User Manual in PDF - All Spectrum Electronics
Contents
1. 33 42MHz SAW resonator round metal can marked RFM R02112 1 Infrared phototransistor clear T1 3 4 LED package with a green dot on the bottom Q5 1 mini red LED D1 MISCELLANEOUS 1 9V battery snap 1 antenna wire 1 4AA battery holder 1 PVC pipe 2 PVC endcaps 1 pushbutton switch 1 IC socket for U1 RECEIVER BOARD RESISTORS 2 270 ohm resistors red violet brown R7 R8 1 10K ohm resistor brown black orange R5 1 100K ohm resistor brown black yellow R3 1 470K ohm resistor yellow violet yellow R6 1 56K ohm resistor green blue orange may have white body R4 1 68K ohm resistor blue gray orange may have white body R1 1 470 ohm resistor yellow violet brown R2 CAPACITORS 2 01 uF ceramic disc capacitors marked 103 C1 C9 3 1 uF ceramic disc capacitors marked 104 C2 C8 C11 C12 2 10 pF ceramic disc capacitors marked 10 C5 C6 1 001 uF ceramic disc capacitor little green marked 102 C7 3 10 uF electrolytic capacitors C3 C10 C14 1 1 uF electrolytic capacitor C4 1 220 uF electrolytic capacitor C13 INDUCTORS 2 43 nH inductors air coil L2 L1 SEMICONDUCTORS 1 2SC2498 PNP bipolar transistor marked C2570 or C2498 Q1 1 78L05 low power 5 volt regulator marked 78L05 VR1 2 74HC132N quad 2 input Schmitt trigger NAND gate marked M74HC132B1 U1 U4 1 MICRF001BN receiver data demodulator marked MICRF001BN U2 1 HT12D decoder marked HT12D U3 2 LEDs D1 D2 WTS1 8 MISCELLANEOUS 2 Pus2. 4 Phone 585 924 4560 Fax 585 924 4555 www ramseykits com WTS1 WIRELESS TRIP SENSOR Quick Reference Page Guide Introduction to the WTS1 4 WTS1 Circuit Description 4 Parts List 6 Parts Layout Diagram 10 Schematic Diagram 12 Troubleshooting Guide 19 Ramsey Kit Warranty 23
3. Learn As You Build Kit building philosophy This entails describing the circuit that you are building instead of just blindly installing components We hope that this will not only make assembly of our kits easier but help you to understand the circuit you re constructing For each part our word Install always means these steps 1 Pick the correct part value to start with 2 Insert it into the correct PC board location 3 Orient it correctly follow the PC board drawing and the written directions for all parts especially when there s a right way and a wrong way to solder it in Diode bands electrolytic capacitor polarity transistor shapes dotted or notched ends of IC s and so forth 4 Solder all connections unless directed otherwise Use enough heat and solder flow for clean shiny completed connections SINGLE SIDED COMPONENT SOLDERING INSTRUCTIONS You ll notice that the circuit board contains plating on only one side of the board This makes soldering relatively easy for even the inexperienced kit builder Just take your time and be sure to apply enough heat to the connections Don t be too afraid of overheating a component most are fairly hardy and a weak connection will prevent your kit from working properly WTS1 6 In all RF kits it is a good idea to keep the components as close to the board as you can and trim off the excess lengths of the component legs This minimizes stray inductance that might throw off the f
4. SS TRIP SENSOR Ramsey Electronics publication No WTS1 Rev 1 1 January 2003 COPYRIGHT 2003 by Ramsey Electronics Inc 590 Fishers Station Drive Victor New York 14564 All rights reserved No portion of this publication may be copied or duplicated without the written permission of Ramsey Electronics Inc Printed in the United States of America WTS1 3 Wireless Trip Sensor Ramsey Publication No WTS1 Manual Price Only 5 00 TABLE OF CONTENTS Introduction to the WTS1 4 WTS1 Circuit Description 4 Learn As You Build Kit Assembly 5 Parts List 6 Parts Layout Diagram 10 Schematic Diagram 12 Assembly Steps 14 Setup and Testing 18 Troubleshooting Guide 19 Ramsey Kit Warranty 23 KIT ASSEMBLY AND INSTRUCTION MANUAL FOR RAMSEY ELECTRONICS INC 590 Fishers Station Drive Victor New York 14564 Phone 585 924 4560 Fax 585 924 4555 www ramseykits com WTS1 4 INTRODUCTION Do friends keep sneaking up behind you to make some rude noise and make you jump out of your skin Do nosey people keep showing up uninvited and causing you t
5. WTS1 1 Wireless Trip Sensor Ramsey Electronics Model No WTS1 Transmitter fits in an included PVC tube Receiver can be 300ft from transmitter Works with your laser pointer or ambient light Powered by any 9 12 VDC source Uses analog and digital circuitry in a simple robust design Complete and informative instructions guide you to a kit that works the first time every time Learn about simple RF transmitter receiver pair Guard your perimeter and catch those folks trying to sneak up on you with this neat little kit WTS1 2 PARTIAL LIST OF AVAILABLE KITS RAMSEY TRANSMITTER KITS FM10A FM25B FM Stereo Transmitters AM1 AM25 Transmitter RAMSEY RECEIVER KITS FR1 FM Broadcast Receiver AR1 Aircraft Band Receiver SR2 Shortwave Receiver AA7 Active Antenna SC1 Shortwave Converter RAMSEY HOBBY KITS SG7 Personal Speed Radar SS70A Speech Scrambler Descrambler TT1 Telephone Recorder SP1 Speakerphone MD3 Microwave Motion Detector TFM3 Tri Field Meter LC1 Inductance Capacitance Meter RAMSEY AMATEUR RADIO KITS HR Series HF All Mode Receivers QRP Series HF CW Transmitters VLF1 Low Frequency SWL Converter QRP Power Amplifiers RAMSEY MINI KITS Many other kits are available for hobby school scouts and just plain FUN New kits are always under development Write or call for our free Ramsey catalog WTS1 WIRELE
6. We hope that this will not only make assembly of our kits easier but help you to understand the circuit you re constructing For each part our word Install always means these steps 1 Pick the correct part value to start with 2 Insert it into the correct PC board location WTS1 9 3 Orient it correctly follow the PC board drawing and the written directions for all parts especially when there s a right way and a wrong way to solder it in Diode bands electrolytic capacitor polarity transistor shapes dotted or notched ends of IC s and so forth 4 Solder all connections unless directed otherwise Use enough heat and solder flow for clean shiny completed connections SINGLE SIDED COMPONENT SOLDERING INSTRUCTIONS You ll notice that the circuit boards contain plating on only one side of the board This makes soldering relatively easy for even the inexperienced kit builder Just take your time and be sure to apply enough heat to the connections Don t be too afraid of overheating a component most are fairly hardy and a weak connection will prevent your kit from working properly We will begin our assembly with the transmitter the smaller board WTS1 10 WTS1 TRANSMITTER PARTS LAYOUT WTS1 11 WTS1 RECEIVER PARTS LAYOUT DIAGRAM WTS1 12 WTS1 13 WTS1 14 WTS1 TRANSMITTER PC BOARD ASSEMBLY STEPS 1 Install an IC socket for U1 HT12E encoder IC Then pop the HT12E in the socket Make sure
7. and indicate which transmitter activated it In this way you could have up to 4 transmitters in different places in your house and when one WTS1 20 is activated your receiver will sound its alarm and also tell you which transmitter was activated To begin let s take a look at a little theory involving the operation of the transmitter and receiver Pins 10 11 12 and 13 of U1 on the transmitter board are data pins that are normally grounded in the kit When the transmitter is activated the logic state of these pins is transmitted to the receiver and is output on the corresponding pins on U3 the HT12D decoder IC This copying of logic states voltages can be exploited in the following way For example if on the HT12E on the transmitter board pins 10 11 and 12 are grounded and pin 13 is tied to 5V the state of these pins will appear on the corresponding pins on the HT12D on the receiver board So pins 10 11 and 12 will also be 0 volts and pin 13 will be 5V All this is useful in this way suppose you solder a little LED between pin 13 and ground Now when it is tripped and activated 5V the LED will light So how does all this tell you which transmitter was activated What you do is tie a different pin to 5V for each transmitter board One board has pin 10 tied to 5V one has pin 11 tied one pin 12 and one 13 Now on your receiver board solder an LED between pins 10 11 12 and 13 on the HT12D and ground When a tra
8. ansmitter is complete There isn t really any way to test it without the receiver so WTS1 RECEIVER PC BOARD ASSEMBLY STEPS 1 Begin by installing S1 and S2 pushbutton switches Line them up with the drawing on the board and seat them flush to the PC board before soldering them into place 2 Install D1 red LED next to S1 Line up the flat edge with the flat part of the drawing on the board 3 Install D2 in the same way next to S2 4 Install SP1 mini speaker in between D1 and D2 It doesn t have polarity it can go in either way 5 Install C14 10 uF electrolytic capacitor next to D2 Be sure to observe polarity WTS1 16 6 Install R7 270 ohm resistor red violet brown 7 Install VR1 78L05 voltage regulator next to R7 It looks like a transistor and must be placed with the flat side facing in the right direction It should face SP1 This provides 5 V power for the receiver 8 Install C11 1 uF ceramic disc capacitor marked 104 on the left side of SP1 9 Install R8 270 ohm resistor red violet brown next to C11 10 Install R5 10K ohm resistor brown black orange down and to the left of R5 11 Install U1 74HC132N quad 2 input Schmitt trigger NAND gate marked 74HC132B1 next to R5 Be sure the notch at one end of the IC lines up with the notch on the drawing on the board This chip contains logic gates that control the alarm 12 Install C13 220 uF electrolytic capacitor WARNING I
9. f TROUBLESHOOTING GUIDE If the transmitter board s light doesn t come on when the infrared phototransistor is completely dark there is a construction error on the transmitter Check U1 s orientation and then Q1 Q2 Q3 Q4 and Q5 After that check all the electrolytic caps and finally that all the parts are in the right places on the board Also be sure that U1 on the transmitter board is the HT12E and that U3 on the receiver board is the HT12D and that you haven t switched them by accident If the transmitter board s LED comes on but the alarm doesn t sound on the receiver board make sure the transmitter board s antenna isn t lying across the board as described earlier Also try playing with the antenna by moving it around a bit like in the old days before digital cable tv ha ha You can also move the transmitter and receiver closer together The range varies a lot depending on whether you are inside or outside and what lies between the two walls trees large metal objects etc If all this doesn t work check the parts orientation in the same way as you did with the transmitter board MODIFICATIONS For the Ramsey kit builders who have now become power builders there is a modification you can make to juice up your WTS1 Please be aware that you may accidentally break your kit by setting up this mod so it should be for experienced kit builders only This mod will allow one receiver to respond to up to 4 transmitters
10. f the one you get is a red brown can be EXTRA SURE that it is in the right way These tend to explosively disassemble if put in backwards Plus and minus are both marked on the top of these 13 Install an IC socket for U3 HT12D decoder IC under U1 Then place the HT12D in the socket Again watch the notch alignment 14 Install R1 68K ohm resistor blue gray orange next to U3 15 Install C4 1 uF electrolytic capacitor across from R1 Watch the polarity 16 Install X1 3 3149MHz crystal next to C4 It can go in either way X1 is part of the clock oscillator for U2 MICRF001BN 17 Install U2 MICRF001BN receiver data demodulator IC next to C3 This receives the RF transmission from the transmitter board removes the carrier wave and outputs a digital signal 18 Install L1 43 nH inductor air coil 20 Install C5 10 pF ceramic disc capacitor marked 10 21 Install C2 1 uF ceramic disc capacitor marked 104 22 Install C8 1 uF ceramic disc capacitor marked 104 23 Install R3 100K resistor brown black yellow next to C5 24 Install U4 another 74HC132N quad 2 input Schmitt trigger NAND gate with yet more logic gates to control the alarm marked M74HC132B1 next WTS1 17 to C8 Once again line up the notch 25 Install C12 1 uF ceramic disc capacitor market 104 above U1 26 Install R6 470K ohm resistor yellow violet yellow next to C12 27 Install C10 10 uF electrolytic capacito
11. five extra 1K resistors you can pretty much be assured that the 1K ohm resistors are actually the missing 10 K parts Hum m m I guess the red band really does look orange Ramsey Electronics project kits are packed with pride in the USA If you believe we packed an incorrect part or omitted a part clearly indicated in your assembly manual as supplied with the basic kit by Ramsey please write or call us with information on the part you need and proof of kit purchase 3 FACTORY REPAIR OF ASSEMBLED KITS To qualify for Ramsey Electronics factory repair kits MUST 1 NOT be assembled with acid core solder or flux 2 NOT be modified in any manner 3 BE returned in fully assembled form not partially assembled 4 BE accompanied by the proper repair fee