Yes, the generation one electronics definitely does. I'm not exactly sure how the arduino electronics connects but I'm assuming that's a straight cable too.by greenarrow - RepRap Host
I don't know if you are stil having problems, but I'm running compiz-fusion and the host software at the same time without any trouble (on Fedora). If you need to switch it off the package fusion-icon is an icon that sits in your notification area, you can right click on it and switch window managers.by greenarrow - RepRap Host
I've been working on a python module to control reprap. I've tested it with the generation one electronics but it should work with the arduino too, as the comms protocol is the same. The module provides full control over the cartesian robot, the extruder control is incomplete, but this is less of a priority anyway as I do not aim to replicate all the FDM capabilities of the java software in pythoby greenarrow - RepRap Host
The hyperterminal echo test is also good for testing your cables (with just the comms board). If you try it with both of your 2 pin cables (one after the other). If the stepper tester does not come up with the timout message then you can be pretty sure everything is working fine.by greenarrow - Controllers
In those pictures your tx and rx are back to front. The tx on the comms board should go to the rx on the stepper board, then tx from stepper back to rx on comms. Also, your blue cable has the two wires back to front. When you line up both ends of the cable the same way round the colours should be on the same sides: |||| |||| |||| |||| | | | | | | | | |__by greenarrow - Controllers
This page documents wireing for the Nanotec ST5709S1208-B and Keling KL23H51-24-08B, but the model of the motor on bitsfrombytes is not listed. Does anyone know what the bitsfrombytes motor is / have specs for it?by greenarrow - Controllers
I had a quick read of the white paper, i didn't read it all but most of it seemed to be presenting a business case for it, rather than explaining much technical detail. Most of the technical info is just about concepts rather than actual processes, but hopefully they will do some good work to develop this technology, they may just be a bit paranoid at the moment. This is definitely something thaby greenarrow - General
I was using a stepper driver board from an old dot matrix printer (four power transistors in a chip) and running it at 12v before. I think you must be right about the firmware energising one coil at a time being the reason for the loss of torque, previously i was controlling the steppers from the parallel port and always had two coils energised at a time. I've just had a look at the relevant bitby greenarrow - Controllers
Thanks for your help, I connected the centre tap to +12v and the motor turns, i also tried connecting it to 0v and it worked too. I seem to be getting very low torque from the motors, much lower than i have had previously using the motors with a unipolar driver. This could be because i'm running two coils in series, but i don't think it will be possible to connect them in parallel with the centrby greenarrow - Controllers
Sorry i meant to write 2 and 5, i think i must have been looking at another diagram. I will give connecting the centre tap to +12v. thanksby greenarrow - Controllers
I've been trying to use some steppers i had lying round. They are 5 pin motors and have connections 1 and 4 are internally connected as in this diagram: I've tried unsuccessfully to use them with my generation 1 electronics, I don't think it is possible to drive these as bipolar because there will always be current flowing across the bridge and energising unwanted coils. Does anyone else had aby greenarrow - Controllers
These motors look pretty good, has anyone looked into the price?by greenarrow - Mechanics
JoeMcGuire Wrote: ------------------------------------------------------- > Green arrow, > > Thanks for that response, > > Did you consider ordering from Mouser? > > I'm weighing up my options. Rapid are out of stock > of a couple of the items on your list. > > Also Mouser will ship to the UK for $25, although > I imagine there may be import VAT on top. I didby greenarrow - United Kingdom RepRap User Group
Reading at the momentby greenarrow - United Kingdom RepRap User Group
JoeMcGuire Wrote: ------------------------------------------------------- > Hi, > > Is Arduino decimal a PIC programmer? if not what > is the most advisable PIC programmer to buy/make? > > Green arrow, > > I'm looking to use your shopping list for Rapid. > I've noted what you have said already on this > thread - is there anything since, you might have > orderedby greenarrow - United Kingdom RepRap User Group
Just thought, i should have mentioned that i have build a full set of boards with these parts and they work fine.by greenarrow - United Kingdom RepRap User Group
