Friday, 28 September 2012

Crispy wires!

I was upgrading my Sanguinololu electronics from a version 1.0 to a 1.3a board today
so I could play with Marlin and to generally keep up to date.

I found the following when wiring it in.

Some rather crispy  wires and connectors!.

The red wires have gone black as has the connector block.

Definatly time to replace this part.

This was to my heated build platform.

Other than this the upgrade seems to have gone well. I just recompiled the firmware with the new board type, uploaded and all seem to go.  Still to do a real print though.
But now I will have to fix the HBP first...

Wednesday, 26 September 2012

4pi Reprap Electronics

This is the new 4pi Reprap controller from Kliment

Some people have requested to see the back of the 4pi, so here it is also.

It features lots of things, but for me the main ones are:

Atmel’s SAM3U processor, which runs on a 32-bit ARM Cortex-m3 core.
(not sure what speed its running at, but the CPU can run at 96 MHZ)  

High-speed USB, The micro controller communicates with your computer at 480Mbits

5 Stepper drivers and 5 FETs.

So far there is no firmware for this. It is still under development.

Build details about the board can be found at
And of course there is lots of info on the shop  

Saturday, 15 September 2012

boot loaders and Slic3r 0.9.2 notes

Just spent most of the night trying to get my Pololu USB AVR Programmer to put a boot loader on a 644p.

I've done this before on another chip with my works Atmel MKII AVR programmer, but it was a while ago.

After much mucking about I finally struck the right set of switches that worked for me

avrdude -B1 -pm644P -cavrispv2 -P/dev/ttyACM0 -U  flash:w:ATmegaBOOT_644P.hex -C avrdude.conf -v

(With a few full paths, for the hex file and config file)

The issue I had was that is was stopping at 97% eg

Writing | #################################################  | 97% 0.00s avrdude: stk500v2_command(): unknown status 0x80
avrdude: stk500v2_paged_write: write command failed
Writing | ################################################## | 100% 2.07s

avrdude: failed to write flash memory, rc=-1

At first I had -B6 as per my old programmer, and I tried all sorts of larger numbers, but didn’t think to try smaller till now.

NB previously I had updated the firmware in the AVR programmer to version 1.07 
Documentation on how to do this can be found here

Another issue I had is that the Sanguino files here dont all seem to work.
I attempted to use the file since im using arduino core 0023
But the Programmer advised me that the boot image was trying to load into the wrong place. I went back to the tryied and true and had no further issues


Slic3r 0.9.2 is out.  But it seems to be causing a lot of confusion with regards to configuration files. (it really confused me till I had a long chat with Sound, the author)

There are now two completely separate configuration systems.

If you use the --load command line, and want to make any changes, you must use the export menu item to save them. The save button is for the new system only.

Pronterface uses the --load system 

If you want to use the new system, save your settings under new names with the save button. You dont get to chose a directory, in linux this is saved in the hidden directory ~/.Slic3r
NB don't save as default, default is not editable. You will just create two sets of configuration files both called default!

Now there is a big caveot with using the new configuration files. You can't load them via the --load command line option. They can only be used from the GUI.

Currently the way I use slic3r is to have different config files for each machine and filiment type etc. I launch Slic3r, load up my STL files, set my printer and filiment and slice to .gcode. I then just load the gcode into pronterface to print.

If you dont do it this way you have to export every combination of config files into .ini files and edit Pronterface to load the ini file you wish to use, which is not particularly nice

Monday, 10 September 2012

Reprap SL PCB's

I have sold 95% of my inventory. I have about 2 left and 3 I kept for myself. But I have sold the remaining 95 Sanuinololu 1.3a PCB's

This took over a year to sell them. The New Zealand Customer base is two small, and global customers seem to want next day shipping for $2.

A lot of people also wanted  RAMPS boards (without any real justifications). So I was quite glad I did that swap of 20 SL boards for 20 older ramps boards.

I'm not going to list any more.

So that it, no more PCB's from me.

I hope the majority of boards are happily printing somewhere in the world. 

Sunday, 9 September 2012

Rostock platform

Despite not having enough bolts or washers I have tacked the Rostock together

The rod clamps are meant to have 18 bolts at the bottom and 12 at the top. I'm presently using 12 total. 

But its starting to look much more like a Rostock

Saturday, 8 September 2012

Rostock Base

The Rostock base is done.

Measuring out the angles is a little tricky. I didn’t like the Printable drill jig and resorted to good old fashioned ruler and protractor, using this as a guide

I also really hate using wood.. it so imprecise and messy.

Still waiting for washers and bolts, so my options of what to do next are limited.

Tuesday, 4 September 2012

Rostock starfish

Ok,its really a platform, 6 joints, 6 rods, 12 12mm M3 cap head screws, 6 20mm cap head screws and 12 m3 washers. There probably should be 12 more washers. 

The Rostock page is not very well documented in regards parts. The unfinished BOD says 20mm screws, but in the pictures they are flush which is 14mm. Also they are screwed into the plastic only. I'm presently using m3 nuts, but these will fall off.

I will be investing in some M3 lock nuts soon.

Unfortunately I've run out of M3 washers for now, so its time to look at marking out the base.

Monday, 3 September 2012

My Rostock

Since a picture is worth a 1000 words...

The bulk of a Rostock for myself.

I haven’t printed a extruder yet as I am unsure what I want to use.  I have PTFE tube As I will try a bowden style.

And 5 minutes later

These are just sitting together, but looks good.