RADIO EVALUATION KIT RFEVAL1 FEATURES • • • • • • • • HARDWARE EVALUATION PLATFORM RANGE TESTING TARGET ENVIRONMENT TESTING ANTENNA EVALUATIONS AM / FM COMPARISON & SELECTION ENCODING / DECODING TESTING REMOTE SWITCHING DATA COMMS DESCRIPTION The RFEVAL1 is a hardware development platform designed to assist the engineer with a ‘Low Power Radio’ Application. This evaluation kit provides easy to build telemetry and data communications applications which may utilise various hardware and software encoders and decoders and also with a variety of radio modules. This enables the engineer to select the optimum radio module and antenna type for a specific target application. Primarily as a hardware development platform, the development boards are a transmitter PCB and a receiver PCB, both of which can accommodate either AM or FM modules. An RS232 serial port is included on each board to allow the designer to connect the boards to PC's and thus create more advanced, data communication systems When completed the system may be used as a complete radio system. Three projects are studied in detail; 1. Simple Radio Switched Relay using Keeloq HCS360 encoder & HCS512 Decoder. (A hardware solution) 2. Remote telemetry switching using Keeloq HCS360 encoder & PIC16C73 Decoder (a software solution) 3. Radio Data Communications; Transmitting a data byte between two PC's The boards are supplied part populated with a pre-tuned PCB antenna ready for use. The user simply populates the PCB’s to the specific schematic diagram as per the project required. CONTENTS LIST Encoder Board Decoder Board Floppy Disk Encoder I/C PWM Encoder I/C Manchester Part No: PCB00229ASSY Part No: PCB00228 Part No: RFEVAL1-SOFTWARE Part No: FW000038 (marked ‘38’) Part No: FW000039 (marked ‘39’) POWER SUPPLY Both transmitter and Receiver Board may be powered from any DC voltage from 9 – 20V The Transmitter encoder Board requires up to 15mA when transmitting. The receiver decoder Board requires up to 20mA. DS000023 Ver 1.1 JAN 00 ©1999 Reg. No. 227 4001, ENGLAND Page 1 RADIO EVALUATION KIT RFEVAL1 CONNECTOR SETTINGS There are several connectors on the boards which are described below; TRANSMITTER J1: Power connector, connect DC power supply to this connector. J5: HCS360 switch input connector, connect external switches to this connector. Note that the +5V feed on J5-1 is common supply to all the switches. J8: HCS360 programming connector. Only use this connector if you require to custom program the HCS360 with specific information e.g. custom manufacturers Key etc, otherwise this can be ignored. Connector J1-1 J1-2 J5-1 J5-2 J5-3 J5-4 J5-5 J8-1 J8-2 J8-3 J8-4 DS000023 Ver 1.1 JAN 00 Connector Type 2 way screw terminal 5.08mm pitch 5 way link header 2.54mm pitch 4 way link header 2.54mm pitch Function +12V in Power Supply 0V in Power Supply +5V feed for switch inputs HCS360 switch input 0 HCS360 switch input 1 HCS360 switch input 2 HCS360 switch input 3 HCS360 pin 5 - GND programming connection HCS360 pin 8 - VCC programming connection HCS360 pin 4 - CLK programming connection HCS360 pin 6 - DATA programming connection ©1999 Reg. No. 227 4001, ENGLAND Page 2 RADIO EVALUATION KIT RFEVAL1 RECEIVER J3: This is the input to the relay driver (ULN2803A) connector. If pins J3-1 to J3-4 are connected to pins J5-1 to J5-4 the HCS512 decoder will switch the onboard relays. J5: This is the output from the HCS512 decoder I/C. these jumper links may be connected to J3 to drive the on board relays, or to external circuitry. J6 – J9: These are screw terminals to the contact side of the relay. These provide ‘volt free’ switches from Relays 1to 4. Three connections are provided; a common, Normally closed and Normally open. Connector J1-1 J1-2 J3-1 J3-2 J3-3 J3-4 J3-5 J5-1 J5-2 J5-3 J5-4 J5-5 J6-1 J6-2 J6-3 J7-1 J7-2 J7-3 J8-1 J8-2 J8-3 J9-1 J9-2 J9-3 Connector Type 2 way screw terminal 5.08mm pitch 5 way link header 2.54mm pitch 5 way link header 2.54mm pitch 3 way screw terminal 5.08mm pitch 3 way screw terminal 5.08mm pitch 3 way screw terminal 5.08mm pitch 3 way screw terminal 5.08mm pitch Function +12V in 0V in Relay driver input 1 Relay driver input 2 Relay driver input 3 Relay driver input 4 +5V HSC512 output 0 (Active High) HSC512 output 1 (Active High) HSC512 output 2 (Active High) HSC512 output 3 (Active High) GND Relay 1 normally closed Relay 1 common Relay 1 normally open Relay 2 normally closed Relay 2 common Relay 2 normally open Relay 3 normally closed Relay 3 common Relay 3 normally open Relay 4 normally closed Relay 4 common Relay 4 normally open NOTES ON ANTENNA The transmitter antenna has been incorporated as a PCB ‘tuned loop’. Designed to resonate at 433.92MHz the loop has been designed to be the most efficient method for transmitting the signal from the smallest possible size. Note