Ok, I have readed some more about interrupts, still I have many questions. First, in sdcc, every interrupt has a number. void high_isr(void) interrupt 1 { But I can find nowhere a list of all interrupt numbers. So I dont know what is the number of AD converter in 16f877. There is really little information about interrupts and sdcc on the net. What I could find are just these: What is reallby khiraly - RepRap Host
Im playing with an 16f877 and it has many(8). Just cant find a simple C program as an example. And the resolution would be 10 bit if im correct. Im playing with an idea to measure a 4-20mA current loop. I have builded the hardware, I have stuck with the programming currently.by khiraly - RepRap Host
Hi! Im wondering, if there is any A/D conversion in the original firmware code (for pic using sdcc). I want to write a simple C program to measure volt between 0-5Volt. So I want to use the pic's builtin A/D converter and Im looking for simple code I thought the extruder use the A/D converter for measuring the temperature, but I dont find anything in the sourcecode (extruder1.c, extruder2.c)by khiraly - RepRap Host
"but the most common configuration seems to be half-duplex RS485 which needs two wires plus earth" I dont think earth is required. If it is half duplex it is only two wires BUS+, BUS-. I had a device, were the pinouts was: 24V, GND, BUS+, BUS- But I think the GND is not a requirement for the communication. Simply it is often the case, that there is a GND line, but it is for power supply, andby khiraly - Controllers
JBB wrote: "Communications protocols such as RS232 get around these issues by using signals which are driven to both rails" I dont understand this part. Could you elaborate a bit more? For a simple rs232 communication 3wire required (RX, TX, GND). Do you mean, that the logical one is -5V and the logical zero is +5V and the 0V is not valid? --- As I see the rs232 and RS485 are really the sameby khiraly - Controllers
Thank you very much! I dont know how can I that blind;-\by khiraly - RepRap Host
Hi! I have a prototype board, with a pic16f877A microprocessor. I have some demo assembly file, which I can compile and upload to the microprocessor, and it works! The problem, that I cant write a really simple C program to blink a led. It compiles succesfully, but when I upload to the device, nothing happens Here is the sourcecode: #include /* -----------------------------------------------by khiraly - RepRap Host
Im in! Count me with two sets maybe three (I need to ask for my friend if he is still interested in it). So 2 is for sure and maybe 3. Oh, and while im at it, can I ask what else do you need to finish in this page?: So what is still missing there? (Credit card, and Im located in Hungary (European Union)). Khiralyby khiraly - Mechanics
>one easy method i used to line up the two sides is this: >1st, iron down one side. position doesn't matter too much. this is your reference >side. >2nd, drill out the mounting holes, flip the board over. accuracy counts here. >3rd, line the mounting holes up with the print's mounting holes, and secure with a >pushpin. use 2-3 pins to get a solid hold. >4th. gently iron onby khiraly - General
Hi! I have assembled an ICD2 pic programmer, and Im interested to learn pic programming using sdcc. I want to connect an rs485 device with my computer through a 16F877 PIC using sdcc. Can somebody point me some resource and hints to do? I have found this topic: But the link does not work: I now its not really related with reprap, but Im planning to learn pic programming first. (main difficuby khiraly - RepRap Host
Thanks Zach for the update. Cant wait to put my dorty hands on the parts!by khiraly - General
Zach, I was a bit in silence in the past few weeks, but I have been following your progress closely. If Im right your status is more or less the following: - you have improved the mcwire design, so it more wear resistant (teflon strip) - you have migrated towards the ardour platform - more smoother motor running What is missing which is prevent the design actually functioning? (the first goaby khiraly - General
>> >spring tensioned skate bearing design >> Cant imagine it (maybe my english skill), would >> you brother to explain it with some >> image/photos?winking smiley >I'll try. It helps if you understand the current bearing arm setup. Right now there is one >bearing on an arm that keeps the stage pressed up against the rail. you can see the pictures of >that on tby khiraly - General
> i ordered the first-run lasercut parts a couple weeks ago, and they are here now. i started work on it this weekend, but i forgot to order some parts. i did do the first stage assembly. once my parts get here (tomorrow hopefully) then i'll do the rest of the assembly. OMG! Please take photos (lot of photos) and post on the main blog or here. A photo is more than thousand of word... >skaby khiraly - General
Is there any progress on this design? Im looking really forward for any news. Zach: how your design are progress? I wanna buy one from this kit...by khiraly - General
Hi! Im really enjoying nophead blogs, and noticed, that he is using an usb attached digital storage oscilloscope (its much more cheaper as a standalone scope). My question is, is there a software under linux which is capable to display an oscilloscope like interface? Or more simpler: how can I reproduce this under linux: So which software and which hardware used by nophead? How much (and wherby khiraly - Controllers
>yes, you need their software. however, its completely free... Yep it doesn't work in linux. (it installs fine under wine, it runs but hard to work with). I was able to see the part, but for check the price I was required to fill the descriptions (model, without motor, etc), and fill the payment method too (my mastercard number, etc). So I stopped there. However I think we should focus on oby khiraly - General
Omega: do I need to download their sotware to be able to see your version? Can you post a screenshot?by khiraly - General
Hope I will get answer till 10 of septemberby khiraly - General
No reply so far. There are two solution: - either I do it myself (need access to the mediawiki installed directory, and you need to TRUST me) - I write a step-by-step tutorial, and somebody (who have access) do it. From friday I will be off-home, so I will be available after 10 of september.by khiraly - General
Ok, Im volunteering to do this job. Im looking for sebastian's email address... Edit: Am I right, that he is the right person?: Ok I have contacted sebastian, waiting for his reply.by khiraly - General
Hi! It looks like there are some wiki pages which are spammed. Like this one: and this one: and this: It seems, that all the objects.reprap.org is infected:by khiraly - General
1. It would be nice to have some graphical help, like a tree. 2. Should the help icon default expanded (having description for each module). and the help icon is a link to the appropriate wiki page. 3. Having a link of each part to the wiki page would be niceby khiraly - RepRap Host
Hi! Im reading the forums and the webpage some day now, but have some questions (and difficulties). Difficulties: - Does the wiki contain a table of content page, or there is somewhere available all the wiki pages listed? - Cant find some generic background info. So if someone not only want to build a reprap machine but want to understand the electronics and want to read some more is not easyby khiraly - RepRap Host