Velleman K8095 User manual

K8095
ILLUSTRATED ASSEMBLY MANUAL H8095IP-1
Total solder points: 230
Difficulty level: beginner 1 2 3 4 5 advanced
Create yourownhome audio system,
juxe box,jingle player,sound effects,...
MP3 PLAYER KIT
Break off.
PCB for
vertical mount
*In the picture is shown:
- Optional LCD type PC1602W RS-KWA-E
- Some horizontal type push buttons type PS-04PV
- RF receiver modules type RX433N
- SD card (not included)
*
*
*
*

2
Features
 SD card operation
 high-quality VLSI decoder
 5 Preset folder access buttons
 play-pause, next, previous, search
 volume control
 random and shuffle
 8 different preset sound modes
 6 play modes: All, Folder, At power-on...
 infrared receiver
 on-board power amplifier
 RCA pre out
 headphone and speaker outputs
 mono operation is possible
 vertical or horizontal SD position possible
 suits commercially available LCD types
Features & Specifications
Specifications
 suitable for SD and SDHC cards
 tested up to 32GB cards
 supports ID3 TAG information: Title, Artist Name, Album
Name and Year are displayed on the (optional) 2-line 16 char.
LCD
 supports folders to one level deep
 up to 1024 folders, each containing up to 16384 songs
 equalizer settings: Flat , Loudness, Heavy, Clear, Soft, Disco,
Live and Hall
 decodes MP3 (MPEG 1.0 & 2.0 audio layer III (CBR, VBR,
ABR), till 320kbit/s. Fraunhofer IIS and Thomson licensed
 amplifier: 2x 5Wrms @ 4ohm
 power supply: 12Vdc/1A
Optional:

LCD: PC1602WRS-KWA-E
 RF receiver module: RX433N
 power adaptor: PS1210
 RF remotes: for EU and US
 8-channel RF remote transmitter: VM118R (assembled) / K8058 (Kit-version)
 RF remotes: only for EU:
 4-channel desktop transmitter: VM160DT
 4-channel transmitter: VM160T
 IR remotes: 15-channel IR transmitter: K8049 (Kit-version)

3
Assembly hints
1. Assembly (Skipping this can lead to troubles ! )
Ok, so we have your attention. These hints will help you to make this project successful. Read them carefully.
1.1 Make sure you have the right tools:
• A good quality soldering iron (25-40W) with a small tip.
• Wipe it often on a wet sponge or cloth, to keep it clean; then apply solder to the tip, to give it a wet look. This is called ‘thinning’ and will
protect the tip, and enables you to make good connections. When solder rolls off the tip, it needs cleaning.
• Thin raisin-core solder. Do not use any flux or grease.
• A diagonal cutter to trim excess wires. To avoid injury when cutting excess leads, hold the lead so they
cannot fly towards the eyes.
• Needle nose pliers, for bending leads, or to hold components in place.
• Small blade and Phillips screwdrivers. A basic range is fine.
For some projects, a basic multi-meter is required, or might be handy
1.2 Assembly Hints :
⇒Make sure the skill level matches your experience, to avoid disappointments.
⇒Follow the instructions carefully. Read and understand the entire step before you perform each operation.
⇒Perform the assembly in the correct order as stated in this manual
⇒Position all parts on the PCB (Printed Circuit Board) as shown on the drawings.
⇒Values on the circuit diagram are subject to changes.
⇒Values in this assembly guide are correct*
⇒Use the check-boxes to mark your progress.
⇒Please read the included information on safety and customer service
* Typographical inaccuracies excluded. Always look for possible last minute manual updates, indicated as ‘NOTE’ on a separate leaflet.
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1.3 Soldering Hints :
1- Mount the component against the PCB surface and carefully solder the leads
2- Make sure the solder joints are cone-shaped and shiny
3- Trim excess leads as close as possible to the solder joint
REMOVE THEM FROM THE TAPE ONE AT A TIME !
Assembly hints
DO NOT BLINDLY FOLLOW THE ORDER OF THE
COMPONENTS ONTO THE TAPE. ALWAYS CHECK
THEIR VALUE ON THE PARTS LIST!