the SMT capacitors mounted on the PCB tune the loop to 433.92MHz. If copying these loop antenna to other applications, The required capacitor values are; For the AM module at 433MHz C11 (Feed Cap) = 1pF C12 (Cap in Loop) = 1.8pF For the FM module at 433MHz C1 (Feed Cap) = 10pF C2 (Cap in Loop) = 1.5pF C3 (Cap in Loop) = 1pF DS000023 Ver 1.1 JAN 00 ©1999 Reg. No. 227 4001, ENGLAND Page 3 RADIO EVALUATION KIT RFEVAL1 The following type approved antennas may also be used with the transmitter and the receiver. Note that if an alternative antenna is to be fitted then remember to remove the connection to the PCB track antenna by removing the feed capacitor! ANTENNA 1 – HELICAL COIL (PART NO PU-4BA-433, PU-BNC-433) Wire coil, connected directly to RF in/out, open circuit at the other end. This antenna has a high Q Factor, for trimming, the length may be adjusted. This is a popular antenna as it consumes little space. The helical detunes badly with proximity to other conductive objects. ANTENNA 2 –TUNED LOOP (incorporated on PCB) A PCB track tuned by the capacitor to ground at the ‘HOT’ end. Fed from ANT pin at a point 20% from the ground end. Loops have a high immunity to proximity de-tuning. e.g. a human hand used to operate the transmitter coming into relative close proximity to the loop. Antenna 3 – Whip (PART NO FLEXI-4BA-433, FLEXI-BNC-433) Can be either PCB track, wire rod or a combination of the two. One end connected to ANT pin, the other open. Optimum total length is 17.3cm (¼ wave @ 433MHz). The optimum position is to locate the antenna so that it protrudes directly upwards. Keep the open circuit (hot) end well away from metal components to prevent serious de-tuning. Whips are ground plane sensitive and will benefit from internal ¼ wave earthed radial(s) if the product is small and plastic cased. Helical Coil Antenna Loop Antenna Whip Antenna RF RF RF 17.3cm @ 433MHz 34 Turns of enamelled copper wire diameter 0.5mm close wound on 2.5mm diameter former Loop Antenna Area 4 To 10cm2 Track Width 1mm RF GND Capacitor 1.5 - 5pF Fixed or Variable Figure 1: Antenna Configurations Advantages / Disadvantages of Each Antenna Feature Helical Loop JJ J Performance JJ J Ease of design JJJ JJ Size Immunity to hand de-tuning and or JJ JJJ components in close proximity Whip JJJ JJJ J J Note: The range achieved from the system is dependent on the choice and position of the antenna. The space around the antenna is as important as the antenna itself. Try to keep the antenna away from other metal in the system such as transformers, batteries and PCB tracks, especially ground planes. In particular, the ‘HOT’ end of the antenna should be kept as far away as possible from these. DS000023 Ver 1.1 JAN 00 ©1999 Reg. No. 227 4001, ENGLAND Page 4 RADIO EVALUATION KIT RFEVAL1 PROJECT #1; REMOTE SWITCHED RELAY USING KEELOQ HCS360 ENCODER & HCS512 DECODER. (A HARDWARE SOLUTION) Encoder Schematic : Fig 66 Decoder Schematic : Fig 68 This project demonstrates the operation of the Microchip KeeLoq hardware encoder and decoder devices and allows the remote operation of a relay over either an AM or an FM radio link. The data which is transmitted over the radio link is PWM encoded and details of the precise format are given in the HCS360 data sheet (available from Microchip Technology). The hardware for the project is built on the transmitter and receiver evaluation boards and the parts lists are given in appendix B. The transmitter unit consists of a simple KeeLoq circuit using the HCS360 (marked ‘38’) and the selected AM or FM radio module. The PCB aerial track can be used or alternately a helical stub or 1/4 wave whip aerial can be connected using a short length of 50Ω co-axial cable. The transmitter functions are all handled by the HCS360 which outputs a PWM coded data stream and so designer should ensure that the HCS360 marked ‘38’ is used. The PWM output is directly compatible with the HCS512 decoder. The receiver unit consists of an AM or an FM radio module, (selected to match the transmitter module) and the HCS512 KeeLoq device and its associated components. In addition it will be necessary to connect an external aerial and this can take the form of either a helical stub or 1/4 wave whip connected using a short length of coaxial cable. Operation of the system is extremely simple: when the transmitter push (SW1-4) button is operated, the radio module is powered up and while the button is held depressed a series of data frames is transmitted. The receiver radio module is always powered up and it passes the received data to the HCS512 which decodes the data and actuates the relay (RL1-4) when valid frames are being received. TEACHING A ENCODER TO A DECODER 1. 2. 3. 4. 