Hehe, heck no, only 3.8cm by 5.5cm (measured it  )

It`s a relatively easy to build device, try Yampp on experiment board, that becomes 15 by 10 or something (doing that one right now  )

And i`ve been smart enough to order a 74HCT373 instead of a 74HC573 (number doesnt even matter, only different pinout. Only the T makes a big difference, it makes it a TTL device instead of CMOS)

Hi,

I want to make yampp with the STA013 + CS4334 chip instead of VS1001 anyone has done this before and can help me with firmware, i`ve been told i should place STA013.bin on the harddisk and load it like a normal MP3, but i dont know how

I`m going to use it to connect to a laptop, have built a 4.5A 15V powersupply for it and some nice touch screen for Navigation Purposes

Well, my emulator works perfectly now, thanks to andrethomas who provided me with some 14.7456 crystals

Ahh? then my emulator doesnt work after all  

Brokly, is your emulator more sensitive to timings than the Multi CD emulator? I can get Multi CD emulator to work with 16Mhz(without modification in timings) and 7.3728Mhz(timings modified) But cant get your emulator to work, it just doesnt do anything, nothing on serial comm and nothing on HU

Well got it working a little bit, can receive commands from the HU (with 16Mhz Crystal) sending works too but only a little, by some luck i managed to set track title, do not know how though, i tried to get the Emulator for winamp to work, but that one doesnt do anything, not even serial comms to pc

Wont 8Mhz will be too difficult to adapt timings, 7.3728 Mhz is exactly half the speed so u can divide delays by 2. And even that is difficult to do, my emulator talks to pc now, even detects the HU but the HU wont see the emulator. I`m doing a little debugging and found out it crashes in this part :

u08 read_message(void)
{
#ifdef UART_TX_ASYNC
   cbi(UCSRB, UDRIE);               // disable UDR Empty Interrupt
#endif
   cbi(TIMSK, TOIE1);               // disable timer1 interrupt
   u08 i, Id[3], T = 0, Parity_Message;
   timer0_source(CK8);               //was CK64
   timer0_start();
   while (INPUT_IS_SET)
   {
      T = inp(TCNT0);
      if (T >= 200)                                                             //was 50
      {
         PRINT("timer200exit");                                
         goto err_exit;         // 200us max wait time
      }
   }
   if (T<100)                                                                                 // was 25
   {
      PRINT("timer<100exit");                                             // <------ Crashed here every cycle
      goto err_exit;
   }

I`m getting a litlte further now, i dont get CD ERROR`s anymore, now the emulator gives:
START
CD 01 10
<<<<<<

and the < keep commin, but the HU doesnt see the emulator, do i need to do something before it sees it?


//edit
when i connect voltage meter between ground and BUSM / BUSP i get 0,8V / 2,7V without HU connected, with HU connected both give around 1.5V is that correct?
when i measure the pins on the HU i get 2.5V on both pins

Tried 5 different stores here in Holland, none of them had that crystal only half of the speed so i took that one figuring that it would be relatively easy to convert the code for it..... Not easy for me though 

Hehe found out that they`re pin compatible, couldnt get a MAX202 near here so i went for this one, have update now too, those codes i put here earlier
#0A#20#43#44#20#45#72#72#6F#72#0D they are CD error messages 

So that means the communication to the pc is working now
Can somebody convert the delays to work with a 7.3728 crystal (exactly half the speed of the one intended in the schematic)

Well i connected a 10K from pin1 (reset) to VCC and still dont have any communication between my pc and device, connecting to HU doesnt do anything either can someone help convert the code to 7.3728 Mhz??

/edit

I think your schematic is wrong in a 2nd place, TX from pc needs to be connected to pin13 of MAX232, and not pin14
RX from pc needs to be connected to pin14 of MAX232 instead of pin13

if i do that and put a 10k resistor between VCC and Reset of the AVR then i get a whole bunch of messages like these :
#0A#20#43#44#20#45#72#72#6F#72#0D
they come very fast.

BUT i still dont get any communication with my HU

Hmm something is bothering me, isnt the reset pin supposed to be connected
AtMega8 wont work without reset pin connected i think

I changed the Value in Constants.h and de prescaler in link.c and changed every value that is compared to T into (value * 4) , if i connect the interface to my computer and start up hyperterminal i dont see any communication, did i do something wrong? Do i need special settings in hyperterminal? or which baudrate do i have to use?