5
Important
Thanks a lot for buying this MP3 player project.
For your convenience, the MP3 decoder circuit is pre assembled on a plug-in board. This kit allows you to create
a full customized MP3 player, build completely to you wishes.
Standard only infrared receiver is included to work with our K8049 but an optional RF receiver can be mounted,
for use with our transmitters VM118R - K8058 or remotes VM160T or VM160DT (DeskTop version).
The board can be used vertically or horizontally. For vertical mount , a sub board for the SD card holder is
provided. There can be mounted several types of buttons (standard all small vertical types), optionally
horizontal types can be used, or types with a longer actuator. The optional LCD uses a standard 4 bit nibble
mode, so most 2 line 16 character LCD modules can be used.
Download the user manual on our web site (check the K8095 product page)
IMPORTANT!
CAUTION:
This preassembled board contains an expensive MP3 decoder chip.
This board has been fully tested before shipping.
Treat this board with caution and mind static electricity.
Always touch an earthed metal part before handling this board.
This board contains the connector for an optional LCD, the connector must be
broken off.
The board has a V-cut slot; carefully break off this part from the MP3 decoder
board along the slot.

6
 D1 : BAT85
 D2 : 1N5400
2. Diode. Watch the polarity!
D...
CATHODE
 IC1 : 8p
 IC3 : 28p
3. IC socket. Watch the
position of the notch!
 RV1 : 10K
Contrast
4. Trim potentiometer
 LD1 : 3mm red
 LD2 : 3mm red
 LD3 : 3mm red
 LD4 : 3mm red*
* LD4 is not mounted if an optional
LCD is used with backlight
5. LED. Watch the polarity!
Construction
 J6 : MP3 decoder board
 J10 : LCD unit board
6. Board-edge connector
1
 R1 ... R8 : 47 (4 - 7 - 0 - B)
 R9 ... R12 : 100 (1 - 0 - 1 - B)
 R13, R14 : 180 (1 - 8 - 1 - B)
 R15 : 220
(2 - 2 - 1 - B)
 R16 : 560
(5 - 6 - 1 - B)
 R17 : 680
(6 - 8 - 0 - 0 - 1)
 R18 ... R24 : 1K (1 - 0 - 2 - B)
 R25, R26 : 1K1 (1 - 1 - 0 - 1 - 1)
 R27 : 2K4 (2 - 4 - 0 - 1 - 1)
 R28 ... R34 : 10K (1 - 0 - 3 - B)
 R35 : 100K
(1 - 0 - 4 - B)
1. Horizontal resistors
R...
1
7. Push buttons
 SW1 Play/pause  SW8 A
 SW2 Previous  SW9 B
 SW3 Next  SW10 C
 SW4 Up  SW11 D
 SW5 Down  SW12 E
 SW6 Select  SW13 remote
 SW7 random
D2 not on tape! Optional for SW1 ... SW7

7
construction
 SK1 :2p (mono/stereo)
mounted = mono output
 J8 :5p (LCD)
Mount a shunt if no LCD
will be mounted.
11. Pin header
 T1: BC337
10. Transistors
 J5 (power supply)
14. Connector
 IRX1 :BRM-1040
12. IR-demodulator
1
3
2
1 2 3
 X1 : 12.000MHz
13. Crystal
 C1…C4 :10pF (10)
 C5, C6 :22pF (22)
 C7, C8 :10nF (103)
 C9...C16 :100nF (104)
 C17, C18 :220nF (224)
8. Capacitors.
 J2
9. Male PCB connector
1
!
No
LCD
or