5. Press the programming switch on the Rx decoder once The learn LED will illuminate Press one of the switches on the Tx encoder once, learn LED on the Rx decoder will extinguish Press one of the switches on the Tx encoder again, learn LED will flash When the learn LED has stopped flashing this Tx encoder will now operate the system ERASING EXISTING TX ENCODER 1. To completely erase the Tx encoders, press programming switch on the Rx decoder for 10 seconds. 2. The learn LED will turn off after the 10 seconds to indicate the Tx encoder(s) have been erased DS000023 Ver 1.1 JAN 00 ©1999 Reg. No. 227 4001, ENGLAND Page 5 RADIO EVALUATION KIT RFEVAL1 PROJECT #2; REMOTE TELEMETRY SWITCHING USING KEELOQ HCS360 ENCODER & PIC16C73 DECODER (A SOFTWARE SOLUTION) Encoder Schematic : Fig 66 Decoder Schematic : Fig 70 This project provides a remote telemetry function as in project #1. However the decoding is performed within a standard PIC microcontroller instead of within a dedicated Keeloq decoder I/C. For this reason the Keeloq encoder part HCS360 marked ‘39’ should be used. For applications where a simple remote control feature is required as a low cost ‘bolt on feature’ this project is most applicable. The decoding of the Keeloq data can be performed as one small task of the main microcontroller that exists within the application. This reduces the hardware cost to a minimum, as a receiver is the only additional hardware required. The transmitter encoder is the same as Project #1. It is assumed that for production a commercially available keyfob/transmitter encoder will be used. This will already have all the relevant EMC compliance for licence free use. For this project , the chosen microcontroller is the PIC16C73A, however many other microcontrollers may be used. If another PIC is to be used then the assembler code may well be ported directly across. The data which is transmitted over the radio link is Manchester encoded and details of the precise format are given in the HCS360 data sheet (available from Microchip Technology). The receiver captures the information and outputs the CMOS/TTL data to the PIC16C73A. The PIC16C73A decodes the data and outputs the relevant signal to the relays so that when the user presses switch ‘1 to 4’ the relays’ 1 to 4 will operate. The transmitter functions are all handled by the HCS360 which outputs a MANCHESTER coded data stream and so designer should ensure that the HCS360 marked ‘39’ is used. The MANCHESTER output provides a better signal type for the radio link thus achieving a greater range than in PWM systems. When completed the reader may note that the telemetry link may be further secured by using a unique ‘manufacturers Key’. What this means is that the transmitted signal is customised with a unique encrypted number. This number is totally secure and cannot be read or interpreted by any third party. Only a decoder with the same manufacturers key may decrypt this number. Further information is detailed in Appendix A. The result is a remote control system where only the transmitter encoder with this special manufacturers key may be learnt by the receiver decoder (with its own matching manufacturers key). The part list is shown in Appendix B. The software included on the floppy disk provides the following software; P403.asm This is the main source code routine P403man.asm This is the source subroutine ‘MAN’ P403PWM.asm This is the source subroutine ‘PWM’ PIC16c73A.inc This is an Include file used by MPLAB P403.lst This is the complete Listing File P403.hex This is the object code which may be directly programmed into the PIC DS000023 Ver 1.1 JAN 00 ©1999 Reg. No. 227 4001, ENGLAND Page 6 RADIO EVALUATION KIT RFEVAL1 PROJECT #3; TRANSMITTING A DATA BYTE BETWEEN TWO PC'S Encoder Schematic : Fig 72 Decoder Schematic : Fig 74 This project looks briefly at the problems of passing serial data over a low power radio link and takes the designer down the first steps in designing a simple ‘Radio Packet Controller’ (RPC) which could be extended to include error detection and other more advanced features. It is not possible to simply feed asynchronous data into a radio module and expect the data to emerge 'unscathed' from the receiver module. For this reason a ‘Radio Packet Controller’ (RPC) is available specifically designed to enable asynchronous data transmission The basic problem with transmitting serial asynchronous data between say a couple of PC's is that the data content is not likely to be ‘balanced’ (100% ac content). This would cause the radio module receiver to malfunction because of the receive data slice circuitry becoming biased by a cumulative string of '1' or '0' bits which appear in the received data. It may in some instances be possible to encode the data in the transmitting PC such that this problem is minimised, but in general this is not a valid option. Most applications will require an interface