With gen3+ hack you can just use standard marlin firmware. Same as 95% are usingby Dust - General
have you seen the gen3+ ? gen3+ is is a daughter card for the generation 3 mainboard which plugs into the sanguino header, and replaces the extruder controller. The stepper hack is replaced with a Pololu header, and mosfets are provided for hot end and print platform.by Dust - General
"Best mosfets for driving your heated bed: IRLB3813, IRLB8743, FDP8870, AOT240L, CSD18502KCS. These mosfets will run merely warm with NO heatsink and a load current of 10A. They should be good to over 15A with no heatsink according to the worst-case numbers in their datasheets and is also see also " From the irc botby Dust - General
Sorry I can't do Rangiora, just to far away for those without transport. Also wood dust is just horrid for the nose and reprap (will stick to any lubricated surfaces and clog the works) (I swear i'm still finding sawdust from high school wood works days! and that was a long time ago!)by Dust - New Zealand RepRap User Group
The above looks fine... You probably have the end stop cables swapped around, X on Y etc... Move all axis away from any endstops, In pronterface use the m119 command to show the end stop status Depress the X end stop switch and send another m119, did the X end stop change? Test all end stops and check X is on X etc If your end stops don't change, check you have set the cpu fuses correctlyby Dust - Sanguino(lolu)
Sure, if you replace the Resonator. Then you need to set the CPU fuses for the correct frequency And you need a 20mhz 644p profile for arduino.. Then recompile your sources (which may or may not work for the baud rates on the new freq... depends how it was written) All for 4 more mhz which will be used waiting for data over the slow serial lines...by Dust - Sanguino(lolu)
Define optimal? 16 and 20 teeth pulleys are common the difference? 16 tooth gives you 10micron theoretical resolution and 20 tooth gives you 12.5micron (presuming 1.8 steppers and 1/16 micro stepping) If you can spot 2.5 micron difference.. good for you. Most of us can't. But as you can see the more teeth the lower the resolution... when does it become an issue? well that depends on wby Dust - Reprappers
I have no issues with their products or service. And many many others say the same thing. Do your self a favour stop whining and get onto the #reprap IRC channel and you can talk to a representative directly. User BubbleRep (when he is awake) RRD have a policy of doing their darnedest to fix any issues. (including a lot that are clearly user issues) No after sales support is just BS. Instrby Dust - General
Why not just make a gen 7 board? DIY board, 644p or 1284p... What "Melzi" features are you wanting?by Dust - Controllers
New you will have a hard job finding one... But a lot of us have them hiding in a box long discarded... What area of the world are you in? For diagnostics see full board details You can use pololus, eg something like I would replace all of them with pololus, 1/16 is so much smoother and quieter than 1/2 steppingby Dust - Controllers
This is sad... barely out of the stocks and people are already destroying them...by Dust - General
Have you seen [78.47.92.212] I3 box frame assembly, step by step.by Dust - New Zealand RepRap User Group
Stick a ohm meter on those red wires, see what is connected to what and what resistance.. this will give you (and us) valuable cluesby Dust - Controllers
annother new board But its the same ARM processor as the Arduino Due, so its firmware should be able to be ported esily to ramps-fdby Dust - Controllers
Repetier for due firmware https://github.com/biocode3D/Repetier-Firmware-Due I know it compiles.. but thats as far as ive gotten with it.by Dust - Controllers
I got my ramps-fd from geeeteck... its going to need some work.. Quick reviewby Dust - Controllers
I do wonder why a lot more boards aren’t using the Atmel AT90USB1286, the Native USB interface is very appealingby Dust - Controllers
Unfortunately the main person who had contacts at Canterbury Uni (Andre from the rocket club) is now spending most of his time in the USA... So we don't have access to Uni rooms via that route anymore.. If anyone has access to a room somewhere.. speak up and we can try and arrange somethingby Dust - New Zealand RepRap User Group
Looks good. Sounds good. What about the stepper cables. A stepper is basically two coils, check that the two wires that make up a coil are together (use a multimeter to find out what two plug pins are connected) ie 2B2A should be one coil and 1A1B should be the second as indicated fromby Dust - RAMPS Electronics
Just taking a quick look at All the enable pins for the steppers on X, Y, Z and E are commented out by default. You need to enable them, Pololu modules in a ramps uses the enable line.by Dust - General
Re E going the wrong way just change the e direction in your config egby Dust - Next Wave Electronics Working Group
Thats nasty.. Would you mind doing a little experiment (this is off the cuff, so there may be a better way) You should be able to weigh a known small volume of solid filament. Then work out the volume of your remaining filament and weigh that You should be able to calculate how much weight is missing and from that the volume of plastic that is missing. Just to see... how bad it really is.by Dust - General
I just found that Ramps-fd boards are now available fully assembled from No idea if they are any good or not... for the price I have ordered one to play with.by Dust - Controllers
Taurino comes with demo software that continuously send out gcode over the serial lines.by Dust - General
Some boards do support programmed micro steps eg rambo. If this will work dynamically on the fly.. that is unknown.by Dust - RAMPS Electronics
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 3) The stepper board looks to use standard step, direction and enable signals, so can be plugged into any ramps style board where you can get at those pins. There is documentation on the wiki for this stepper board andby Dust - Controllers
The FET's are quite sensitive to static damage. Could also have been taken out when the Pololu went. I would guess the FET for the HBP has died in the on position. Since the normal ones are fairly marginal I would replace it with something better than what was on there orriginaly. From the reprap irc bot. "Best mosfets for driving your heated bed: IRLB3813, IRLB8743, FDP8870, AOT240L, CSD18by Dust - Sanguino(lolu)
Swapping the stepper wires around while the board is on will kill the pololu drivers 99.5% of the time.by Dust - Sanguino(lolu)