NZ building trade uses metric wherever possible, where imperial is required, like the washers I mentioned, they can be sourced locally. davmj Wrote: ------------------------------------------------------- > True, although 100 for $9.25 and no postage costs > at the moment from RS isn't that bad a price. Mind > you the implement workshop down the road from me > might have some, they hby Grogyan - General Mendel Topics
They do, but in bulk, which is no good when you will only need 15. The datasheet says to get M5 if M4 mudguards are not available, yet they are in a standard size of 5/32 x 3/4 x 20G NZ used metric, however imperial sizes are easily obtainable. Which is the same as saying 3.97 ID x 19.05 OD x 0.9 thick.by Grogyan - General Mendel Topics
I've not heard that term before NopHead, but then again, before Mendel was released, I never heard of mudguard washers either. In any case i'm costing up for fasteners, locally buying, as I got those bits you sent me on the 9th. M5 mudguards and M4 mudguards are difficult to find, though as I mentioned before the similar sized 5/32 x 3/4 x 20G looks to be the best variant.by Grogyan - General Mendel Topics
With regards to the mudguard washes, I find even the M5 variant hard to come by, however a 5/32 x 3/4 x 20G is roughly the same size, and is a standard size that I can get from a fasteners specialist. Has anyone used these over mudguards? 4.1 x 19 x 0.9mmby Grogyan - General Mendel Topics
Compile with Arduino 21 or earlierby Grogyan - Firmware - mainstream and related support
Looks like JohnnyR made some good improvements over on the wiki, first thought no thermocouple as standard. I'll have to see about getting my blog added to the blog of blogs and blog about this on my blog, then I can be a real blog-head, lolby Grogyan - RAMPS Electronics
The stepper kinda has microstepping, in the form of half steps, which the gen3 electronics have enabled by default. Assuming the McMaster 10 tooth pulley with a diameter of 0.637" That is approx 0.127 steps/mm What are you getting for yours Jeff?by Grogyan - General Mendel Topics
Good point. It's funny how everytime I see it says SPI I think of I2C. I'll edit my posts to reflect this blunder, one of many.by Grogyan - RAMPS Electronics
I'm leaving it for the day, as i've just about completely rerouted the board, with a number of differences from the last one I posted. Things I have succeded in doing. Standard 0.1" loching headers for the motors Jumper pads instead of headers Doubled the use of the 100K pull ups, which were pulling down, datasheet suggests using pullups on logic high pads. Rearranged the FETs for possibilityby Grogyan - RAMPS Electronics
I plan to use the RepRap standard firmware on mine, I don't know about other firmwares that are around. All going well, all you should need to change is the configuration.h and pins.h files to handle the different layout. I have issues with the RepRap host on my machione, however I don't have any issues with RedSnapper, which works on the RepRap standard firmware.by Grogyan - RAMPS Electronics
I fixed that problem, plus doing some changes today, including making space for locking header connectors, but becuase of space requirements they will be the standard 0.1" type. I'm keen on seeing what JonnyR releases, he already changed the wiki, and removed my comments, fair enough. I'll be plodding along with this all day.by Grogyan - RAMPS Electronics
If you are using a thermocouple on a v2.2 extruder board, ensure you have the correct orientation for the thermocouple, as well as the approriate mod on the board itself. If you are using a thermistor, use a multimeter to measure its resistance (circuit power off), heat the thermistor up a bit and measure its resistance, if it does not change then you have a dead thermistor, hence why i'm an advby Grogyan - Controllers
I've been playing with the RAMPS design adding in the MAX6675, ause for my main RepRap it will use this electronics setup. As for configuration, try reading up on the RepRap firmware, it has in it code to support the MAX6675 which should be relatively easy to port over.by Grogyan - General
He he, whoops, made a mistake on my board. Reading the datasheet helps when knowing which logic to use for sleep and reset.by Grogyan - RAMPS Electronics
Hello JohnnyR, glad to hear there is a 1.2 in the works. I would still put a resistor on the LED anyway, though the uC should sink not source the LED, so having the extra resitor means that there is very little chance of doing damage to the uC. I have been hacking away at improving a number of items on RAMPS, though I haven't got to putting on connectors, that I think is next on my list. Yeah,by Grogyan - RAMPS Electronics
