I think that the accumulating vessel was only pertinent to what they were doing in recirculation. In our case, we would have the pump directly providing pressure to the extrusion orifice. It would be a matter of matching the speed of the pump motor to the extrusion rate needed, much like our mk2 extruder does with the filament melted and squirted out the end.by bartlee45 - Paste Extrusion Working Group
I thought the pump would be integral to the delivery system. How does the accumulating vessel figure into that?by bartlee45 - Paste Extrusion Working Group
Thats a sweet design. Simpler and more efficientby bartlee45 - Paste Extrusion Working Group
If you or anyone else wants to contribute to the Pic Programmer, please PM Simon and I would also ask that you please PM me so that I know your interest right away. I haven't heard about any interest from anyone else but Simon might have. He's been real busy lately though. I'm hoping to hear from him soon. I've just been fairly quiet about the PIC PROGRAMMER till I had something that was a goodby bartlee45 - General
Well I guess here might be as good a place to leave a message about what I've been doing with this idea that Simon got me interested in. Here's my status to date. 1. Investigated how pics such as 16f628A/48A are programmed. The nitty is real gritty but the basics are you send commands clocked bit at a time to the data and clock leads. To get the chip in program/verify mode you first set MCLR, VDby bartlee45 - Controllers
Doh! I guess I didn't check but I have had my head in code and prototyping.. look for a post from me in contributors. I'm in that pseudo developer modeby bartlee45 - General
Please join Reprappers if you are so inclined. You can find Adrian Bowyer on the list of people and email him asking to be added to the list. Your experiences are welcomed.by bartlee45 - General
The link was messed up but I found it. Thats pretty cool. Must be lots of wear and tear on the tube.by bartlee45 - Paste Extrusion Working Group
If you had asked many of us personally, we might have told you switches don't last very long for any number of reasons. But if all of us listened to conventional wisdom all the time, we'd be saying .. reprap what's that.. no.. the cheapest FDM is around 15000. Definitely not for the hobbyists. I like hearing what others find out, good, bad or ugly. And some of it is darned nice Keep up the experby bartlee45 - General
Well if you do that and take up lots of room, then replacing it with a small Darwin or two might be more attractive in the end. Its a matter of comparisonby bartlee45 - Polymer Working Group
Cool. Just thought I'd add my $0.02 since you already had most of the stuff already. I was thinking you could mount the tool holder plate at a fixed height, just moving x and y relative to the lathe to provide the basics. No need for the z axis in my estimation as long as you get the height of the cutting head right for the lathe and firmly secured. I'm low on theory and experience here, simply bby bartlee45 - Reprappers
This is naturally post 1.0. I would like to propose an idea about circuit construction that could be done by hand initially and through more automated methods later. The idea combines earlier efforts to create channels to extrude molten metals into with something I saw on Discover about Eye Glasses manufacturing. The idea is to lay pieces of copper forming traces into the channels in place of liqby bartlee45 - General
Very nice. Could you mount a tool post as a head and have the lathe firmly positioned near by to be a multifunction device?.by bartlee45 - Reprappers
I'd think Forrest has that as a goal for his telepresence project but he's been busy. I certainly think that lots of what we have would be suitable for an arm as part of an enhancement for manipulation and self feeding etc.by bartlee45 - General
I did build the stripboard JDM, slightly modified. I used a 12 volt zener and a couple extra diodes (.6v x2 = 1.2) and 12 + 1.2 is right around 13 It had to be referenced to the same potential as the 5v zener since I was providing a seperate voltag rather than adding to the 5v which is still required. That was fairly trivial but I wasn't sure if something else would be a problem with my doing thby bartlee45 - General
I was just wondering if you were still having problems programming PICs. I've been reading a lot about programming them and now know quite a bit as far as the 16f628 and similar pics go. The voltages and the sequence in which they are applied are key. Then it's just 2 lines, the clock and data and the data format for making it do what you tell it. Thats what makes ICSP (In Circuit Serial Programmby bartlee45 - General
Did you ever take a look at Adrian's post? Sorry I don't know how to add links but here is the address in text.by bartlee45 - General
Welcome Danail. Here's a starting point: We are on our way to finalizing the 1.0 release. You can get familiar with reading the topic I started you on. Then you can decide on how you want to build one. The early versions were bread-boarded, there are kicad schematics and board layouts along with instructions for making your own. Also if you look through the forum, Zach is getting a set of boardsby bartlee45 - Reprappers
Just to finish this up for now, I saw a post on the SDCC forums likely to be the same problem I was having. I think this is what Simon was referring to about running out of memory.'error: no target memory available for section "code_idata"' is indicating we've run out of memory according to the response there.by bartlee45 - General
Wow, sounds like a Win/Win. Better reprapping through chemistry!by bartlee45 - Polymer Working Group
I glanced at Kuka's page. Looks expensive, when they invite you to a one on one experience rather than just posting a price list.by bartlee45 - General
Here's the output from as far as I've been able to get. I don't know how much there is to do after error: no target memory available for section "code_idata" but haven't been able to crack what that means yet. Here's the output to make it look like I've been working hard. (I typed the make, the computer did the rest) $ make make -C share make[1]: Entering directory `/usr/src/reprap/firmware/shby bartlee45 - General
I was playing around with the source some more last night and got most of the way through the firmware build but ran into a snag at getting __sdcc_gsinit_startup linked in. Saw something about specifying something on a link line to get an empty vector table for an interrupt that was needed, so I'll keep investigating. My big changes were getting rid of all of BIT_AT(PORTA_ADDR, 0) PORTA0; BIT_ATby bartlee45 - General
In the file pic16f628.h generated by inc2h.pl the definition of PORTA_ADDR already exists as #define PORTA_ADDR 0x0005 So what we have in pic14.h is essentially a copy of what used to be the generated part of SDCC's defines for the 16f628. I wanted to post this first but it may just take replacing the contents of the new 16f628.h in our new pic14.h (As an aside for those that don't know, as I diby bartlee45 - General
Long is right (I watched it all)! But some good stuff in there.by bartlee45 - General
Thought I would touch this up. After cleaning up cygwin install and following instructions on sdcc page for setting up cygwin, I followed Simon's instructions and was able to build software. Still don't know what the answer is for the Java comms portion is yet though. As stated in another post, I was able to get a successful response from my stepper circuit using poke after doing all that.by bartlee45 - General
Sorry, Mea Culpa. I'm not using the Max 232 chip, I'm using a simpler circuit and just chopping off the negative swing and inverting the signal logic so between 0 and the somewhere near the Pic VDD of +12. I was wrong I just got confused. That's my story and I'm sticking with it.by bartlee45 - General
Well I think that the whole point of the comms board is to get the circuit up to rs232 levels so that there won't be the problem you just described.by bartlee45 - General
Lol, I just noticed his breadboard -was- the smileyby bartlee45 - General
Corey, the JDM programs 16f628s as well as others. The 16C84 is an earlier and I think smaller model. Read the instructions closely, I seem to remember something about a pin that was talked about that I had to figure out what to do with. Tying it low or high through a header, depending on whether you need to do other types of chips. Give another shout when you get to that or if you have other proby bartlee45 - General