A couple of people have asked for a copy of my rapid electronics order so i thought i might as well post it here. It is not a perfect order so if anyone orders it would be great to see an edited version we can get perfect for anyone to be able to just use without checking The following comments just regard what may need to be looked at before ordering (do not use my list as an absolute of whatby greenarrow - United Kingdom RepRap User Group
I bought everything for generation 1 electronics a few months ago from rapid, i still have a spreadsheet with all the order codes in if it's useful to anyone. The only thing i couldn't get was a 4 pin molex power connector (pc power supply) but i did not ned one anwyas as im using a bench supply.by greenarrow - United Kingdom RepRap User Group
I've just found the somewhat embarrassing reason as to why snap commands were not making it back to the pc with my python module, i was using a baud rate of 9600 instead of 19200by greenarrow - RepRap Host
Hi, sorry for not replying to your help before, relating to the original problem, i've tried installing everything again from scratch as i had to re-install my entire system anyway. The software is working fine however when i enable the real hardware rather than the pseudo machine the software does no seem able to communicate with the electronics. I think this may be a problem with my electronicsby greenarrow - RepRap Host
Thanks, that info is great that looks like everything i need to get started. I'm going to have a proper look at it tomorrow and see if i can start my python module. Thanks, stefby greenarrow - RepRap Host
I've tried to installed the reprap host software (with all the required libraries) and it installs fine but when i try to run it i get errors. I have an nvidia graphics card (nvidia proprietary driver) but i don't get the error that is mentioned for nvidia cards. I've never done anything in java, i tried to follow up the errors but it didn't make much sense to me. Has anyone else had similar erroby greenarrow - RepRap Host
Looks good, i've been ecperimenting with extrufing tile grout from a syringe but i'm hoping to start using plastic soon. behold the power of self replicating cookiesby greenarrow - Reprappers
Did you go for a moving head (like darwin) or moving base (like mcwire) design? I've tired both and they both have their own merits. I made an paste extruder completely lego and a syringe that works pretty well. Here are some pics of the old design, i'm completely re-building it right now using a moving base design as the previous would have run into problems when mounting a plastic extruder ontoby greenarrow - General
I'm currently using stepper motors and a stepper driver board from an old dot matrix printer in my repstrap. The older the printer the better as the technology will be easier to adapt. Scanners will only have one stepper motor (and may be less powerfull) whereas most printers contain two often identical motors. The motors i'm using are significantly less powerful than the ones in the darwin desigby greenarrow - Reprappers
arturo Wrote: ------------------------------------------------------- > Hi there, > > > I will probably > > continue to develop my own python library on > the > > official hardware as it will help me to learn > how > > whole system works more thoroughly. > > since I am not familiar with Java (Reprap soft > language), but I am with Python, I'd love tby greenarrow - General
Samuel Wrote: ------------------------------------------------------- > Looks great. Nice job using Lego. Hopefully it can > successfully print the reprap parts you need. I > can't wait to see more pictures. > > -Samuel Thanks reece.arnott Wrote: ------------------------------------------------------- > I was going to suggest you post the details of > exactly which lego kby greenarrow - General
Here's an update: I've managed to do a five layer print of a letter 'I'. There is still a bit of distortion at the beginning of each line, i have found that extruding extra material st the start of every new line helps the material stick down better, but can result in the nozzle getting coated in excess material, my next idea is to suspend a piece of tissue outside of the print area so that thby greenarrow - General
ZachHoeken Wrote: ------------------------------------------------------- > the support material we're looking at is > polyfilla, or common wall spackle. it can be > removed in water. I haven't had a chance to post any new pictures recently, but i've got my machine to extrude tile grout from a syringe. It prints at a reasonable resolution, at the moment i have a few problems with driftby greenarrow - General
I'm interested, just need to wait until I get paid from my new job. Will you ship stuff to the UK? If so I will get all the PCBs, and probably most stuff in the shop.by greenarrow - Reprappers