Velleman K8046 Illustrated Assembly Manual

Total solder points: 274 Difficulty level: beginner 1  2  3 4  5  advanced

TOUCH SCREEN

K8046

ILLUSTRATED ASSEMBLY MANUAL H8046IP-2

This kit is supplied with a GLASS type keyboard.

BE VERY GENTLE WITH THIS TYPE OF

KEYBOARD, THE SLIGHTEST BENDING WILL BREAK THE GLASS AND COULD CAUSE

CAUTION:

INJURY.

A BROKEN KEYBOARD IS NOT COVERED BY THE

WARRANTY, A NEW KEYBOARD CAN BE ORDERED AT YOUR DEALER.

ORDER CODE: KB020501

IMPORTANT: Since this is a complex assembly with a lot of possibilities, it is advisable to

read through the complete instructions BEFORE starting the actual assembly.

BE WARNED !

Features & Specifications

Specifications:

 LED status indication for each key/output  Each key can be defined as toggle or momentary  Soft touch, see-through touch panel with 8 keys  Backlight with dim function  Unique key-click feedback  4 different functions (jumper selectable) :

• Eight independent keys (toggle or momentary selectable)

• Eight radio (rotary simulation) buttons

• Four radio buttons and 4 independent keys

Features:

 8 open collector switches: max 50 Volt / 50mA (all outputs)

• One key serves as a memory for 7 other keys or “clear all” key fitted.

 Board to wire connectors: 20cm wire.  Dimensions (including frame): 165x90x35 (depth)  Usable temperature range: -5°C to +40°C  Keyboard operating force: 40g. (with R0.8mm test point)  Keyboard lifetime: 1.000.000 operations with R3mm rubber  Power supply: 2 x 9VAC or 12VDC / 250mA max.

Options :

 Optional infrared receiver module: IR38DM  Optional BLUE BACKLIGHT: L-934MBC (8pcs required)

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.

Assembly hints

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 !

AXIAL COMPONENTS ARE TAPED IN THE COR-

RECT MOUNTING SEQUENCE !

A. ASSEMBLY OF THE MAIN PCB P8046B

Construction

1. Diodes. Watch the polarity !

CATHODE

D...

 D9 : 1N4148  D10 : 1N4007  D11 : 1N4007

 D1 to D8 are not mounted at

this time.

2. Zenerdiodes. Watch the polarity !

 ZD1 : 5V6 - 1/2W  ZD2 : 5V6 - 1/2W  ZD3 : 5V6 - 1/2W  ZD4 : 5V6 - 1/2W  ZD5 : 5V6 - 1/2W  ZD6 : 5V6 - 1/2W

ZD...

CATHODE

3. Resistors

 R1 : 680E (6 - 8 - 1 - B)  R2 : 680E (6 - 8 - 1 - B)  R3 : 680E (6 - 8 - 1 - B)  R4 : 680E (6 - 8 - 1 - B)  R5 : 680E (6 - 8 - 1 - B)  R6 : 680E (6 - 8 - 1 - B)  R7 : 680E (6 - 8 - 1 - B)  R8 : 680E (6 - 8 - 1 - B)  R9 : 10K (1 - 0 - 3 - B)  R10 : 10K (1 - 0 - 3 - B)  R11 : 10K (1 - 0 - 3 - B)  R12 : 1K5 (1 - 5 - 2 - B)  R13 : 10K (1 - 0 - 3 - B)  R14 : 1K5 (1 - 5 - 2 - B)

R...

 R15 : 100K (1 - 0 - 4 - B)  R16 : 100K (1 - 0 - 4 - B)  R17 : 100K (1 - 0 - 4 - B)  R18 : 100K (1 - 0 - 4 - B)  R19 : 120E (1 - 2 - 1 - B)  R20 : 1K5 (1 - 5 - 2 -

4. IC sockets. Watch the position of the notch !

 IC1 : 28p

 IC2 : 18p

Construction

5. Capacitors.

C...