No repair will be undertaken until we have received the MINIMUM repair fee 1 2 hour labor of 25 00 or authorization to charge it to your credit card account 5 INCLUDE a description of the problem and legible return address DO NOT send a separate letter include all correspondence with the unit Please do not include your own hardware such as non Ramsey cabinets knobs cables external battery packs and the like Ramsey Electronics Inc reserves the right to refuse repair on ANY item in which we find excessive problems or damage due to construction methods To assist customers in such situations Ramsey Electronics Inc reserves the right to solve their needs on a case by case basis T
12. hbutton switches S1 S2 1 mini speaker SP1 1 RCA jack J1 1 power jack J2 1 3 3149MHz crystal X1 1 pre made antenna assembly 1 IC socket Now let s get building Since you may appreciate some warm up soldering practice as well as a chance to put some landmarks on the PC board we ll first install some hardware components This will also help us to get acquainted with the up down left right orientation of the circuit board RAMSEY Learn As You Build KIT ASSEMBLY There are numerous solder connections on the VLF1 printed circuit board Therefore PLEASE take us seriously when we say that good soldering is essential to the proper operation of your transmitter Use a 25 watt soldering pencil with a clean sharp tip Use only rosin core solder intended for electronics use Use bright lighting a magnifying lamp or bench style magnifier may be helpful Do your work in stages taking breaks to check your work Carefully brush away wire cuttings so they don t lodge between solder connections We have a two fold strategy for the order of the following kit assembly steps First we install parts in physical relationship to each other so there s minimal chance of inserting wires into wrong holes Second whenever possible we install in an order that fits our Learn As You Build Kit building philosophy This entails describing the circuit that you are building instead of just blindly installing components
13. he repair is 50 00 per hour regardless of the cost of the kit Please understand that our technicians are not volunteers and that set up testing diagnosis repair and repacking and paperwork can take nearly an hour of paid employee time on even a simple kit Of course if we find that a part was defective in manufacture there will be no charge to repair your kit But please realize that our technicians know the difference between a defective part and parts burned out or damaged through improper use or assembly 4 REFUNDS You are given ten 10 days to examine our products If you are not satisfied you may return your unassembled kit with all the parts and instructions and proof of purchase to the factory for a full refund The return package should be packed securely Insurance is recommended Please do not cause needless delays read all information carefully WTS1 24 REQUIRED TOOLS Soldering Iron Ramsey WLC100 Thin Rosin Core Solder Ramsey RTS12 Needle Nose Pliers Ramsey MPP4 or RTS05 Small Diagonal Cutters Ramsey RTS04 lt OR gt Technician s Tool Kit TK405 ADDITIONAL SUGGESTED ITEMS Holder for PC Board Parts Ramsey HH3 Desoldering Braid Ramsey RTS08 Digital Multimeter Ramsey M133 TOTAL SOLDER POINTS 164 ESTIMATED ASSEMBLY TIME Beginner 6 hrs Intermediate 3 hrs Advanced 2 hrs RAMSEY ELECTRONICS INC 590 Fishers Station Drive Victor New York 1456
14. is our goal so in the event that you do have a problem take note of the following 1 DEFECTIVE PARTS It s always easy to blame a part for a problem in your kit Before you conclude that a part may be bad thoroughly check your work Today s semiconductors and passive components have reached incredibly high reliability levels and its sad to say that our human construction skills have not But on rare occasions a sour component can slip through All our kit parts carry the Ramsey Electronics Warranty that they are free from defects for a full ninety 90 days from the date of purchase Defective parts will be replaced promptly at our expense If you suspect any part to be defective please mail it to our factory for testing and replacement Please send only the defective part s not the entire kit The part s MUST be returned to us in suitable condition for testing Please be aware that testing can usually determine if the part was truly defective or damaged by assembly or usage Don t be afraid of telling us that you blew it we re all human and in most cases replacement parts are very reasonably priced 2 MISSING PARTS Before assuming a part value is incorrect check the parts listing carefully to see if it is a critical value such as a specific coil or IC or whether a RANGE of values is suitable such as 100 to 500 uF Often times common sense will solve a mysterious missing part problem If you re missing five 10K ohm resistors and received
