[10-29-06]New location for the site: http://web.tampabay.rr.com/hazer/ The first 11 chapters are done, and are viewable. Ive checked everything, including the code. The next 10 chapters will cover the peripherals, so they will take more time. I hope to have them done at least 1 or 2 per week. My ISP is limited to 300MB per month, so post here to let me know if Ive reached my limit. This info is open to public, and criticism is highly wanted. Mostly, if there is anything that needs improvement (as far as more explanation or pictures). Toward the end, I plan to add a few things like interfacing to common LCD controllers, servo and stepper motors, flash eeprom, external wiring considerations, and also a way to convert code from one device to another. That last peice being important, as some people may find it too hard to locate a PIC16F872 over like 16F84 (or just too lazy to find it). 2 other projects in the works: Im drawing a schematic for an all-purpose JDM programmer that will program ALL 12, 16, 18 family Pics in DIP and PLCC packages. I may include Eagle PCB. Im doing the same for the ATMEL series AVRs. A one-does-all programmer (but not all AVRs, just the ones that support ICSP). The software is free (from Atmel), and the programmer will require external power source. If people like the Pic tutorials, I may move onto AVR stuff.
the coding for the chip you used in the tutorials isnt too different to the coding for the 16F628 is it? cos im trying to make one of these but i want it to recieve output from the serial port and display the correct thing.
the guide looks good.. i really want to learn this.. i havent read trough everything yet.. no time... but do you know any chematics for a programmer? or is it already on the page?
Plenty of schematics around on the net for programmers, however i'm lazy so I bought mine when I started with PICs ages ago.
Been outta town for past couple days. The 16F628 is a 18pin device. Im using a 28 pin device for the examples. The code wont work between the two, since Im using all of PortB as a byte input, all of PortC as a byte output, and a few pins on portA as control. I will give a custom schematic for the JDM design tonight. I might do a device table also, but in a few more days. I will at least give the names of devices that will be compatable with the example code. Since there are a few people who may only want to use 18 pin devices, I may go back and do more example code specific to those packages. EDIT: generic schematic is up for JDM programmer to work with IC-prog. Also a table with common PIC device names and how to connect to the JDM programmer. Example code is using a 28 pin device. Any 28 pin device will work with it, just change the list and include lines in the *.asm file. Please post any more concerns. Ive looked around for US and UK suppliers, but have not found much beyond the usual places.
Ive done some quick searching for US and UK suppliers of Pics: US: Digi-key www.arrow.com http://www.futurlec.com/ICADC.html http://www.glitchbuster.com/index.htm UK: http://www.mecanique.co.uk/ http://www.crownhill.co.uk/index.php I have no idea about most of these places. I try to pick-up the parts from Ebay when they are reasonable.
Sweet!! Ive been looking into PICs as a cheaper alternative to the Basic Stamp. This should give me the background on how to use them. What langage is used for programming? I have some experience in basic, and plan to learn something like C++ in the future.
Most used is assembly, nice low level stuff I know there is a C compiler out there for PICs though, as i've used it before.
Ive started in assembly. Once Ive gone over the different hardware of the Pic, Ill start going over the language, like the microchip shortcuts and macros, and give a few links for Picbasic. I preffer to start with assembly.
Hey guys, I was just wondering if anyone was even using this tutorial. I have no idea about its usage. Im also hoping for feedback about its usefulness. Just trying to see if its helping or not.
I already have the PIC's, I'm just waiting to get some money for the programmer. I think it's a very useful tutorial! Really! It needs to be stickified, and I'm sure other people from outside bit-tech are reading it as well. Maybe time for a counter to get yourself some selfesteem?
the usefullness? it is WERY usefull.. i'm trying to learn about PIC at school... this guyde is our main info source! thanks! I have big problems getting the programmer to work, but i have read a little tonight, so i know a few things to try out...
Think im gonna recomend this to some of my mates in the lower 6th, as we this cud b useful for their pic coursework. Our teacher doesn't really know that much about pic :|
Thanks guys. Smilodon: Which programmer are you using, and what is the problem? I may be able to help. Just so everyone knows, this tutorial is only publicized for bit-tech forum readers. I have no adds (cept the ones attached to the counter) and make no money from this. It was purely for the people here to take advantage of. Of course, word of mouth doesnt hurt. Update: Ive collected enough empty soda cans to purchase a few things like a stepper motor and oscilloscope to build more steps. The peripherals are where some of the intesting features come in to play. Coming soon: beyond-8bit-math routines stepper motor control RPM sense wire reading voltage and temperature monitoring HD44780 LCD interfacing general circuit interfacing techniques And Ive been working on some general electronics guides too for more simple components. Future add-ons: PLD (GALS and PALS) programming, techniques, and DIY programmers.
i'm usning a simple JMD (or was it JDM?) programmer... One is a bought one i got from my teacher and one is a homebulidt one... problem is that i just can't write to the PIC. at the best i can write one line (the second one) of the HEX code... of course this won't work... I have tried several things, and several computers... inernal and external powersuply... Nothing... I have also tried several programs and hex files... Have also tried dos-based programs...
Im assuming your using an F series Pic. Try just reading from the Pic to see whats in it. Also, have you seen a different chip work in the programmer?
it's a PIC 16F 84... I have tried reading it... it has a working ledchaser program.. i have 1 couple of those.. one is the original one witch holds the program i'm trying to get into the other ones... I have 2 other chips that i try to program the ledchaserprogram into... all are the same type... I know the programmer have been used to program some PIC's buildt in a card.. (can't remember what they are called... it's a "creditcard" with a chip buildt in it)... I think it have been used to other things aswell, but i'm not sure... Anyway, it has "PIC16C84" and "PIC16F84" printed on it, so i guess it _should_ work... but it doesn't Do i have too low voltage to program them? When the program tries to verify i get a message that says something about failed at adress 000h (IIRC)
