here is the board that is being tested these days
They have on board LM317/337 based PSU, an input filter based on OPA2134, an extension slot for expanding to multichannel, onboard ICSP connector and Quad RCAs for input and output.
Seem like code will be delayed further as this week I have CFP prep exams.
They have on board LM317/337 based PSU, an input filter based on OPA2134, an extension slot for expanding to multichannel, onboard ICSP connector and Quad RCAs for input and output.
Seem like code will be delayed further as this week I have CFP prep exams.
my amps
pls also look into my prepration.All these stuffs are awating ur help,now i use them by hooking up a 5.1 dvd player. Converting it into a AV receiver ............................i think a will take some time.
pls also look into my prepration.All these stuffs are awating ur help,now i use them by hooking up a 5.1 dvd player. Converting it into a AV receiver ............................i think a will take some time.
firmware?
aren't u all interested in this project,as the thread is not moving .It seems as if only boasting is done on this site ,when it comes to apply logic & brains all give up.All the guys are JOAMON,jack of all master of none.Frankly speaking i don't have knowledge of programming PIC,in hardware assembling & testing i am ok.
pls guys finish the stuff in this birth.
😕
aren't u all interested in this project,as the thread is not moving .It seems as if only boasting is done on this site ,when it comes to apply logic & brains all give up.All the guys are JOAMON,jack of all master of none.Frankly speaking i don't have knowledge of programming PIC,in hardware assembling & testing i am ok.
pls guys finish the stuff in this birth.
😕
Ravi:
there is no point in getting disappointed, remeber the acronym used for the forum is "DIY" Do It Yourself.
Here normally people share their work or ideas, but there is no complusion to do it for others, or to complete a project by leaving aside personal and professional comittments.
I spend more than two years in the hope that someone will do the firmware for me, till one day I finally decided enough is enough, no one will spoon feed me.
30 minutes or so googling let me find "C for dummies", I downloaded it and started studying it, after about 10 days or so I was able to test my knowledge and do the coding myself.
I would suggest the same to you.
As for boasting havent you heard the term "PUNJABI BARAK" 😉
Here is the preliminary code that I did few weeks back, It works fine but need further tweaking for LCD/VFD interface and rotary encoder.
These days I am very busy in studies as I have two exams coming up CFP and CFA I, therefore giving time to the project are impossible.
Give the hex file a try and take my advice start learning C.
there is no point in getting disappointed, remeber the acronym used for the forum is "DIY" Do It Yourself.
Here normally people share their work or ideas, but there is no complusion to do it for others, or to complete a project by leaving aside personal and professional comittments.
I spend more than two years in the hope that someone will do the firmware for me, till one day I finally decided enough is enough, no one will spoon feed me.
30 minutes or so googling let me find "C for dummies", I downloaded it and started studying it, after about 10 days or so I was able to test my knowledge and do the coding myself.
I would suggest the same to you.
As for boasting havent you heard the term "PUNJABI BARAK" 😉
Here is the preliminary code that I did few weeks back, It works fine but need further tweaking for LCD/VFD interface and rotary encoder.
These days I am very busy in studies as I have two exams coming up CFP and CFA I, therefore giving time to the project are impossible.
Give the hex file a try and take my advice start learning C.
sourcecode?
Dear Abid,
I know that DIY (Do it Yourself) but at the same time i know my limits that it would take me year to learn for this particular project. Actually i am asking help for a fraction of part & undoubtly this part is the heart of this project.So thanks for giving life to the project,ur help is highely appreciated.It would had been better if u had posted the SOURCE CODE so that we could also do the tweakings .
I am learning the PICBASIC i think this is much easier for me to learn.
Dear Abid,
I know that DIY (Do it Yourself) but at the same time i know my limits that it would take me year to learn for this particular project. Actually i am asking help for a fraction of part & undoubtly this part is the heart of this project.So thanks for giving life to the project,ur help is highely appreciated.It would had been better if u had posted the SOURCE CODE so that we could also do the tweakings .
I am learning the PICBASIC i think this is much easier for me to learn.
sourcecode?
Dear Abid,
I know that DIY (Do it Yourself) but at the same time i know my limits that it would take me year to learn for this particular project. Actually i am asking help for a fraction of part & undoubtly this part is the heart of this project.So thanks for giving life to the project,ur help is highely appreciated.It would had been better if u had posted the SOURCE CODE so that we could also do the tweakings .
I am learning the PICBASIC i think this is much easier for me to learn.
Dear Abid,
I know that DIY (Do it Yourself) but at the same time i know my limits that it would take me year to learn for this particular project. Actually i am asking help for a fraction of part & undoubtly this part is the heart of this project.So thanks for giving life to the project,ur help is highely appreciated.It would had been better if u had posted the SOURCE CODE so that we could also do the tweakings .
I am learning the PICBASIC i think this is much easier for me to learn.
Thanks ravi fro understanding.
I dont want to start a debate/ flames that picbasic is better or C.
I have tried my luck with it and ended up banging my head against the wall, I couldnt even get the relay routine going.
When I shifted to C, man it was easy as peanuts.
for help in programming please refer to following websites, hats off to these guys who have provided their source codes for other without any charge.
http://www.littlefishbicycles.com/preamp/index.html
http://www.audiodesignguide.com/Volume/index.html
and attached is my cource code, i wanted to share the complete bug free code, since you want is desperately so here it is.
Rehan
I dont want to start a debate/ flames that picbasic is better or C.
I have tried my luck with it and ended up banging my head against the wall, I couldnt even get the relay routine going.
When I shifted to C, man it was easy as peanuts.
for help in programming please refer to following websites, hats off to these guys who have provided their source codes for other without any charge.
http://www.littlefishbicycles.com/preamp/index.html
http://www.audiodesignguide.com/Volume/index.html
and attached is my cource code, i wanted to share the complete bug free code, since you want is desperately so here it is.
Rehan
Dear Abid:
I don't know the way i should thank u for ur co-operation. Actually on analog side i am ok but it seems as if i will have to learn programming. I ignored it in my engineering course but i will learn it now.Apart from my hectic work schedule i will definitely spend some hours.
I needed ur help because i have only 3 pcs of Q chip & i have already lost one chip due to bad program & i didn't wanted to lose further.
I greately appreciate ur work & above all u r really one of the best person on this DIY AUDIO forum.
Thanks i am going to test ur stuff.
I don't know the way i should thank u for ur co-operation. Actually on analog side i am ok but it seems as if i will have to learn programming. I ignored it in my engineering course but i will learn it now.Apart from my hectic work schedule i will definitely spend some hours.
I needed ur help because i have only 3 pcs of Q chip & i have already lost one chip due to bad program & i didn't wanted to lose further.
I greately appreciate ur work & above all u r really one of the best person on this DIY AUDIO forum.
Thanks i am going to test ur stuff.
The code I posted was only for PGA.
No QS, for QS the code is very complicated, first you have to design menu logic, then menu itself and sub routines.
I have no intentions of putting the QS code here.
Drop me an email with your working on the QS code and I ll try to help you out.
No QS, for QS the code is very complicated, first you have to design menu logic, then menu itself and sub routines.
I have no intentions of putting the QS code here.
Drop me an email with your working on the QS code and I ll try to help you out.
Another approach
It's for those people who don't have knowledge of programming.
Pls switch to TOSHIBA ICS.
pls download the datasheets of following ICs
1) TC9150- Remote control decoder & controller.
2) TC9148- Remote transmitter IC.
3) TC9153- Volume controller IC.
The 5.1 can be easily implemented using these ICs.
It's for those people who don't have knowledge of programming.
Pls switch to TOSHIBA ICS.
pls download the datasheets of following ICs
1) TC9150- Remote control decoder & controller.
2) TC9148- Remote transmitter IC.
3) TC9153- Volume controller IC.
The 5.1 can be easily implemented using these ICs.
Couple of weeks back, while sorting out my "trash" I stumbled upon these populated PCBs that I made for this project and I decided to complete this project now.
I opened up the firmware that I wrote for the project and I immediately knew what was wrong with it so fixed it , and upon compiling the LCD, volume controller, I.R started working, though I was still having problem with the relay routine, a friend of mine helped me in that area, but I found that his solution was not very well so this weekend I had time to finish the firmware.
Now the project is working perfectly the volume, relays, and I.R are working perfectly both in the simulation and the actual project.
Will upload the pictures soon.
I am using a 20x2 LCD with it.
For now I am uploading the rar file containing .DSN file and the .cof file.
For those who would like to DIY this volume control/pre-amp project I will try to help them as much as I can. But please no PMs.
I opened up the firmware that I wrote for the project and I immediately knew what was wrong with it so fixed it , and upon compiling the LCD, volume controller, I.R started working, though I was still having problem with the relay routine, a friend of mine helped me in that area, but I found that his solution was not very well so this weekend I had time to finish the firmware.
Now the project is working perfectly the volume, relays, and I.R are working perfectly both in the simulation and the actual project.
Will upload the pictures soon.
I am using a 20x2 LCD with it.
For now I am uploading the rar file containing .DSN file and the .cof file.
For those who would like to DIY this volume control/pre-amp project I will try to help them as much as I can. But please no PMs.
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Dear Abid,
i think most of us on the forum think that the stuff you have attached is a crap, we all have come to know your talent, we just want hex file, your final schematics & PCBs if possible, now if you reply with such useless things, i am planning to visit my friend in delhi who works on PICs & don't worry i will post each & every detail required for any enthusiast to build his or her project & enjoy.
