Velleman К8091 User Manual

LED CLOCK with SLOW ON DIMMER

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Total solder points: 120
Difficulty level: beginner 1  2  3  4 ⌧ 5  advanced

K8091EU

K8091EU

ILLUSTRATED ASSEMBLY MANUAL H8091IP-1

Features & specifications

The K8091 is an attractive LED clock with connection possibility for a nightlight.
15 minutes before the set time, the light intensity of the connected light will
increase up to full power at set time and beeps will be heard. The beep length is
gradually built up so you will not be startled by a sudden alarm signal.

Features :

 clock with red 7-segment display.
 possibility to connect any lamp armature fitted with an incandescent light bulb
 sleep function (15 min) for slow light power-off.
 snooze function with alarm repeat function after 8 min.
 manually settable light intensity.
 beep and / or light option.

Specifications

• power supply: 220- 240V AC / 50Hz.

• lamp power: 40 ~ 100W max.

• power consumption: < 1W (without lamp)

• dimensions: 92x45x101mm / 3.6x1.8x3.9"

WARNING !

ALL PARTS IN THIS KIT CARRY HAZARDOUS VOLTAGES WHICH CAN KILL !

Do not touch any part of the kit while connected to the AC grid.
Do not modify the kit in any way.
Do not use the kit if the enclosure is damaged or open.

For use with regular incandescent lightbulbs (40-100W) only.

Not suited for low-voltage halogen lighting, energy saving bulbs, led lighting,
fluorescent lighting, motors, buzzers, transformers etc...

We highly recommend to have your kit inspected by a qualified technician
before connecting it to the AC power for the first time or after a malfunction.

3

Assembly hints

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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 draw-

ings.

⇒ Values on the circuit diagram are subject to changes.
⇒ Values in this assembly guide are correct*

4

Assembly hints

⇒ 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.

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

AXIAL COMPONENTS ARE TAPED IN

THE CORRECT MOUNTING SEQUENCE !

REMOVE THEM FROM THE TAPE ONE AT

A TIME

!

5

Construction

CATHODE

ZD...

c...

(1) ASSEMBLY OF THE COMPONENT SIDE

1. Resistors

R...

1/8W:

 R1 : 100 (1 - 0 - 1 - B)
 R2 : 100 (1 - 0 - 1 - B)
 R3 : 100 (1 - 0 - 1 - B)
 R4 : 100 (1 - 0 - 1 - B)
 R5 : 100 (1 - 0 - 1 - B)
 R6 : 100 (1 - 0 - 1 - B)
 R7 : 100 (1 - 0 - 1 - B)

 R13 : 10K (1 - 0 - 3 - B)
 R14 : 10K (1 - 0 - 3 - B)

 R16 : 10 (1 - 0 - 0 - B)

1/2W "metal film" :

 R8 : 47 (4 - 7 - 0 - B - 9)
 R9 : 10 (1 - 0 - 0 - B - 9)
 R10 : 470K (4 - 7 - 4 - B - 9)
 R11 : 470K (4 - 7 - 4 - B - 9)
 R12 : 100K (1 - 0 - 4 - B - 9)

1/4W:

 R15 : 220 (2 - 2 - 1 - B)

3. Zener diode (check the polarity)

 ZD1 : 15V0

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

 IC1 : 18p

1

IC...

Mind the position of the notch and shorten
the connection pins as short as possible
after soldering!

5. Capacitors

 C1 : 100nF (104)
 C2 : 100nF (104)
 C3 : 100nF (104)
 C4 : 10nF (103)
 C5 : 100pF (101)

6. Fuse.

 F1 : 1A

2. Diodes (check the polarity)

CATHODE

D...

 D1 : 1N4148
 D2 : 1N4148
 D3 : 1N4148
 D4 : 1N4148
 D5 : 1N4007

6

7. Buzzer

 BUZ1

(3-6VDC/25mA)

BUZ...

+

Construction

C...

TR...

8. Transistor

 T1 : BC547

9. Voltage regulator

T1

 VR2 : UA78L05

VR...

10. 1W Resistor

 R17 : 220 (2 - 2 - 1 - B)

13. Capacitors

14. Push buttons

 SW1
 SW2
 SW3

15. Triac

 TR1 : BT136

 C6 : 100nF
 C7 : 470nF

11. Electrolytic capacitors.
Watch the polarity !

 C8 : 220µF
 C9 : 10µF

12. Terminal blocks

 SK1 : 2p (AC IN)
 SK2 : 2p (output)

16. IC

 IC1: VK8091EU

Programmed PIC16F627A

7

Construction

(2) MOUNT THESE COMPONENTS ON THE PCB SOLDERSIDE, SOLDER

THEM ON THE COMPONENTS SIDE

1. Four digit display & coil

• Mount the four digit display first.