15. is transistor 15 Install R7 47K ohm resistor yellow violet orange 16 Install R1 470 ohm resistor yellow violet brown 17 Install C1 001 uF ceramic disc capacitor marked 102 18 Install C3 another 001 uF ceramic disc capacitor marked 102 19 Install X1 surface acoustic wave resonator marked RFMR02112 This generates the 433MHz RF carrier WTS1 15 20 Install Q1 the 2SC2570A or 2SC2498 transistor next to X1 21 Install Q2 the 2SC2570A or 2SC2498 PNP bipolar transistor next to Q2 Q1 and Q2 drive the transmitting antenna 22 Install L1 43nH inductor air coil 23 Install C8 10 uF electrolytic capacitor next to L1 Observe polarity The side of the capacitor must line up with the side on the board drawing The side of a capacitor is usually labeled with a band The is the other side 24 Install C7 10 pF ceramic disc capacitor marked 10 adjacent to Q2 25 Install C5 2 pF ceramic disc capacitor marked 2 2 26 Install R8 270 ohm resistor red violet brown 27 Install C2 001 uF capacitor marked 102 28 Install SW1 pushbutton switch next to C2 29 Install the 9V battery snap Solder the red wire into the hole and the black wire into the hole 30 Cut a 5 inch piece of the thin wire and solder one end into the antenna hole marked ANT1 1 4 wavelength at this frequency is approximately 6 5 inches That s it Now the tr
16. nsmitter is activated the appropriate LED will light up on the receiver board To solder onto the pins of the ICs carefully remove them from their sockets bend up the pins you want to solder and reinsert the ICs CONCLUSION We WTS1 21 sincerely hope that you will enjoy the use of this Ramsey product As always we have tried to compose our manual in the easiest most user friendly format that is possible As our customers we value your opinions comments and additions that you would like to see in future publications Please submit comments or ideas to Ramsey Electronics Inc Attn Hobby Kit Department 590 Fishers Station Drive Victor NY 14564 or email us at techsupport ramseymail com And once again thanks from the folks at Ramsey WTS1 22 WTS1 23 The Ramsey Kit Warranty Please read carefully BEFORE calling or writing in about your kit Most problems can be solved without contacting the factory Notice that this is not a fine print warranty We want you to understand your rights and ours too All Ramsey kits will work if assembled properly The very fact that your kit includes this new manual is your assurance that a team of knowledgeable people have field tested several copies of this kit straight from the Ramsey Inventory If you need help please read through your manual carefully all information required to properly build and test your kit is contained within the pages However customer satisfaction
17. o change your plans for the evening You need a way to warn you of these visitors so you have time to prepare You re in luck a way has been found The Ramsey WTS1 will protect you Just hide the sensor somewhere that an intruder s shadow will pass over it and place the receiver in a convenient location nearby When your guest shows up an obnoxious alarm will warn you No more embarrassing moments of being caught unawares In addition to a secure perimeter you also get the benefit of learning some basics of an RF transmitter receiver pair You ll notice that two PC boards came with your kit One is the transmitter and one is the receiver They are both single sided and have fairly loosely spaced parts so you shouldn t have much trouble soldering them up Especially not with our exquisite step by step parts placement instructions Before we begin let us take a brief stroll down theory lane and learn a bit about RF transmitters and receivers shall we WTS1 CIRCUIT DESCRIPTION Before we begin dissecting the circuit let s have a look at the big picture and see what it is that we re trying to accomplish What we want is to have a transmitter that is sensitive to the light level around it and a receiver that sounds an alarm when alerted by the transmitter Take a look at the schematic for the transmitter Infrared phototransistor Q5 responds to the light falling on it If everything is dark Q5 is off resistor R6 biases Q3 and Q4
