i wanted the buffer to be bigger but needed to free up ram, so i set the buffer of the reprap gcode to buffer=2 - one to actively use, and one to prepair, and the rest is directly taken from the 1024 serial buffer if 1024-80 bytes are received, then the ok tx signals are reduced to 1 at a time. I then looked at the buffer size, and increased it to 512, and everything worked ok. i send several tx "OK." acknowledge commands back to reprap. tx was barely even on! - so i tried something. i hooked up an oscope and checked my signals, and checked the rx and tx signals. I've worked on the arduino for optimization and still have had slow speeds. I accidentally fixed this from my latest released software version, but will need to change it to do better buffering, so will implement the serial alternative. that will speed up the arduino immensely, and stop the sudden pauses that bind the threaded rod system, and slow down my pull chain version of my reprap. The partial answer is to now move the serial communication over to an alternative, that allows buffering of send data, sending data while receiving data, and multiple tasking and interruption of most of the routine during send data except for output mode change. the arduino is not capable of buffering output data like it is on input data! In fact the arduino stops doing anything else while sending data. ![]() then i looked up the arduino uart system, and finally it hit. Also this meant that i was sending the oks at gcode processing time, and that except for the very 1st gcode line, the acknowledgment was sent when the next command was in process, and the buffer was full, so it was not done when the calculations and movements were performed, but in between.Įureka! i dived into the code, and sure enough after enabling 4 buffers again had timing issues with the threaded rod design. looking into this further, one of the changes i had implemented was reducing the line buffer from 4 commands to 2 commands, and increased the serial data buffer, and sent multiple oks back to host to receive more than one line of gcode data at a time. my last tweak to improve the performance of the sending of commands to arduino from host accidentally gave me a clue as to why performance was just not faster from sending data over buffer more than one line at a time, but it was also not missing steps. I have used the reprap 5d code, and had been tweaking it for some time. it just did not make sense as to why it was loosing steps and also communicating so slowly. Wings 3D is open source and completely free for use in both personal and commercial projects.I have been having issues forever with the arduino and its performance especially for threaded rod systems. This is the data structure used to store the adjacency relationships between edges, faces, and vertices in a Wings 3D model. Wings 3D gets its name from the Winged Edge Data Structure (WEDS). ![]() Wings 3D is written in Erlang, an open source, functional programming language distributed by Ericsson. There is no support in Wings for animation. ![]() Wings 3D offers a wide range of modeling tools, a customizable interface, support for lights and materials, and a built-in AutoUV mapping facility. Wings 3D is currently maintained by Dan with the help of the great community. Richard Jones (optigon) maintained Wings and coded many new features between 20. Originally inspired by Nendo and Mirai from Izware, Wings 3D has been developed since 2001, when Björn Gustavsson (bjorng) and Dan Gudmundsson (dgud) first started the project. Wings 3D is an advanced subdivision modeler that is both powerful and easy to use.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |