Velleman KA01 User manual

Control 3 dimmer channels (1 x RGB or 3 single channels) with
Arduino UNO™.
ILLUSTRATED ASSEMBLY MANUAL HKA01IP’1ILLUSTRATED ASSEMBLY MANUAL
KA01
RGB Shield for
Arduino®
Features
• For use with Arduino DueTM, Arduino UnoTM, Arduino MegaTM
• RGB indicator leds
• Screw terminals for led strip connection.
• With cascade connectors for other shields
• Selectable power supply: external power or power from Arduino UnoTM board
Specifi cations
• Max. current: 2A/channel
• Max. input voltage: 50VDC
• Dimensions: 68 x 53mm / 2.67 x 2.08”

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Legen Heirweg 33
9890 Gavere
(België)

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 fl ux or grease.
• A diagonal cutter to trim excess wires. To avoid injury when cutting excess leads, hold the lead so they cannot
fl y towards the eyes.
• Needle nose pliers, for bending leads, or to hold components in place.
• Small blade and Phillips screwdrivers. A basic range is fi ne.
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, the 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 leafl et.
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
0.000
- 4 -

- 5 -
DO NOT BLINDLY FOLLOW THE ORDER OF THE
COMPONENTS ONTO THE TAPE. ALWAYS CHECK THEIR
VALUE ON THE PARTS LIST!

- 6 -
Construction
R1: 1K (1 - 0 - 2 - B)
R2: 68 (6 - 8 - 0 - B)
R3: 180 (1 - 8 - 1 - B)
R4: 330 (3 - 3 - 1 - B)
R5: 330 (3 - 3 - 1 - B)
R6: 330 (3 - 3 - 1 - B)
Jumper
1
R...
Select power source
Vin: power from Arduino®
OR
PWR: Power from external supply
Resistors
2
Transistors
3
Female header
4
M3 NUT
TRANSISTOR
M3 BOLT
PCB
T1: BUK9535-55
T2: BUK9535-55
T3: BUK9535-55
2 x 6p
2 x 8p
Do not cut the
connector pins!
LED’s
5
Watch the polarity!
LD1: blue (water-clear!)
LD2: Green
LD3: Red
LD1
LD2
LD3
Diode
6
CATHODE
D1: 6A6
Terminal blocks
7
SK4: 2p (power)
SK5: 2p (Red)
SK6: 2p (Green)
SK7: 2p (Blue)
CONSTRUCTION
I
C (-)

- 7 -
Connection diagram
CONNECTION DIAGRAM
II
SELECT POWER SOURCE
2
Vin: Power from Arduino (max. 2A)
PWR: Power from external supply (max. 50VDC/6A)
RGB OUTPUTS
3
Current limit resistor
EXTERNAL POWER
SUPPLY INPUT
1
Max. 50VDC/6A
6= Blue
5= Green
3= Red
DOWNLOAD SAMPLE CODE FROM KA01 PAGE ON
WWW.VELLEMAN.BE

- 8 -
BUK9535
T1
BUK9535
T2
BUK9535
T3
6A 6
D1
PWR
SK1
SK2
Vin
SK3
PWR
SK4
330
R4
330
R5
330
R6
1K
R1
39 0
R2
18 0
R3
BLUE
LD1
GREEN
LD2
RED
LD3
Vin
GND
GND
GREEN
SK6
BLUE
SK5
RED
SK7
GND
GND
GND
GND
1
2
3
4
5
6
SK8
Vin
GND
5V
3V3
RST
1
2
3
4
5
6
SK9
A0
A1
A2
A3
A4
A51
2
3
4
5
6
7
8
SK10
ARDUINO UNO
1
2
3
4
5
6
7
8
SK11
0
1
2
3
4
5
6
7
8
9
10
11
12
13
AREF
GND
3
5
6
GND
Schematic diagram

- 9 -
PCB

Supply voltage (V) - led voltage (V)
required current (A) = series resistance (ohms)
required current (A) = series resistance (ohms)
Required resistor power handling=
voltage over resistor x current passed trough resistor
9V - 1.7V
0.005A = 1460 ohm
9V - (3 x1.7V)
0.005A = 780 ohm
(9V - 1.7V) x 0.005A = 0.036W
closest value :
use a 1k5 resistor
use an
820 ohm resistor
a standard 1/4W resistor
will do the job
Supply voltage (V) - (number of leds x led voltage (V))
How to Calculate the series resistor:
Example: operate a red led (1.7V) on a 9Vdc source.
Required led current for full brightness: 5mA (this can be found in the datasheet of the led)
LEDs in series:
Example: 3 x red led (1.7V) on 9V battery
Required led current for full brightness: 5mA
(this can be found in the datasheet of the led)
Leds feature a specifi c voltage
drop, depending on type and
colour. Check the datasheet for
exact voltage drop and rated
current !
Never connect leds in parallel
Leds and how to use them
An open collector output can be compared to a switch which switches to
ground when operated
Example: How to switch an LED by means of an open collector output
open collector outputs

Diagram

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Modifi cations and typographical errors reserved - © Velleman nv. HKA01’IP
Velleman NV, Legen Heirweg 33 - 9890 Gavere.