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10 

14. Operation

 

Operation 

 

1. Control  section  (P8023S):   

 
Both PCBs are connected to each other by means of two wires, VTX+ and VTX-. They supply power to the 
control board and carry the data signal. This signal contains information regarding the status of the 10 inputs.  
Filtering and regulating of the power supply is performed by VR2, together with C15, C12, C13 and C14, 
which also suppress possible oscillation of the voltage regulator. 
The micro controller continuously monitors the status of the inputs, and switches T2 according to a custom 
developed serial protocol. This allows a current to flow in the VTX wires.  LD12 also lights allowing you to 
check the operation of the system. 
 

2. Receiver  section  (P8023R): 

 
The receiver end also contains a power supply section.  Diodes D1 to D4 rectify the incoming power.   
Voltage regulator VR1 and the surrounding capacitors make sure the control part receives a regulated 10V.  
From this 10V, R12, ZD1 and C8 derive 5V DC to supply the microcontroller. The actual receiving part 
consists of D6, D7, R14, R15 and T1. The current variations in the VTX-lines cause a  
voltage drop over R15, which is filtered by C3 and amplified by T1, before it is fed to the micro controller.  
Reception is indicated by LD11. The microcontroller analyses the serial signal, and puts the corresponding 
outputs high or low.   
Because the microcontroller cannot sink large currents, we added IC2 and IC3, which provide open collector 
outputs. 

Summary of Contents for High-Q Velleman-kit K8023

Page 1: ...Channel 2 Wire REMOTE CONTROL K8023 ILLUSTRATED ASSEMBLY MANUAL H8023IP 1 Total solder points 247 Difficulty level beginner 1 2 3 4 5 advanced Control up to 10 devices from a distance using only 2 wir...

Page 2: ...ions are included All outputs are provided with LED indication Can be used with our kits K8000 K8006 K8046 K8050 Can be connected to our standard relay card K6714 K6714 16 Specifications 10 open colle...

Page 3: ...he 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 ha...

Page 4: ...ts 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 You will...

Page 5: ...14 1K 1 0 2 B R15 22 2 2 0 B 3 Resistors R Construction Assembly of the receiver PCB P8023R D1 1N4007 D2 1N4007 D3 1N4007 D4 1N4007 D5 1N4007 D6 1N4007 1 Diodes Watch the polarity D CATHODE ZD1 5V1 50...

Page 6: ...F C8 100 F 8 Electrolytic capacitors Watch the polarity C X1 4MHz X 9 Quartz crystal SK1 SK8 2p 10 Screw connectors C9 1000 F 25V 11 Electrolytic capacitor Watch the polarity C VR1 UA7810 12 Voltage...

Page 7: ...1 10K 1 0 3 B R22 10K 1 0 3 B R23 10K 1 0 3 B R24 10K 1 0 3 B 2 Resistors R R25 10K 1 0 3 B R26 10K 1 0 3 B R27 10K 1 0 3 B R28 220 2 2 1 B 9 IC4 18p 3 IC socket Watch the po sition of the notch C10 1...

Page 8: ...y C X2 4MHz X 9 Quartz crystal SK9 3p SK10 SK14 2p 10 Screw connectors Construction C15 470 F 25V 11 Electrolytic capacitor Watch the polarity C IC4 VK8023 VK8023 Programmed PIC16C54C 04 Pay attention...

Page 9: ...if the distance between the switches and the circuit exceeds 1m 3 a shielded cable must be used to connect the switches The shield must be connected to the COM terminal If the K8023 circuit is powered...

Page 10: ...o lights allowing you to check the operation of the system 2 Receiver section P8023R The receiver end also contains a power supply section Diodes D1 to D4 rectify the incoming power Voltage regulator...

Page 11: ...1 15 Hook up Examples Hook up examples 1 Connecting the K8023 to the K6714 relais card P8023R 12 15Vin VTX 1 2 3 4 5 6 7 8 9 10 Vext GND From P8023S VB GND 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 P6714...

Page 12: ...12 Hook up examples 2 Connecting the K8023 to the K6711 IR receiver P8023S P6711 TO P8023R VA GND VB GND 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 V VTX COM 1 2 3 4 5 6 7 8 9 10...

Page 13: ...examples 3 Connecting the K8023 to the K8006 modular light system P8006 P8023R 12V 300mA 12 15Vin VTX 1 2 3 4 5 6 7 8 9 10 Vext GND Base unit for home modular light system C 1 2 3 4 5 From P8023S TO S...

Page 14: ...p examples 4 Connecting the K8023 to the K8000 computer interface card P8023R 12 15Vin VTX 1 2 3 4 5 6 7 8 9 10 Vext GND From P8023S P8000 IO 1 IO 2 IO 3 IO 4 IO 5 IO 6 IO 7 Computer Interface Board 1...

Page 15: ...RB6 12 RB7 13 VSS 5 MCLR VPP 4 OSC1 CLKIN 16 T0CKI 3 OSC2 CLKOUT 15 VDD 14 IC4 VK8023 PIC16C54 GND2 GND2 GND2 GND2 GND2 GND2 R28 220 0 6W R16 1K R17 4K7 R18 10K R19 10K R20 10K R21 10K R22 10K R23 10K...

Page 16: ...A1 18 RA2 1 RA3 2 RB0 6 RB1 7 RB2 8 RB3 9 RB4 10 RB5 11 RB6 12 RB7 13 VSS 5 MCLR VPP 4 OSC1 CLKIN 16 T0CKI 3 OSC2 CLKOUT 15 VDD 14 IC1 VK8023 PIC16C54 GND GND GND GND GND GND GND GND X1 4Mhz GND GND G...

Page 17: ...17 R19 R21 SK11 COM VTX SK9 D7 C15 3 2 1 SK10 R20 R22 SK13 6 5 4 7 SK12 IC4 9 8 10 SK14 R23 R24 R18 C13 T2 R28 VR2 C12 LD12 R26 C14 R27 R16 X2 P8023S 1 VELLEMAN R17 R25 C10 C11 PCB 18 Control PCB...

Page 18: ...C3 R13 ZD1 C7 C5 D4 C9 LD11 C8 D3 C2 VR1 C4 D2 SK2 SK1 R11 D1 R12 12 15Vin VTX SK7 R7 VELLEMAN P8023R 1 R14 R1 LD1 X1 C6 C1 4 3 2 6 5 R4 R2 R3 IC2 R5 R6 5 SK3 SK4 R15 D6 1 2 3 4 SK6 SK5 6 7 8 9 9 8 7...

Page 19: ......

Page 20: ...ions and typographical errors reserved Velleman Components nv H8023IP 2004 ED1 VELLEMAN Components NV Legen Heirweg 33 9890 Gavere Belgium Europe www velleman be www velleman kit com 5 4 1 0 3 2 9 2 9...

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