18. on which pulls the transmit enable pin 14 of the HT12E low The HT12E is an encoder that sends out a code number to the receiver This allows you to have more than one transmitter in the same area Now take a look at the receiver schematic The antenna wire feeds RF that comes from the transmitter into the MICRF001BN receiver IC The MICRF001BN converts the RF to a digital signal which it sends to the HT12D decoder IC The HT12D then compares the code number in the signal with its own code number setting If the two numbers match it signals the rest of the circuit to sound the alarm WTS1 5 RAMSEY Learn As You Build KIT ASSEMBLY There are numerous solder connections on the WTS1 printed circuit board Therefore PLEASE take us seriously when we say that good soldering is essential to the proper operation of your transmitter Use a 25 watt soldering pencil with a clean sharp tip Use only rosin core solder intended for electronics use Use bright lighting a magnifying lamp or bench style magnifier may be helpful Do your work in stages taking breaks to check your work Carefully brush away wire cuttings so they don t lodge between solder connections We have a two fold strategy for the order of the following kit assembly steps First we install parts in physical relationship to each other so there s minimal chance of inserting wires into wrong holes Second whenever possible we install in an order that fits our
19. r at the end of U1 Watch polarity again 28 Install R4 56K resistor green blue orange under U1 29 Install C9 01 uF ceramic disc capacitor marked 103 under R4 30 Install Q1 the last 2SC2570 or 2SC249B PNP bipolar transistor marked C2498 under R3 The flat face should face R3 31 Install C1 01 uF ceramic disc capacitor marked 103 left of Q1 32 Install R2 470 ohm resistor yellow violet brown under C1 33 Install C7 001 uF ceramic disc capacitor marked 102 next to Q1 34 Install L2 43 nH inductor air coil next to C7 35 Install C6 10 pF ceramic disc capacitor marked 10 36 Install J1 RCA jack at the bottom of the board Don t be afraid to gob up the solder on this one It will give the contacts extra mechanical strength 37 Install J2 power jack at the lower right hand corner of the board Go ahead and gob again 38 Install C3 10uF electrolytic capacitor Watch that polarity 39 Using a scrap piece of component lead or other thin wire install JMP1 Form the wire or lead into the form of a staple and solder it in place That s it Now it s time to test out the WTS1 WTS1 18 SETUP AND TESTING First connect the 12V adapter to the receiver board and plug it into the wall Pop 4 AAs into the battery holder and connect it to the transmitter board s 9V connector Turn on the transmitter by pushing the switch out Out is on in is off Turn on the receiver board b
20. requency of some oscillator in your kit WTS1 PARTS LIST Sort and check off the components in the boxes provided We do our best to pack all our kits correctly but it is possible that a mistake has occurred and we missed a part Note that there are 2 boards the bigger receiver board and the smaller transmitter board Please note that physical descriptions of parts are for those currently being shipped Sometimes the parts in your kit may have a different appearance but still have the same values TRANSMITTER BOARD RESISTORS 2 470 ohm resistor yellow violet brown R1 R2 1 2 2K ohm resistor red red red R5 2 47K ohm resistor yellow violet orange R3 R7 1 270 ohm resistor red violet brown R8 2 1M ohm resistor brown black green R4 R6 1 10K ohm resistor brown black orange R9 CAPACITORS 4 001 uF ceramic disc capacitors marked 102 C1 C2 C3 C4 1 10 pF ceramic disc capacitor marked 10 C7 1 2 pF ceramic disc capacitors little green marked 2 2 C5 1 100 pF ceramic disc capacitor marked 101 C6 1 10uF electrolytic capacitor C8 INDUCTORS 1 43 nH air coil L1 SEMICONDUCTORS Note Chips may have other numbers and letters on them the important num bers are those listed in brackets 1 HT 12E HT 12E encoder U1 2 2SC2498 or 2SC2570A PNP bipolar transistor marked C2570A or C2498 Q1 Q2 2 2N304 NPN transistor marked 2N3904 Q3 Q4 1 2N3906 PNP bipolar transistor marked 221334 Q6 WTS1 7 1 4
