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Prusa i2, Prusa i1, Prism, Sells, and other Mendel variants
Re: Marlin: Mostly awesome ... - 11 years ago
Marlin RC2 has Z-axis motors enabled during idle, by default. I believe Sprinter disables the idling Z motors by default. There's a line in Configuration.h to change this. Also try reducing Z motor speed and acceleration by about 30-40%.by jseaber - General
Temperature vs. Print Quality (ABS) - 11 years ago
Someone suggested I share these before & after prints. Both were done on the same Prusa with new Printrboard electronics and identical Marlin firmware. I'd tried a new thermistor table, which should've matched the 100K Epcos thermistor on my hotend (beta 4066), but prints came out looking melty. I dropped hotend temp in 5C increments to fix the melty appearance, finally stopping at 210C inby jseaber - General
Re: What motors are better? - 11 years ago
nophead Wrote: ------------------------------------------------------- > Twice the number of steps per revolution can only > be advantageous. > Except it will half your maximum speed, all other > things being equal. True. Hadn't thought of that, as my machine prints at up to 130mm/sec (infill) without trouble. I did have to decrease maximum Y-axis acceleration to 2000 mm/sec^2; occaby jseaber - General
Re: What motors are better? - 11 years ago
I upgraded from 1.8deg to 0.9deg steppers last year while still using Gen6 electronics (only 1/8 microstepping). Resolution improved in the X and Y. You probably won't see an improvement with 1/16 microsteppers (Pololu, Printrboard, etc.). But, why not go for 0.9degree motors? Twice the number of steps per revolution can only be advantageous.by jseaber - General
Re: Marlin heated bed support on gen6 deluxe - 11 years ago
Hm, that's a totally new layout (not mine). Almost every IC and jack has been re-positioned. It's a shame Mendel-Parts doesn't follow the open-source license and keep their documentation and code up-to-date. Oh well, the Printrboard will be out next month; much better platform. If you can follow the traces from the heatbed and thermistor leads to the Atmega m644p, you can count which pin numberby jseaber - Firmware - mainstream and related support
Re: Marlin heated bed support on gen6 deluxe - 11 years ago
Can you post pictures of the board? I designed a draft version of Gen6 with heatbed support and sent it to Camiel at Mendel-Parts. Never heard back from him... If it's the design I did, I'll update the Gen6 wiki with wiring and firmware support for the "Deluxe" edition.by jseaber - Firmware - mainstream and related support
Re: [USA] Gen6 Electronics, Heatbeds, Hotends -- Cheap! - 12 years ago
New batch of Gen6 boards are in.by jseaber - For Sale
Re: St. Louis, MO. USA - 12 years ago
A bit late to find this thread, but I'm just outside of St. Louis. There are quite a few of us in the area. Here's my working Prusa:by jseaber - Missouri, Saint Louis RepRap User Group
Re: Wanted: J-Head Hot End in USA - 12 years ago
Brian's now distributing his hot-ends through RepRap-USA:by jseaber - Wanted
Re: [USA] Gen6 Electronics and Heatbeds, Cheap! - 12 years ago
Almost sold out of Gen6 boards...by jseaber - For Sale
Re: Gen 6 firmware - 12 years ago
After Arduino says "Done", press the reset button for about 1 second, then let go and wait about 10 seconds. Unplug the power cord. Reconnect. I've flashed about 100 Gen6's; this seems to be the best way to ensure the board has reset after a flash.by jseaber - Controllers
Re: RepRap GEN 6 Electronics for Sale (If enough interest) - 12 years ago
@Bas: Bare Gen6 PCBs are available at RepRap-USA for $12.99. Assembled boards are $159. Bas Wrote: ------------------------------------------------------- > Does anybody know where I can buy just an bare > pcb? They are on ebay for €25 (= $36) but I hope > for a cheaper option. I already have the stepper > drivers for this board and the ft232 and allmost > all of the smd parts soby jseaber - Controllers
Re: Gen6 Heatbed Daughter Board - 12 years ago
I'm using Gen6 with a dumb heatbed (Prusa MK1 PCB hardwired to a 15A supply). I may look into creating an attachment through the RS485 jack. This would require minor firmware changes, though. EDIT: A daughter board is not possible without a completely separate microcontroller. But, heatbed support could be added with some soldering effort. Attached is a simple schematic showing the required modby jseaber - Controllers
[USA] Gen6 Electronics, Heatbeds, Hotends -- Cheap! - 12 years ago
Heatbed MK1 PCB by Prusa - $35 J-Head Hotend w/0.35mm Nozzle - $65 Sanguinololu v1.3a PCB - $11.99 Gen6 Electronics with 3 optos - $169 Sprinter firmware is pre-loaded. These are great boards, and won't last long at this price! Normal price is $199.by jseaber - For Sale
Re: Blobbing due to small pauses. [help me] - 12 years ago
Woodsmooke, did Teacup do the trick? I see a small blob at every retraction. When the extruder resumes after a retraction, it spits out a small blob of filament. I've experimented with jitter, clip, different temperatures, retraction speeds, retraction distance and "Restart extra" distance, without success. jim_blag: Could you post your blob-free Skeinforge profile?by jseaber - General Mendel Topics
Re: Stepper motor squeal with Gen6 - 12 years ago
There are two solutions: 1) Switch to Sprinter firmware. Motors are off by default, until printing. Not a true solution, but much less annoying! 2) Change R36-R43 as discussed above. The reason this isn't the default recommendation is due to the side effect of increasing the chopper frequency: increased power dissipation. You'll need to add heatsinks to the driver ICs. But, this will eliminateby jseaber - Reprappers
Re: RepRap GEN 6 Electronics for Sale (If enough interest) - 12 years ago
We finally have a batch of Gen6 boards! Price: $159 USD, with optos, firmware loaded:by jseaber - For Sale
Re: RepRap GEN 6 Electronics for Sale (If enough interest) - 12 years ago
Sure, I'll post an update & photos here as soon as they're ready.by jseaber - For Sale
Re: RepRap GEN 6 Electronics for Sale (If enough interest) - 12 years ago
We're sending off parts & boards to an SMT assembly company this week. Assembled Gen6 boards will be back in our shop around August 20-30. The total for an assembled board + optos will be no more than $195 shipped within the US. Yes, bootloader and firmware will be loaded I'm also working on minor firmware fixes...by jseaber - For Sale
[USA] Bare Gen6 PCB's - 12 years ago
I have a large batch of Geb6 PCBs for sale here. Or, contact me for direct purchase through PayPal. Price: $12.99 + shipping Shipping is $2 USD within the US, or $4 worldwide. Edit: My team will have our first board assembled by July 27. Assuming all goes well, I'll have a batch of 100 assembled and flashed Gen6 boards ready by mid August.by jseaber - For Sale
Re: RepRap GEN 6 Electronics for Sale (If enough interest) - 12 years ago
I gave up waiting for a response from bsthomps... so I'm having my company fabricate 250 Gen6 PCBs. 100 will be fully assembled and tested in about 4 weeks from today. We'll post links as soon as they're ready! EDIT: Boards have arrived. Holding off on assembly unless there's more interest...by jseaber - For Sale
Re: RepRap GEN 6 Electronics for Sale (If enough interest) - 12 years ago
Interested, USA. How soon will these be fabricated?by jseaber - For Sale