The arduino one is the one I had seen, thanks for the links everyone some good stuff!by annodomini2 - Controllers
I saw a link somewhere think for a simple ICSP programmer using the parallel port and a few resistors, maybe a couple of caps, but can't seem to find the link. You could then use AVR Dude to program it, anyone got a link.by annodomini2 - Controllers
Grogyan Wrote: ------------------------------------------------------- > might be an idea to have this stickied as Win 7 > gets officially tomorrow Technically it was released on the 4th Aug, but only for MSDN subscribersby annodomini2 - RepRap Host
Do you have any details on the cable hack?by annodomini2 - Controllers
Look in the software forum there are supposedly issues with the software and windows 64bitby annodomini2 - Controllers
English version: English Versionby annodomini2 - Mechanics
2 USB could also be implemented using a USB to TTL and one of the serial ports.by annodomini2 - Controllers
Currently building a Sanguino dev board on breadboard I have an RS232 on my pc and didn't want to shell out for a USB to TTL cable, the schematic of the dev unit on the sanguino site shows the RTS signal from the USB->TTL connected to the reset pin of the ATMega644 via a Cap, is this a component of the programming mechanism and required? I have an ST202ECN connected up as described in theirby annodomini2 - Controllers
ARM9 is a bit overkill for most peripherals, they are typically used in embedded display systems and some small netbooks Any specific reason for 2 USB? If it was one usb port you may want to look at something like an LPC21xx (ARM7-TDMI core) Or newly released LPC17xx series with the Cortex M3 core. No I don't work for Phillips, but they tend to be the cheaper option.by annodomini2 - Controllers
aka47 Wrote: ------------------------------------------------------- > Given that a divide operation takes the most > processor cycles (how many depends on what your > are dividing by what) the round robin shared > memory access would make more sense with the > divide, than without it. > > If a core is occupied dividing it would not be > contending for round robin accessby annodomini2 - Controllers
letsburn00 Wrote: ------------------------------------------------------- > From what I understand, the problem with all the > granual extruders is that they work perfectly the > first time you start them up, but the second time > they can't be started because the melted plastic > mixes with the granuals and you can't start the > drive again. How do they deal with this in injeby annodomini2 - General
Could you use a simple hydraulic gear pump to 'pump' the slip to the nozzle and a 3 position 3 port direction control valve and a water tank to wash out the pipe when its completed.by annodomini2 - Paste Extrusion Working Group
Look at bits for bytes they sell kitsby annodomini2 - For Sale
Maybe more cost effective to get a local pcb fab to make the board, the designs are open source and on sourceforge.by annodomini2 - United Kingdom RepRap User Group
VDX Wrote: ------------------------------------------------------- > ... unfortunatelly the TIG-plasmabeam will blow > away the powder, so you can't build homogene trays > or surfaces > > Another common method is blowing metallic powder > through a plasmabeam so molten droplets will land > and fuze to the surface ... > > Viktor What about focussed induction heating?by annodomini2 - General
QuoteIompoc"Uh, i thought carbon nanotubes were known for their rigidity, not their elasticity!" You're thinking of tensile strength.by annodomini2 - Let's design something! (I've got an idea ...)
Please see the attached image which is a screen dump of me in the forum.by annodomini2 - Administration, Announcements, Policy
kitep Wrote: ------------------------------------------------------- > When you goto "My Control Center" -> "Forum > Settings", what are "thread override - list" and > "thread override - read" set to? Default, > Threaded, or Flat? > > With threaded, the new posts in a topic come after > the old posts in a topic, so I could see how > they'd be hard to find. > >by annodomini2 - Administration, Announcements, Policy
Mine don't reorder, I may have missed an option, but I believe i've tried everything in forum settingsby annodomini2 - Administration, Announcements, Policy
There was an idea posted on CNET of a giant cartesian bot that could print a house (yes one you could live in) using a 3 axis bot and a concrete pump.by annodomini2 - General
I respect that there are threads relating to the forum software and this may already have been covered. Is it possible to have an option to bring updated threads to the top of the list? Reason being, some of the forums have lots of pages and as a result the new posts may be on page 25 for example, but you have to search the forum to find them, this is very inconvenient. It may be the design ofby annodomini2 - Administration, Announcements, Policy
Anyone considered using piezo speakers?by annodomini2 - Plastic Extruder Working Group
You may want to investigate FPGAs or Field Programmable Gate Arrays An IC version similar to what you are talking about.by annodomini2 - General
Larry_Pfeffer Wrote: ------------------------------------------------------- > Greetings all, > > I agree that pre-computing the bit patterns is a > good idea, esp. for use in an ISR. However, if > they are pre-computable, you'd do much better to > make them const (const enums is fine) or #defines. > Then the compiler can use the fastest (of many) > ways to get that bitby annodomini2 - RepRap Host
Depends on the compiler and how many conditionals to if it will use a jump table. IMHO, I would build the bit allocations in the function where you declare the motor phases and remove the calculation from the interrupt completely, you want as little in there as possible. I would suggest using an enumeration with the Bit patterns set to the value such as I did with the define statements, makes tby annodomini2 - RepRap Host
You will find this more code size and runtime friendly: void SysTickHandler(void) { //if (ledtogglestate==0) {GPIO_WriteBit(GPIOB,GPIO_Pin_11,Bit_SET); ledtogglestate=1;} //else {GPIO_WriteBit(GPIOB,GPIO_Pin_11,Bit_RESET); ledtogglestate=0;} // piezo U16 Motor1Phase = 0; U16 Motor2Phase = 0; U16 Motor3Phase = 0; U16 Motor4Phase = 0; GPIO_ResetBits(GPIOC, 0b11110000000000); GPIO_ResetBiby annodomini2 - RepRap Host
grael Wrote: ------------------------------------------------------- > The beagle board is ARM based, and a fast one at > that, but what concerns me, is the life cycle of > the chip. I could see it being used in at least > one big application, but it's got a lot of > functionality on that chip which seems unique, > plusses on one hand, but messy to replicate on the > other.by annodomini2 - Controllers
Larry_Pfeffer Wrote: ------------------------------------------------------- > annodomini2 Wrote: > > > > > Does the cortex have an FPU? Not really had > much > > exposure to ARM chips > > > The Cortex M3 (and M0) do not have an FPU. (Not > sure about the other variants, like the A-series, > as used in the beagle board.) The full ARM > architectby annodomini2 - Controllers