I purchased the main mp3 board. Attach 9v adapter. Power the hardware using the CPU power supply. Connect the serial cable. Install the Image File: ...
... This page has information on how to connect Hyperterm and other com programs to speak to the mp3 board. (It also explains how to update your firmware ) ...
For the hardware setup: Connect the main mp3 board via serial cable to back of p4 computer connect the 1.2gig IDE harddrive to main board. connect hard drive...
Hyperterminal would show you that your board is communicating with the serial port. There is a page on the PJRC site that shows you how to set everything for...
Wedgy, Thanks for taking the time to reply, Right now, All I want to do is to get the mp3 to download music from my computer via the serial cable and listen to...
You can't download the songs (MP3's) to the player through the Serial port. The serial port is for {Programing (Firmware update), Troubleshooting and ...
... How many amps does your DC power adapter output? I use one that says it outputs 800ma @ 15VDC. Is the harddrive a desktop (3.5") or laptop (2.5")? Your...
I've been working the last couple days on getting my player hooked into my car (hopefully with pictures soon!) and I've run into a problem. When I hook up the...
As far as the formatting you could add the drive as a slave to a pc with Windows 98 and format from within windows after you have set up you partition in fdisk...
Hai there, This is reg USB usbn9604. Firmware code is written and while debugging it was found that enumeration process is done successfully.the pc recognises...
I tested the LCD hooked straight to a serial port, and it works fine. On the player, it appears the contrast is too high - if I turn it all the way down and...
When you have it hooked to the serial port what is powering the LCD? If its not the player then I would check the power at the button board and see if you are...
With serial, I power it off USB, which gives 4.85 coming into the button board. when hooked up to the player, I have: 5.02 on the button board On C21, I get...
It sounds like its getting too much voltage but 5.02 Volts isn't too much. Im still looking into it. Below is a link where I'm compiling a Troubleshooting...
One thing I noticed - your measurements are with no serial communication running. When I measured, the player was sending info to the screen on the serial...
I have updated that page to include more content. Including a schematic of the contrast contol and voltage readings at different test points as far as stopping...
I have three PJRC mp3 players in perfect/unused condition each with a 4mb simm that i would like to sell. make me an offer. definitely willing to negotiate. i...
the player was fine at first, i could see paul monitor from hyper terminal but i accidently shorted J4 (the jack next to the input power supply) from pins 1...
Well theres a 98% chance you blew the big Xilinx chip. Ever so carefully pull the chip out and then hook up to hyperterminal with the chip out. If you get back...
Hey thanks techknowman! i removed the xilinx chip and pual monitor came back. Does pjrc sell the xilinx chip preprogrammed! i'm not comfortable flashing a bios...
... Hey Rudy, I am not an EE person but I think the zilinx is 'protgramed' on startup. I had to replace my chip and the player started right up. Flashing the...
It doesn't have to be programmed by PJRC. The player automatically configures it at start up. Yes PJRC does sell them. But you can get them anywhere. ... From:...
Hi, I'm still troubleshooting my LCD problem, and was wondering if anyone knows about how much current the LCD/button board draws. I'm going to try bring the...
Sorry for the delay. I should have that information soon on a site i'm working on. I was wondering if you would like to try a PC board swap? I have another PC...
... approx 80 ma. ... DO NOT use only a resistor. Use a 3 terminal regulator, like the 7805. Be sure to attach it to a small heatsink if your input is over...
Couple of days ago the Xlinx chip on my mp3 player blow. My mp3 player was connected to the power of my car. I think the same ignition remote wire that ...
I'm surprised that the chip blew doing that! The power supply on the rev C board is so well buffered. It's hard to imagin it doing that unless there is some...
Know that you mention the gounding issue. I do have an LED that I think is in series with the power switch so that when power is on it lights up, and when the ...
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