Seems like it is an indicator for DRC error checking, so I have altered track spacing to be a minimum of 0.4mm, doesn't seem like much but a RepRap should be capable of this precision. Still working on it, lots of errors to fix, makes me wonder if JohnnyR did any sort of checking.by Grogyan - RAMPS Electronics
I've been bored waiting for the holidays to finish so I can go and use the drill press at work after hours, to hopefully get the Y axis gantry, anyone following my story will know. I ordered parts for a Mendel as a backup plan, and that plan also involves new electronics, which I started to work on int he last couple of days. Essentially I have already added the MAX6675 thermocouple sensor, addby Grogyan - RAMPS Electronics
I probably shouldn't mention this, but i've put my order in for RepRap Mendel parts from eMaker, as NopHead seems to be selling through there as well as eBay, but its darn a lot cheaper at GBP$125 or about ~NZ$290 excluding shipping. This is my backup plan which may soon be taking into affect as my RepStrap is taking too long, started it a couple of months before Mendel design was released. Wilby Grogyan - New Zealand RepRap User Group
You may have to change the wiring of the stepper motor to enable it to go down and touch the bed. A common microswitch can be used to set the specific height, at least that is what i'm going to use. Use the MIN endstop as the input to the stepper driver.by Grogyan - General Mendel Topics
I have a large problem, my original idea to use 608 bearings on 5/16 rod came unstuck when I found that in most cases it won't be constrained enough plus it sags substantially in the middle, because it is a Y gantry holding the Z axis, thus it has a lot of mass, which I have done my best to minimize. Such that two people have suggested using proper linear bearings, I believe this is the way toby Grogyan - General New Machines Topics
1) Yes 2) Yes Tolerance fits will be tricky, but doable.by Grogyan - General
Gulp, that is going to cost quite a bit, personally i'd maybe get the extruder bits, if you didn't want to find a local CNC to make them for you. Honestly i'm working as fast as I can to get mine done, just so many people want parts. So when you've got yours built and calibrated, there is a queue waitingby Grogyan - New Zealand RepRap User Group
I fixed the problem, permanetly. I set in firmware to not use acceleration, ditto in the host. Plus I turned down the speed in firmware. Reason for all this is that I can't guarantee that with 3 different stepper motors, the acceleration won't be a problem, so better safe than sorry, i've disabled it. Thanks all.by Grogyan - RepRap Host
This is getting silly, and i'm trying to get my 3D printer built and calibrated as quickly as I can. How many of us here in NZ have a RepRap, not a WIP, to help distribute RepRaps? I am close to finishing, but not within a couple of months, and I want to help out. See my blog on where I am at.by Grogyan - New Zealand RepRap User Group
I have an idea, other than asking Vik or Grael, try visiting the MakerSpace or the kiwi robotics group there. I'll post in the main thread the status of where I am at on my 3d printer.by Grogyan - New Zealand RepRap User Group
Try turning up the pot on the extruder, this increses the ammount of torque you will need in order to push the filament through. Myself I had a catastrophic problem, I used a DC motor that was filtered, but still too much EMI, such that it burned out one of the motor drivers. I now use a seperate stepper driver amd switched to a stepper. To me it sounds like you still need to adjust the pot wiby Grogyan - Firmware - mainstream and related support
There is a few people around that have repraps, and I would be happy to send you parts, though my 3d printer is far from built, sorry. Grael I think lives in Welly, maybe you could contact him, or Vik when he returnes from his holiday in the UK.by Grogyan - New Zealand RepRap User Group
You can try searching for the Wellington MakerSpace, unfortunately I belong to the Auckland MakerSpace: Tangleballby Grogyan - New Zealand RepRap User Group
I will be building Ed's Mendel when I get my RepStrap built.by Grogyan - New Zealand RepRap User Group
Can you post a photo of it, be good to see how you went about it? Mine is still a work in progress, and is no longer an experiment to see how easy for a complete noob to build one with locally available parts like old scanners. I'll be working on the Y axis over Christmas. Like you, if anything happened to my RepStrap, i'll just biff it, and just aqquire mendel parts. Vik should be back fromby Grogyan - New Zealand RepRap User Group