 DY1 : 4-digit

min.

2mm

• Mounting the coil:

1) Cut the rubber foot and stick it to the PCB as shown.

2) Position the coil onto the rubber foot. Bend the leads carefully and insert

them into their soldering pads. Solder carefully.

!

8

construction

2. Power cable

• Cut 45cm of the included cable, measured from the female connector.

+/- 45cm

• Put both cables trough the hole on the rear cover of the housing.

• Strip the male and female cable.

• Connect the female cable/connector to the output connector

SK2, the male cable/connector to output connector SK1

• When both cables have been connected to the K8091EU

mount the strain relief and tighten up with the included 15mm
bolts and M3 nuts.

20mm

Twist & thin the wires!

SK1 SK2

L N N L

AC OUT

M3 bolt

7mm

Strain relief

SK2

SK1

M3 lock washer

M3 nut

9

Assembly

3. Assembly

• Before mounting the PCB on its place you must mount

the red display.

• After placing the red display mount the

PCB in the front cover with the 4-digit
display facing to the red
display window with 4 screws.

• At last mount the rear of the housing

and closed with 4 screws.

Rear-sticker

Stick the rear sticker on the backside of the housing, see figure.

Product description

Indications :

(a)

(b)

(c)

Control :

10

time set

alarm set

light/buzzer

select mode

Light / Buzzer

sleep / snooze

dim / cancel alarm

time

hour

minutes

alarm/light
activated

run mode

on

off

4. Connection

Connection

lamp power: 40 ~ 100W

power supply: 220- 240V AC / 50Hz.

5. First power-up

At first power-up

Make sure to read and understand the important safety information on p. 3
At first power-up the product number 8091 and version software appear.

Default setting

The default setting is the blinking clock time 0:00 with a default alarm time 07:00
and alarm functions (light+buzzer) deactivated.

Note: From the moment that the alarm time is changed will this time be the
default setting alarm time.

6. Setting time / alarm / alarm functions

Time-setting:

• First press the "select" button to enter the time set mode, the 'time set' indica­tor will blink.

• Press the middle button to set the minutes, the right button for the hours.

• Confirm the setting by pressing the select-button, once confirmed you will

automatic enter the alarm-mode.

11

Setup

Alarm:

Note: If you are not entering this mode after the time setting you must press twice
the 'select' button to enter the alarm mode. The 'alarm set' indicator blinks to
confirm you're in the alarm mode.

• Press the middle button to set the minutes, the right button for the hours.

• Confirm the setting by pressing the select-button, once confirmed you will

automatic enter the alarm function mode.

Alarm functions:

Note: If you are not entering this mode after the alarm setting you must press
three times the 'select' button to enter the alarm mode.
The 'alarm set' indicator blinks to confirm when you're in the alarm mode.

You can choose between 3 possibilities for wake-up alarm

1. Light

2. Buzzer

3. Light & Buzzer

(LI.on or LI.oF)

(bU.on or bU.oF)

:

Note: Press the "select" button to go trough the setup mode and to exit.

SETUP SEQUENCE:

Hour mode Alarm mode

Display

Light mode Buzzer mode

Setup mode

12

Make sure that the switch of your nightlight is activated!

7. Alarm process

light control

SEQUENCE:

* min. 15 minutes

alar m ti me time

*

Light at maximum

Buzzer on

Snooze

Off

8 minutes

Alarm is switched off

Buzzer on

Snooze

Off

. . .

The repeat function of the buzzer will automatically repeat every 8minutes until
the alarm is deactivated by pressing the manual on/off button.
Note: if the light was already illuminated more than 15minutes before the alarm
time, will the alarm-light increase from that point to its maximum.

8. Manual light control

The nightlight can be switched on trough the alarm or manually.
When you want to do it manually you can let it light up or down in gradation or
directly to 100% or directly extinguish the light.

Letting the light growing up or down in gradation by holding the middle button
pressed until the desired level is reached.

With a short press you go directly to the maximum or minimum light intensity.

light at maximum

max.

0

light intensity

short press

light at minimuum

0

max.

long press

light intensity

light at maximum

Note: whit a short press after a dimming function the

light will go directly to it's maximum or minimum, the

direction will be equal to the last dimming direction.

13

PCB

9. PCB

14

10. Schematic diagram

Schematic diagram

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VELLEMAN KIT NV

Legen Heirweg 33

9890 Gavere

Belgium Europe

Info ?: http://www.velleman.be

Modifications and typographical errors reserved
© Velleman Kit nv
H8091IP - 2009

5 410329 409234