Re: Raspberry Pi based electronics ideas
I have my Raspberry Pi Running my Printer. I have a python script polling a folder on the Rasppi for gcode files, I then have another app on my laptops than drop the gcode files to a UNC path on the...
View ArticleRe: Heatbed shuts down - sometimes
It was set to PID, but switching it to bang-bang didn't fix the problem. It turned out to be the MOSFET, which was getting quite hot. I replaced the RAMPS and it is working now. Thanks for your help.
View ArticleRe: Raspberry Pi based electronics ideas
A basic problem in porting Arduino 3D printer code to a processor running a Linux operating system, is how to establish a non-blocking serial communication between G code reading software and the low...
View ArticleRe: Raspberry Pi based electronics ideas
Ah sorry, maybe I should be more precise. Its nothing special. I plugged the reprap melzi and the pi and it prints using the printcore. The python script just sends the gcode to the melzi via usb!
View ArticleRe: Raspberry Pi based electronics ideas
There's also OctoPrint if you're just looking to put a network interface on an existing printer with serial support. I've connected mine directly (with level-shifting) from RAMPS 1.4 to the...
View ArticleRe: repstrap electronics
Petrus what did you use to control the heat? I'm making a PID controller with my arduino. Its coming along nicely, but very slowly because my coding skills are severely lacking. So far I have my...
View ArticleMatchboxARM
Guys, There's an interesting kickstarter called MatchboxARM: [www.kickstarter.com] In essence, it's ARM Cortex-M3 chip running 72MHz with 64Kb flash on a small board cheap enough not only for...
View ArticleRe: Melzi connection/freezing help
I am now also having a similar problem, the printer has been working fine for about a month, last night about an hour before the end of a 5 hour print I noticed the Pronterface was disconnected. the...
View ArticleRe: Melzi connection/freezing help
I still havent resolved mine yet either. I have been speaking to Ian at RepRapPro and it looks like the restance of my heatbed is too low. It should be 1.3 ohms and mine is 1ohms. The lower the...
View ArticleRe: Melzi connection/freezing help
Thanks for the update man have you tried running with the heatbed of does it work ok then?
View ArticleMarlin Endstop wiring
Read or do not respond. Ok I know that marlin uses a non standard mechanical end-stop wiring scheme. I'm using radioshack endstops 275-0016 (I DO NOT NEED AND OR WANT THE CODING JUST A WIRING DIAGRAM)...
View ArticleRe: MatchboxARM
Traumflug is already working on a Cortex M0 version of Gen7. Great minds think alike I guess.
View ArticleRe: Marlin Endstop wiring
The second link is correct. You connect the normally closed contacts between the input and ground. There needs to be a pull up but often just the internal pull ups in the chip are used. They need to...
View ArticleRe: Melzi connection/freezing help
Aye, if i run with just the hotends on its fine. Does your heatbed heat up quickly? I read somewhere it normally take around 20 minutes to get to 57 degrees but I can't confirm this. Mines normally...
View ArticleRe: MatchboxARM
That looks like a nice little board, but the Teensy 3.0 has been around for a while and is even slightly cheaper [www.pjrc.com] But I think the problem is really not the hardware, it's about the...
View ArticleRe: Melzi connection/freezing help
I will try that tonight as admittedly I usually turn the heaters on first when it starts up so it could be that causing it. But its been fine for over a month not sure how the resistance could drop...
View ArticleClik here to view.
project update: first test fixture finished
I have added an update on the project status on my Ulule-page. Now the first test fixture for the final QA test is ready and I am still working on the needed test electronics and test firmware. All...
View ArticleRe: twitching stepper motors
Have you adjusted the pots on your controller? What controller are you using?
View ArticleRe: Melzi connection/freezing help
OK so its started and homed OK without crapping out when I do not turn the heat-bed on. I have also noticed my heat-bed is measuring about 10 Degrees hotter than it should be... I'm fairly confident...
View Article