After finding you on the forum i thought my project 2 to 5.1 will be completed easily but you are also playing with us.
i think most of us on the forum think that the stuff you have attached is a crap, we all have come to know your talent, we just want hex file, your final schematics & PCBs if possible, now if you reply with such useless things, i am planning to visit my friend in delhi who works on PICs & don't worry i will post each & every detail required for any enthusiast to build his or her project & enjoy.
After finding you on the forum i thought my project 2 to 5.1 will be completed easily but you are also playing with us.
I had made a quick and dirty preamp recently it had rotary encoder interfacing and some TWI ( i2c ) routines.
http://www.diyaudio.com/forums/chip-amps/150025-lm4780-paralell-pcb-3.html
video of operation :
YouTube - Preamp 009.wmv
This was a all in one board which would fit on the front panel of the amp... but seeing this project feel like designing another one with more features 😛
http://www.diyaudio.com/forums/chip-amps/150025-lm4780-paralell-pcb-3.html
video of operation :
YouTube - Preamp 009.wmv
This was a all in one board which would fit on the front panel of the amp... but seeing this project feel like designing another one with more features 😛
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Well as for your comments, first I dont see any opinion polls as to a comparison between this project of mine and yours, please enlighten me with your talent provided if you could?. Please guide me to the poll where you made such startling revelations as to proving your project's superiority?
Besides I am not doing this project for you exclusively, intended to complete your three years old wet dream of completing a 2 to 5 channel conversion, please grow up learn some programming and then you will might compare your talents with mine.
If you had any knowledge of electronics you would not be having difficulty in understanding that a .DSN file is a proteus simulation file and the attached .cof file is generated along the hex file, if the cof file is working, the simulation is working then the project itself is bound to work.
And please dont crap the thread with your childish comments.
Dear Abid you took my comments the other way, i had already revealed earlier that i can't program as during my engg days i always used to just get off the uP classes. I tried to learn programming pic but couldn't spare time from my 24x7 telecom job & family.
I told your attachment as crap for we type of people, sorry if you are hurt.
I can make hardware,make the hardware work if tweakings required i can also do it but for programming i will have to depend upon you type of people.But your comments ignited me to learn PIC so that i can post a project of your interest in future.
Thanks.
I told your attachment as crap for we type of people, sorry if you are hurt.
I can make hardware,make the hardware work if tweakings required i can also do it but for programming i will have to depend upon you type of people.But your comments ignited me to learn PIC so that i can post a project of your interest in future.
Thanks.
Very nice work sasmit, I must say.
PCB looks good.
Here are the final layouts and the working hex files which is in v1.3 so far.
LCD is on PORT A, PORT B is used for buttons, IR, and Rotary encoder.
While PORT C is used for PGA and input selector relays.
Right now its a stereo version, but knowing the fact that PGA in daisy chaining acts as one big shift register, therefore, expanding to modular approach from here is just connecting another daughter board.
Dear Bitravi,
no one on this forum owes you anything. Why do you think being rude to people will help motivate them to help you?
no one on this forum owes you anything. Why do you think being rude to people will help motivate them to help you?
Abid
I'm in the process of designing a PGA2311 based pre-amp - don't worry I don't need code 🙂
I'm using a picaxe 28X2 as the controller - really easy to program and no special programming hardware needed.
One question on your circuit though. In your early schematics you have an op-amp buffer on both the input and output of the PGA, whereas on the latest schematic it only shows on the output. My reading of the PGA datasheet is that it drives 600ohms OK so doesn't need an output buffer, but they recommend sources should be 600ohm capable which implies a buffer on the input.
Please can you explain your thinking on this.
Also a question for anyone, I'm using a 6-0-6 transformer and standard LM317/LM337 to create a stabilised analogue supply for the PGA. Is it really necessary to have a completely separate supply (another transformer?) for the digital 5V given that the digital and analogue grounds have to be tied together in one place anyway? What would be the downside of starring both the ground and +5V at the supply input and then using the same source for the digital and analogue as long as I could ensure any digital noise didn't propagate onto the analogue feed?
Best regards
Peter
I'm in the process of designing a PGA2311 based pre-amp - don't worry I don't need code 🙂
I'm using a picaxe 28X2 as the controller - really easy to program and no special programming hardware needed.
One question on your circuit though. In your early schematics you have an op-amp buffer on both the input and output of the PGA, whereas on the latest schematic it only shows on the output. My reading of the PGA datasheet is that it drives 600ohms OK so doesn't need an output buffer, but they recommend sources should be 600ohm capable which implies a buffer on the input.
Please can you explain your thinking on this.
Also a question for anyone, I'm using a 6-0-6 transformer and standard LM317/LM337 to create a stabilised analogue supply for the PGA. Is it really necessary to have a completely separate supply (another transformer?) for the digital 5V given that the digital and analogue grounds have to be tied together in one place anyway? What would be the downside of starring both the ground and +5V at the supply input and then using the same source for the digital and analogue as long as I could ensure any digital noise didn't propagate onto the analogue feed?
Best regards
Peter
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