Velleman-Kit K8055 User manual

USB Experiment interface board
K8055
ILLUSTRATED ASSEMBLY MANUAL H8055IP-1
Total solder points: 159
Difficulty level: beginner 12345 advanced
Interfaceyourcomputerwiththe
worldusing5digitalin–and8
outputs,2analoguein-andoutputs.

3
Features:
 5 Digital inputs (0= ground, 1= open). On board test buttons provided.
 2 Analog inputs with attenuation and amplification option. Internal test +5V provided.
 8 Digital open collector output switches (max 50V/100mA). On board LED indication.
 2 Analog outputs
 0 to 5V, output resistance 1K5.
 PWM 0 to 100% open collector outputs max 100mA / 40V
 On board LED indication.
 General conversion time: 20mS per command
 Power supply through USB approx. 70mA.
 Diagnostic software and communication DLL included
Features
FR Vous trouverez la traduction de cette notice sur le CD, avec d'autres informations
NL Vertaling van deze handleiding, als ook meer gegevens kan men terugvinden op de CD.
UK The translation of this manual and all other information can be found on the CD.
D Dieübersetzung dieser anleitung und alle anderen Informationen finden Sie auf der CD.
SSvensk Bruksanvisning och annan information finns på medföljande CD.
SF Tämän käyttöohjeen sekä muun informaation suomenkielinen käännös on oheisella CD:llä.
ILa traduzione di questo manuale e tutte le informazioni concernenti l'unità possono essere trovate sul CD.
DK Oversættelsen af denne manual, samt alle øvrige informationer vedrørende enhederne, kan findes på CD'en.
SP La traducción de este manual de instrucciones y toda otra información sobre los dispositivos se encuentran en el CD
PA tradução deste Manual e toda a informação referente às unidades pode ser encontrada no CD

4
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 oftenon a wet sponge or cloth, to keepit clean; then apply solder to the tip, togive it a wet look. This is called ‘thinning’ and will
protect the tip,and enables youto make goodconnections. 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.
0.000

5
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 !
Assembly hints

6
 R1 : 10K (1 - 0 - 3 - B)
 R2 : 10K (1 - 0 - 3 - B)
 R3 : 1K (1 - 0 - 2 - B)
 R4 : 1K (1 - 0 - 2 - B)
 R5 : 10K (1 - 0 - 3 - B)
 R6 : 100K (1 - 0 - 4 - B)
 R7 : 100K (1 - 0 - 4 - B)
 R10 : 10K (1 - 0 - 3 - B)
 R11 : 10K (1 - 0 - 3 - B)
 R12 : 100K (1 - 0 - 4 - B)
 R13 : 100K (1 - 0 - 4 - B)
 R14 : 1K5 (1 - 5 - 2 - B)
 R15 : 1K5 (1 - 5 - 2 - B)
 R16 : 1K5 (1 - 5 - 2 - B)
 R17 : 1K5 (1 - 5 - 2 - B)
 R18 : 1K (1 - 0 - 2 - B)
 R19 : 1K (1 - 0 - 2 - B)
 R20 : 10K (1 - 0 - 3 - B)
 R21 : 10K (1 - 0 - 3 - B)
 R22 : 10K (1 - 0 - 3 - B)
 R23 : 10K (1 - 0 - 3 - B)
3. Resistors
R...
Construction
 D1 : 1N4148
 D2 : 1N4148
2. Diodes, check the polarity !
D...
CATHODE
 J (2x)
1. Jumper  R24 : 10K (1 - 0 - 3 - B)
 R25 : 10K (1 - 0 - 3 - B)
 R26 : 10K (1 - 0 - 3 - B)
 R27 : 1K (1 - 0 - 2 - B)
 R28 : 47K (4 - 7 - 3 - B)
 R29 : 47K (4 - 7 - 3 - B)
 R30 : 47K (4 - 7 - 3 - B)
 R31 : 47K (4 - 7 - 3 - B)
 R32 : 47K (4 - 7 - 3 - B)
 R33 : 47K (4 - 7 - 3 - B)
 R34 : 47K (4 - 7 - 3 - B)
 R35 : 1K5 (1 - 5 - 2 - B)
 R36 : 1K (1 - 0 - 2 - B)
 R37 : 1K (1 - 0 - 2 - B)
 R38 : 1K (1 - 0 - 2 - B)
 R39 : 1K (1 - 0 - 2 - B)
 R40 : 1K (1 - 0 - 2 - B)
 R41 : 1K (1 - 0 - 2 - B)
 R42 : 1K (1 - 0 - 2 - B)
 R43 : 1K (1 - 0 - 2 - B)
 Remark:
R8 & R9 are not mounted at this
time. 4 Resistors should be left
over!

7
Construction

IC1 : 14P

IC2 : 18P

IC3 : 28P

IC4 : 18P
5. IC sockets. Watch the posi-
tion of the notch!
 C1 : 100nF (104, 0.1, u1)
 C2 : 100nF (104, 0.1, u1)
 C3 : 100nF (104, 0.1, u1)
 C4 : 33pF (33)
 C5 : 33pF (33)
 C7 : 100nF (104, 0.1, u1)
4. Ceramic Capacitors
C...
 LD1
 LD2
 LD3
 LD4
 LD5
 LD6 3mm RED
 LD7
 LD8
 LD9
 LD10
 LD11
9. LED’s. Watch the polarity!
LD1
CATHODE
 C6 : 220nF/50V~
8. Capacitors.
C...
 SW1
 SW2
 SW3 KRS0610
 SW4
 SW5
6. Push buttons
SW...
 RV1 : 100K
 RV2 : 100K
7. Potentiometer

