yampp-3

yampp-3 is the continued development of yampp-2, and is using the new decoderchip VS1001 from the Finnish company VLSI. This chip is a complete MP3 decoder, including a DA-converter and headphone amplifier. At about US$10-$20 It is also much cheaper than the MAS/DAC combination.

The basic functionality of the yampp-3 is the same as for yampp-2. So to get a technical description of the player and the block schematice below, see the yampp-2 description.

Block schematic for yampp-3. Click image for larger version.

I've gotten the first PCB's for yampp-3, got them populated and they are now up and running. I've had one on my desk at the office for the last few days, and it performed perfectly.
At the picture here, you can see how small it is.
The PCB is the same size as a 2 1/2" drive, and mounted on the drive like in the pictures, it measures only 105*70*30 mm.

A complete yampp-3 system powered by 4 AA Ni-Cad cells.
I use a Panasonic remote to control it.

The code for song selection is still rather low-tech. The player just plays songs from the disk sequentially, or in random mode.
When playing, the display scrolls the current artist/song in the top line and shows song progress, time and volume in the bottom line. With the keys, the remote or the serial link, you can step forward and back 1 or 10 songs, adjust volume and modes e.t.c.

Features:

• ATA/IDE interface for a standard harddisk. A CD-ROM can also be connected, but this is not supported by the current software.
• Headphone output. Can also be used as Line Out.
• RS-232 interface (optional) for communicating with a PC. Full player control and status information available.
• IR receiver for player control by (almost) any remote.
• LCD display connector for a "standard" LCD. Default is 2*16, but SW can easily be modified for larger sizes.
• Up to 8 pushbuttons for player control can be added. Connects via LCD connector.

The player can be controlled by IR, keys or the RS-232 interface. All offers the same functionality, so any two can be left out.

The player needs a single 5 V input. Power consumption is about 400 mA with the LCD backlight on. About 350 mA without backlight.

An MP3 mouse ? No, just a picture to show the size of yampp-3.

Slightly different angle, shows the disk/player mounting.

You can order the PCB, kits or assembled boards for this project at the yampp Web Shop.

The yampp-3 schematic. (click to see larger image)

Partslist for the yampp-3 player : Part Value Package ------- ------- ------- R1,R8,R12 10k M0805 R2,R4 1k M0805 R3 47 M0805 R5 5k 21Z trim pot R6 1M M0805 R7 240k M0805 R9 4k7 M0805 R10,R11 15 M0805 C1,C2 22pF C0805 C3 33pF C0805 C4 10pF C0805 C5-C7 10u/16V CT6032 C9,C10 100u/6V CT7343 C11-C17 100nF C0805 L1,L2 10uH L1210 D1,D2 EL17-21 LED0805 IC1 AT90S8515J PLCC-44 IC2 74HC573 SO20-3 IC3 62256 SO28-3 IC4 MAX202CSE SO16 IC5 LP2980-3.3 M5 IC6 74LVC245 SO20-3 IC7 VS1001G SOIC-28 IC8 74HC08 SO14 Q1 7.3728 MHz HC49U-V Q2 24.576 MHz HC49U-V J1 PROG 5*2 0.1" header J2 DISPLAY 8*2 0.1" header J3 RS-232 3*1 0.1" header J4 IR 3*1 0.1" header J5 POWER 2*1 0.1" header J6 Headphones 3.5mm jack J7 IDE CONNECTOR 44*2 2mm angled header S1 RESET ALPS_45

Here's an overview of the connections to yampp-3. I mounted the IR receiver directly on the board for testing. I'm using an Everlight ELIRM-8601 IR receiver, but you should be able to find others that work such as SFH-560 (I think it's called). Just make sure you connect the pins right.

Overview of connections. (click to see larger image)

Here's the keyboard connection schematic. (click to see larger image)

This schematic shows how an external keyboard can be connected. For simplicity, only 4 keys are shown, but 4 more keys can be connected to AD4..AD7. Due to the way the software handles these keys, there will NOT be a conflict with the databus, except for the situation where more that one key is pressed at a time.

Disk Testing

The yampp-3 has been tested with the following disks :

Disk name	Status
Conner CFA-850A 850MB	OK
Fujitsu MHK2048AT 4.8GB (2.5")	OK
Fujitsu MHN2200AT 20GB (2.5")	OK
Fujitsu MPA3043AT 4GB	FAIL
Fujitsu MPB3021AT	OK
Hitachi DK2262-32U 3.2? Gb	OK
Hitachi DK237A-32 3,2 Gb	OK
Hitachi DK23CA-10 10 Gb	OK
Hitachi DK238A 4,3 Gb	OK
IBM DADA-24860 Travelstar 4.8GB (2.5")	OK
IBM DARA-206000 Travelstar 6.0GB (2.5")	OK
IBM DBCA-204860 Travelstar 4.8Gb (2.5")	OK
IBM DJSA-205 Travelstar 5Gb (2.5")	OK
IBM DJSA-210 Travelstar 10Gb (2.5")	OK
IBM DKLA-24320 Travelstar 4.2GB (2.5")	OK
IBM DTTA-351680	OK
IBM DVAA-2810 810MB	OK
IBM IC25N020ATDA04 20GB (2.5")	OK
IBM IC25N030ATCS04 20GB (2.5")	OK
Maxtor 83201A6	OK
Quantum Fireball 1GB	FAIL
Quantum Fireball ST21A011 2.2GB	OK
Seagate Medalist ST32132A 2.1GB	OK
Seagate ST33210A	OK
Seagate ST91350 1.3gig	OK
Seagate ST92130AG (2.5")	FAIL
Seagate ST9816 816mb	OK
Toshiba MK1017GAP 10GB (2.5")	OK
Toshiba MK1403MAV (HDD2714) 1.4GB	OK
Toshiba MK1608MAT 1.6GB (2.5")	OK
Toshiba MK1926FCV 810MB	OK
Toshiba MK2016GAP 20GB (2.5")	OK
Toshiba MK2103GAP 2.16GB (2.5")	OK
Toshiba MK6412MAT	OK

If you can add to these results, please send me a mail with the information. The more info, the better.

Assembly instructions

These are now available in a number of languages, thanks to dedicated users from all over the world.
Select your favourite below :

	English			German
	Czech			Polish
	Italian			Russian
	Dutch

View schematics (GIF)

Download EAGLE data files (schematic, layout)

Download sourcecode for yampp-3

You can order the PCB, kits or assembled boards for this project at the yampp Web Shop.

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