21. the notch on one end of the chip lines up with the notch on the board drawing The IC socket is for a modification you can make to your kit that is discussed at the end of this manual 2 Install Q4 2N3904 transistor at one end of U1 Be sure the flat side faces D1 like in the board drawing 3 Install Q3 2N3904 transistor just to the left of Q4 Q3 and Q4 form a Darlington pair that gives the WTS1 its high sensitivity to light 4 Install R6 1M ohm resistor brown black green next to Q3 5 Install R3 47K ohm resistor yellow violet orange above Q3 6 Install D1 red LED just to the right of Q4 Make sure the flat edge lines up with the flat side of the drawing on the board 7 Install Q5 infrared phototransistor between Q4 and Q3 This is the detector that senses the ambient light level This part has a green dot on the underside next to the shorter of the two leads The short lead should be installed in the hole closest to Q3 8 Install R4 1M ohm resistor brown black green on the right side of U1 9 Install R2 470 ohm resistor yellow violet brown 10 Install C6 100 pF ceramic disc capacitor marked 101 11 Install C4 001 uF ceramic disc capacitor marked 102 right above U1 12 Install R9 10K ohm resistor brown black orange 13 Install R5 2 2K ohm resistor red red red 14 Install Q6 the PNP transistor marked 221334 Follow the PC board silkscreen for orientation of the flat side of th
22. ver and transmitter boards The PVC pipe we included with your kit is to put your transmitter and battery holder in to give it a more finished look and provide some weather resistance If you want to use this poke the infrared phototransistor out of the hole in one of the PVC endcaps While holding the phototransistor so it WTS1 19 doesn t slip out slide the battery holder and circuit board into the PVC tube Be sure the antenna lies straight down the tube and doesn t come up over the circuit board Push the end cap onto the tube Now push the other endcap onto the tube For a waterproof setup you can buy some silicone RTV at the hardware store and seal up the area around the phototransistor You can then stretch some electrical tape around the area where the endcaps meet the tube Of course to turn the unit on and off you ll have to take off the tape and retape it later A good hiding place for your transmitter is somewhere in a dimly lit area where a shadow will fall on it when someone passes between it and a distant light source The receiver can be put anywhere that is convenient as long as it isn t outside of the transmitter s range Some experimenting will be required to find just the right spot You can also shade the phototransistor with a little piece of tape or by having something positioned to block light from falling directly on it This may be necessary if the transmitter is in a bright area and the alarm keeps going of
23. y pushing switch S2 in Make sure the antenna wire on the transmitter board is routed so that it lies on the board as little as possible It should run down the bottom of the board and hang off the end not go over U1 and the rest of the components Plug the antenna you made into the RCA jack on the receiver board so that it sticks up in the air You need to set the code number that the transmitter and receiver will use Next to U3 on the receiver board and next to U1 on the transmitter board there are a bunch of holes that look like another chip is supposed to go there These are for a jumper to set the code number You have 256 possible code numbers For those of you interested in binary the hole columns each have a number and all the columns together make up a binary number A jumper in hole 0 is number 2 0 or 1 All you need to know is if you only have 1 kit put a jumper in the first set of holes and also in the first set of holes on the transmitter board Cover the IR led on the transmitter board with your hand The red led should light and an obnoxious noise should emanate from the speaker on the receiver board You can push S1 to reset the alarm If the red led lights but there is no obnoxious noise the receiver is not picking up the transmitter s signal Move the two closer together and keep trying Also make sure the transmitter s antenna is routed as described Once you get it working it s time to decide where to place your recei
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