - Developers
Dale Dunn Wrote: ------------------------------------------------------- > Very interesting, and looking great. Just what is > needed for researching more hardware > permutations. > > Sorry if this has been asked already (I looked but > didn't see it), why develop for Sprinter and not > Marlin? No reason beyond familiarity and lack of time actually. Hopefully people can heby Simba - Developers
bobc Wrote: ------------------------------------------------------- > Not a word I usually use, but this deserved it : > awesome! > > What exactly does "prepared for Arduino Due" mean? Thanks for your kind encouragement !! By prepared for Arduino DUE I mean, we did not think about it or evaluate it much, but we planned for most of the pins working on only 3.3V by supplying our ownby Simba - Developers
Hello Everyone, The final Decapede board samples have arrived. As soon as we verify all aspects of the board we will put it out for preorders in the hopes there is enough interest for a batch purchase! It has a giant 1 inch, 60 Amp, blade fuse, automobile style, symbolic of its power. It has 4 ounces of copper for quality current driving and heat sinking. It has a built in micro SD, and canby Simba - Developers
nophead Wrote: ------------------------------------------------------- > You need a land to be able to get a flat surface > when the filament width is wider than the nozzle > aperture. It only catches if the flow rate is too > high or the object curls upwards. To fix the later > it needs a fan to cool the object. Wait. .. fan cooling reduces warp?by Simba - General
Robin2 Wrote: ------------------------------------------------------- > @Simba, I don't understand how it can stall in > both directions. Perhaps you mean that in one > direction you can make the motor overspeed (and > miss steps) and that takes more force than if you > try to slow the motor? By overspeed I mean the > sort of thing that would happen if you were using > the moby Simba - General
"a standard nema 17" also testing the ones on affinia, does the same thing. It should point of that detect torque rating is reasonable against the direction of motion, with the direction of motion it feels 5-10 times above the rating....by Simba - General
I'm finding that a stepper motor drive on a standard nema 17 motor gives a fixed amount of holding torque (say, 5L when still. If you put the motor in motion, say, 5 steps a second, or even 500 steps a second, all the sudden it takes 5LB of force to stall it if you push WITH the motor, but only about 0.5LB to stall it if you push against the motor. In other words the motor is stalled much easierby Simba - General
And therefore the metal solution is to not change the coefficient of friction, but make this zone as short as possible? Did the other printers (before darwin) use Teflon? nophead Wrote: ------------------------------------------------------- > When you retract the rubbery filament stretches > lengthways and so pulls away from the walls and > does not jam. This is why you can always pulby Simba - General
Could you repost that image? Are you saying teflon is better for retraction? That would agree with what I've found here, that metal has friction, its just lessened by fans, tapers, and polish... so if you try to retract the force on the walls should cause the retracted filament to just stretch rather than actually pull up.... interestingby Simba - General
Interesting. I found that too, you are right that a taper helps, and that you need a fan to see there is difference between tape and not. mechanically, I'm not sure why a ~5mm transition region is okay, but a 10mm transition = a total failure. You would think if the diameter of the stainless piece is 2 mm, that the forces would be absorbed easily within a 1:1 aspect ratio, maybe even over onlyby Simba - General
nophead Wrote: ------------------------------------------------------- > Quote In addition, a taper DOES not in fact help > as I originally thought. > > Yes it does if it covers all of the transition > zone. It works like a mould relief taper. It > prevents the rubbery part of the filament gripping > the wall as any forwards movement causes it to > part from the wall. Belby Simba - General
clever... "where can I find a non stick coating, and heat" : )by Simba - General
leadinglights Wrote: ------------------------------------------------------- > Nice idea Josh_mp5, but I have solved it. The > problem was a plug of plastic which had built up > in the hot end - every time the hot end was > stripped the PTFE liner was changed - and each > time the gap got bigger, finishing at about 2mm. > > > > All is back to normal - except I have dby Simba - General