8
Construction
 IC2 : TDA1517
18. Stereo amplifier
 C21 ... C23 : 1000µF
C...
19. Electrolytic Capacitor.
Watch the polarity !
 IC1 :VK8095 - IC1
“RF-decoder”
(programmed PIC12F629)
 IC3 : VK8095 - IC3
“CPU” (programmed
PIC18F26J11-ISP)
21. IC. Watch the
position of the notch!
 VR1 :UA7805
 VR2 : LM317
20. Voltage regulator
Make sure the metal back
of both voltage regulators
do not touch each other.
 C19 : 10µF
 C20 : 100µF
C...
15. Electrolytic Capacitor.
Watch the polarity !
 J3 : 3.5mm
(Headphones)
16. stereo phone jack
 J4 : Line out
17. RCA connector
Watch the
position of the
notch!

9
construction
The Sd-card holder can be mounted vertically and horizontally.
Horizontal posittion:
Mount the card-holder ont the solderside of the main pcb (fig. 1)
Vertical posittion:
1. Remove the alternative PCB, to be used for the vertical mounting of the SD card
holder, from the main PCB (fig. 2).
2. Turn over the alternative PCB allowing you to mount the SD card holder (fig. 3).
3. Insert a pin into each connection and bend each one of those pins (fig. 4).
4. Mount the assembly onto the main PCB and solder the connections (fig. 5).
22. SD-card holder
1
5
2
BREAK OFF
4
10X
3

10
The mounting procedure for the
RF-receiver and LCD-display
can be found on our website:
www.velleman.eu
23. MP3 unit
Pay attention to the mounting
order of the MP3 unit !
!
Insert the pre-assembled and
tested MP3 decoder.
Construction
24. Rubber feets
Mount the rubber feet on the
solder side of the PCB.
25. Optional
RF-receiver:
For RF remote use, mount an
RX433 module. See picture on
the box.
LCD-display:
If an LCD is used, mount the
optional PCI602WRS-KWA-E
LCD. Use the edge board to
connect the LCD.
See picture on the box.

11
Connection
26. Connection
Connect a pair of speakers to the speaker connector.
Use 4 – 8 ohms speakers (L+ and R+) and connect the common (-) to the centre tab.
If you use multiple speakers for multi-room use, it is advised to use the unit with MONO output.
To do this, add a shunt over the MONO pin header.
You can connect an optional power amplifier to this output.
You can connect a headphone to this output.
 NOTE: The volume of all the outputs is controlled by the player master volume.
 Hint: If multiple speakers are used you can connect speakers in series + parallel.
Example:
 Use 4 x 8-ohm speakers.
 Connect 2 speaker sets in series (8 + 8 =16 ohms).
 Then connect this set in parallel (16/2) = 8 ohms.
 Now these 4 speakers can be connected to the L or R output.
Speakers
RCA out
Headphone out

12
Insert a suitable SD card containing MP3 files.
The MP3 files can be in the root of the SD card or in 1 folder deep.
If the standard board connector is used, insert the card with the connections facing upwards.
Connect a suitable power supply to the 12VDC input (pin= +).
Make sure the supply can deliver 1A or more.
If all is going well, the power LED should light, press the "play" button to start or pause the first song.
If an LCD is connected, the display should light and indicate:
"Hello" with the firmware version, followed by "Velleman MP3 player".
If no SD card is inserted, the display will indicate "No SD card".
SD card
27. Test
Power
Test
Check the user manual for more instructions.
Download the manual from our site:
Enter "K8095" in the search option.
On the product page, go to the download section.

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Schematic diagram "MP3 unit” + “main PCB”
Schematic diagram
MP3 unit

14
PCB
Main PCB
MP3 decoder
Main PCB

15
Schematic diagram
Main

5 410329 421724
Modifications and typographical errors reserved - © Velleman nv. H8095IP'1 - 2010
VELLEMAN NV
Legen Heirweg 33, 9890 Gavere
Belgium - Europe