8
 SK2 : 2P
 SK3 : 2P
 SK5 : 2P
 SK6 : 2P
14. Header
Construction
 C8 : 4,7µF/50V
12. Electrolytic capacitor.
Watch the polarity !
C...
 T1 : BC337
 T2 : BC337
10. Transistors
 SK7: USBB90
11. USB connector
 X1 : 6MHz
13. Quartz crystal
X...
 SK1 : 3P
15. Screw connectors

9
 SK4 : 2 x 3P
 SK8 : 5 x 3P
 IC1 : TLV274IN
 IC2 : ULN2803
 IC3 : VK8055 (Programmed PIC16C745-IP)
 IC4 : ULN2803
16. IC’s. Watch the position of the notch!
PIN 1
1
Construction

10
The analogue inputs A1 and A2 have a standard range of 0 ~ +5Vdc.
To use them externally, remove the jumper caps on SK2 and SK3.
The internal 5V voltage source can only be used for testing purposes.
When the input voltage is too low you can amplify it x4 / x15.
A gain of x4 requires a resistance of 3K3 for R8 (input signal 1) and for R9 (input signal 2). A x15 gain requires a resis-
tance of 820ohm.
When the gain is set to e.g. x4, the max. input voltage falls inversely proportional to 1,25V.
If you want a different gain factor you can calculate it quite easily using the following formula :
Gain A1 = 1 + (R10/R8) Gain A2 = 1 + (R11/R9)
17. GAIN FACTOR
Gain factor

11
Mount the rubber feet on the solder side of the PCB, see fig 1.0.
18. Rubber feet
Fig. 1.0
Rubber feet

12
2
43
1
75 6
8
9
10
19. Connection / settings
Connection / settings

13
Connection / settings
5 digital inputs (e.g. push button, switch, relay contact, ...). Input is generally "high" (1), connection to GND
makes the input "low" (0)
Analogue inputs (e.g. temperature sensor, potentiometer, ...) 0 ... +5VDC MAX!
If the jumper is mounted, then you can use the internal voltage and adjust it using RV2/RV1. If the jumper is
not mounted you must use the external voltage A2/A1.
Adjusting of the internal voltage for input A1.
Adjusting of the internal voltage for input A2.
Address selection, open = 1, closed = 0
Analogue outputs.
Digital outputs
USB connection to computer
1
2
3
4
5
6
7
8
9
10

14
Select the correct address in the test program
DIGITAL OUTPUTS :
8 open collector contacts, to be connected with suitable inputs.
These exits function as ‘dry contact points’: you need an external voltage to control a component such as a LED or
a relay switch.
See the connection scheme on p.19.
ANALOGUE OUTPUTS :
 2 analogue outputs with an output voltage between 0 and +5V (impedance 1K5).
 2 PWM outputs with a pulse width modulation between 0 and 100%.
A fixed PWM frequency (23.43kHz) is used.
 REMARK: the analogue outputs and PWM outputs are always activated /deactivated together.
Connection / settings

15
• Start “Setup.exe”, this software is located at the folder K8055 from the Velleman Software CD. If the necessary
software is not included or if you want to check for updates, you can always download it for free from our Velle-
man Website www.velleman.be
• An installation wizard will guide you trough the installation procedure.
• By default the software is installed in the folder : ‘C:\Program Files\Velleman\K8055’
Fig 2.0
20. Demo-software installation
Software installation & test

16
Test procedure
The included demo software makes it easy to experiment.
Start by selecting the address : tick off SK5 and/or SK6 (see address selection).
ATTENTION : Execute these settings before connecting the kit with the computer or before booting the computer.
 Connect the USB cable.
 LED LD3 'Power' lights up if the connection has been executed properly.
 After startup LD8 (output 8) will flash momentarily to indicate that the circuit works as it should.
 Start the program 'K8055_Demo.exe'.
! Next press the 'connect' button to connect the K8055 with the computer.
21 Test procedure
SK5 SK6 ADDRESS
ON ON 0
OFF ON 1
ON OFF 2
OFF OFF 3

17
The message "Card x connected" is displayed if the connection is successful, see fig 3.0.
You can now simulate the inputs via push buttons Inp1 through Inp5. The matching check box remains ticked off
as long as you keep one of the push buttons pressed down.
Always tick off the check box for the matching output if you wish to test a digital output.
You can also conduct this procedure automatically : press the 'output test' button or activate all outputs with the
'Set all digital' button. Press the 'output test' button to test all digital outputs automatically.
Test the analogue outputs with the 'set all analog' button and modify the output voltage with DA1 & DA2
FIG 3.0
Test procedure

18
Counter 1 & 2 are hardware integrated 16-bit counters, they are triggered by INP1 & INP2.
You can test the counter with push buttons Inp1 and Inp2 : the counter adds 1every time one of these two buttons
is pressed. The debouncing control allows you to determine the reaction time of the counter (0ms - 2ms - 10ms -
1000ms).
You can use the internal analogue voltage to simulate the analogue input via potentiometers ATT1 (RV1) & ATT2
(RV2).
The scroll bars AD1 & AD2 change on the screen whenever you adjust the position of the potentiometers. The
"digital" value (0 to 255) of this internal analogue voltage can be read directly under the scroll bars.
Test procedure

19
22. CONNECTION SCHEME
Connection scheme
C
VELLEMAN 2003
P8055-1
From PC USB1.X
USB
OR
"1" "0" - +
ANALOG VOLTAGE 0 ...5V RVx : FOR EXPERIMENTAL USE
mount SK2 & SK3 when using RV1,2
To external electronics
analog output 0 ... 5V
-
+
-
+
RELAY
LED
220V
AC
EXTERNAL !
 DC voltage 5 ... 30V
 DC Adapter (ex. PS1208)

20
PCB
23. PCB