hi guys how are you doing,i need alittle help and i will appreciate it if someone supported me with information,i just wana make sure of my design,do the...
All, I've been using my mp3 player for a couple of years now and have it installed in a second vehicle. The only problem I have with it is that it takes...
Is simple. Code up a little program to read your HDD's contents and input that into index.txt or something similar. Then just rewrite the firmware to search...
Would processing a text file index be any faster than processing the fat table? The fat table can be looked as a special file on the system. If we could get a...
Dear all, hello to everyone,i am the new member of this yahoo group. i am a student from multimedia university in malaysia. currently i am working on a project...
hi guys ,how are you doing?? i have some problems with the lcd board and any help would be appreciated.. Actually i can't find any Pal code in the lcd board...
HI. I am going to build the PJRC mp3 player. I've browsed the site alot but still there is some confusion. I want to know that whether the microcontrller is...
No program code lives on the harddrive. It is only used for storing the mp3 data files. The program code lives on the board and can be updated via the serial ...
HI. I am confused about some points on the PCB of the PJRC mp3 player "rev C". In the given revC PCB layout on the website, there are some contacts which come...
Hi, I've bought the microcontroller 87C52 from the market. So, its not programmed. I want to know that , I have to program it with pm2_mp3.hex file. So whats...
... pm2_mp3.hex is the boot loader/monitor. Burn that into the 87C52's internal memory, then use the serial port on the board to upload mp3player.hex to the...
If you don’t have a way to flash the 87C52, then you have a problem. You will probably have to by the chip from PJRC or have someone program it for you. Len...
Hi, Thanks alot for helping me in my previous problems about the player. There is another question: I want to etch the PCB myself but when I took a good look...
Hello All, I am new to this group.I have some question related to LCD.I have to display a BMP/JPEG image file on the LCD.The driver is already there.How to go...
You might want to ask this question on the developer group. Im not sure the name of it but it is also a yahoo group and you can find that info on the PJRC ...
... Are you asking about the PJRC LCD display? I do not think the firmware on the LCD offered via PJRC would support writing out a BMP data to display. The...
Hi, I had bought unassembed MP3 kit from the PJRC store. I am encountering the following problem: I am not using LCD screen and SIMM and using 3.5 inch hard...
You would need a complete LCD controller circuit. This would have to translate the ASCII information from the player and format it for the screen. The touch...
hello friends, I am in a fix for I cannont get the LCD JW-002. Can any one help me out with a design of lcd to be used with a general lcd board(simple lcd...
... It definitely does, as the file-scanning part of the boot prints the name of each folder that it enters, and possibly some other stuff. The other problem...
Of course, but it's not that hard to fire up the mp3 player after putting in some new track and going to the setup menu and selecting regen index file or...
Team, My 100GB drive is now full so I need to get a larger one. But just out of curiosity what is the factor with the PJRC board that limits it to 128GB? Has...
... out of ... 128GB? ... According to the FAQ (http://www.pjrc.com/tech/mp3/faq.html) the limit is due to the 28bit LBA limit. I am still kicking it on a...
OK, I did some reading up on Logical Block Addressing (LBA) but I still don't see why there is a 128GB limitation. What I read made no such reference to size...
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