 C1 : 22pF (22)  C2 : 22pF (22)  C3 : 100nF (104)  C4 : 100nF (104  C5 : 100nF (104)

6. Push buttons

 SW1 : RESET

SW2 : BACKLIGHT



Type : KRS1273

7. Voltage regulator

M2,5 6mm SPACER

M2.5 SPACER

VOLTAGE REGULATOR

M2,5 BOLT

 VR1 : UA7805

8. Connectors

 SK3 : 3p  SK5 : 10p

CUT BETWEEN

PIN 10 & 11

 SK8 : 10p

9. Membrane keyboard connector

 SK4 : 6p

WATCH THE POSITION OF THE

CONNECTION

ZD6

ZD5

ZD4

R18 R17

ZD3

R16 R15

ZD1

ZD2

Construction

PIN 1

10. Transistors

 T1 : BC557B  T2 : BC547B

11. LED. Watch the polarity!

27mm

LD1

CATHODE

Power indication, make your choice as you prefer:

 LD17 : 3mm green clear

3mm red

12. Quartz crystal

 X1 : 4MHz

X...

15. IC's. Watch the position

of the notch!

13. Electrolytic Capacitors. Watch the polarity !

 C6 : 10µF  C7 : 100µF

 IC1 : VK8046

C...

 IC2 : ULN2803

16. Pin headers

Programmed PIC16C55A-04 ! or eq.

 SK1 : 2p

14. Relay

 SK2 : 2p

 RY1 : VR15M121C

RY...

SK2

SK1

Keyboard set-up

17. KEYBOARD SET-UP

Each key is function definable (moment or toggle) and backlit. It is even possible to simulate old fashioned “radio buttons” (only one output can be ON, just like a rotary switch). One key can be defined as a pre-set memory or serve as “all clear”.

The K8046 features 4 operating modes, selectable with shunt SK1 or SK2 :

1. Eight independent keys (toggle or momentary selectable).

2. Eight radio (Rotary simulation) buttons.

3. Four radio buttons and 4 independent keys.

4. One key is reserved as memory or “clear all” function.

Momentary (push button-) function : Hold the key to activate the output and release the key to deactivate it.

Toggle function : Operates according to the principle of a classic switch, i.e. you have to press the key once

to switch and press again to deactivate it.

SHUNT SELECTION

MODE SK1 SK2

1 OFF OFF

2 OFF ON

3 ON OFF

4 ON ON

For each output :

If a momentary output is needed, DO NOT mount a diode for the corresponding output D1 to D8.

If a toggle output is needed, MOUNT a diode for the corresponding output D1 to D8.

CATHODE

D...

Diode type: 1N4148.

Check the polarity !

JUMPER SELECTION

Different possibilities in conjunction with diode setup:

1. Eight indepent keys (no jumper is mounted) toggle or momentary selectable see previous page.

2. Eight radio ( Rotary simulation) buttons, only one button (output) at a time can be ON. Again with possibility of momentary or toggle.

Normally a toggle function will be used for this type of output.

Keyboard set-up

3. Four radio buttons and 4 independent keys. This is a combination of above. The first row (1 to4). Are independent buttons, the second row (5 to 8) have a rotary simulation.

4. Key 8 is reserved as memory or ‘Clear all’ Function. If D8 is mounted this key will switch between all clear and memory of the previous keyboard setting. If D8 is NOT mounted, this key will serve as all clear.

HINT: the separate CLEAR button can also be used as keyboard clear function.

This key will actually reset the processor.

IR detector

18. Optional IR detector

It is possible to use the keyboard together with a remote control (e.g. our K8049 & K8051). In this case an optional receiver module type IR38DM is available.

A special cut-out in the front panel has to be made, see figure 1.0.

Fig 1.0

IR detector

Position the module like in the drawing. Use some hot glue to hold the receiver in place on the relay (Fig 2.0)

Make the connections:

Connect 1 with right side of R13 Connect 2 with COM connection of the output connector Connect 3 with left connection of R20. See picture.

Fig 2.0

B. ASSEMBLY OF BACKLIGHT PCB P8046L

1. Resistors

 R21 : 180E (1 - 8 - 1 - B)  R22 : 180E (1 - 8 - 1 - B)  R23 : 180E (1 - 8 - 1 - B)  R24 : 180E (1 - 8 - 1 - B)  R25 : 180E (1 - 8 - 1 - B)  R26 : 180E (1 - 8 - 1 - B)  R27 : 180E (1 - 8 - 1 - B)  R28 : 180E (1 - 8 - 1 - B)

R...

2. Spacers for keyboard support

 Mount six 8mm M2,5 spacers at the indicated

positions using six 6mm M2,5 screws (Fig 3.0).

Construction

Fig 3.0

+ 33 hidden pages

Velleman K8046 Illustrated Assembly Manual

Specifications and Main Features

Frequently Asked Questions

User Manual