between the RS232 port on the PC and the radio transmitter module, which codes the data to give optimum performance from the radio link irrespective of the content of the data which is being transmitted. This function is normally combined with the creation of a data packet structure where individual characters are not transmitted, but instead a number is sent at a point in time in a composite frame. This also provides receiver biasing and error detection. The principle of the RPC which is described in this project is simple, the RS232 serial port on the transmitter is used to receive characters from a PC. When eight characters have been received, they are formed into a packet and transmitted as a frame. The frame has a header, and a sync byte, and the data characters are coded in Manchester format. This is similar to the format utilised in the Microchip HCS360 encoder. The receiving software decodes the frame and outputs the characters on an RS232 port. The system has been designed to be a demonstration of the principles of an RPC and requires that the user enter characters in blocks of 8 with a pause between each block. This is clearly a limitation on the user, which in practice might not be acceptable. However by using the software for this project as a starting point, the software engineer should be able to overcome this by implementing interrupt driven communications and more complex buffering at both ends of the link. The transmitter and receiver boards both use the PIC16C73A processor and these devices communicate with the PC's using the PIC on board UART's and over RS232 data links which are supported by the on board level shifter circuitry. The system will function with either AM or FM radio modules and is an excellent way of carrying out module selection and also as a means of testing out different aerial systems. The software for the transmitter runs in a PIC16C73A and consists of two main blocks which carry out the following functions: 1. Transmitter reception of 8 data bytes and their transfer into a buffer from the host PC using the PIC16C73’s on board UART. 2. Transmission of a frame of RF data consisting of a preamble, a synchronous element, the actual data block itself in Manchester format and a guard period. The software for the receiver runs in a PIC 16C73 and again consists of two main blocks which carry out the following functions: 1. Reception of the frame and transfer of the data into a buffer. 2. Transmission of the 8 data bytes to the PC using the on board UART. DS000023 Ver 1.1 JAN 00 ©1999 Reg. No. 227 4001, ENGLAND Page 7 RADIO EVALUATION KIT RFEVAL1 The software included on the floppy disk provides the following software; Transmitter Encoder software P404.asm P404man.asm P404sub.asm PIC16c73A.inc P404.lst P404.hex This is the main source code routine This is the source subroutine ‘MAN’ This is the source subroutine ‘PWM’ This is an Include file used by MPLAB This is the complete Listing File This is the object code which may be directly programmed into the PIC Receiver Decoder software P405.asm P405sub.asm PIC16c73A.inc P405.lst P405.hex DS000023 Ver 1.1 JAN 00 This is the main source code routine This is the source subroutine ‘PWM’ This is an Include file used by MPLAB This is the complete Listing File This is the object code which may be directly programmed into the PIC ©1999 Reg. No. 227 4001, ENGLAND Page 8 RADIO EVALUATION KIT RFEVAL1 TECHNICAL SPECIFICATIONS Storage Temperature; -10 to +70o Celsius. Operating Temperature; 0 to +55o Celsius. Dimensions: Enclosure : 190 x 120 x 60 mm PCB: 174 x 106mm TRANSMITTER TECHNICAL SPECIFICATION ELECTRICAL CHARACTERISTICS Supply Voltage Supply Current (not including transmitter Module): Quiescent Whilst transmitting MIN 11.0 TYPICAL 16.0 MAX 30.0 DIMENSION V 10 2 µA mA MAX DIMENSION MHz -dBm -dBc µSec AM TRANSMITTER MODULE AM-RT4-433, AM-RT5-433 (M1, M2) ELECTRICAL CHARACTERISTICS Working Frequency RF Output Power into 50Ω (Vcc=5V) Harmonic Spurious Emissions Time from Power on to data transmission Operating Temperature Range MIN TYPICAL 433.92 0 -30 10 -25 +80 o C FM TRANSMITTER MODULE FM-TX2-433, (M3) ELECTRICAL CHARACTERISTICS supply current RF power nd 2 harmonic Modulation bandwidth @ -3dB overall frequency accuracy power up time to full RF Operating Temperature Range DS000023 Ver 1.1 JAN 00 MIN TYPICAL MAX DIMENSION 7 +6 10 +9 -65 - 14 +12 -54 20 +70 100 +55 mA dBm dBc kHz kHz µs o C DC -70 -10 ©1999 Reg. No. 227 4001, ENGLAND Page 9 RADIO EVALUATION KIT RFEVAL1 RECEIVER TECHNICAL SPECIFICATION ELECTRICAL CHARACTERISTICS Supply Voltage Supply Current (not including receiver module): Quiescent All Relays operating MIN 11.0 TYPICAL 16.0 MAX 30.0 DIMENSION V 2 1 mA mA A @12Vdc A @50Vdc 5 250 Relay Rating RLY1-4 FM RECEIVER MODULE FM-RX2-433 (M1) ELECTRICAL CHARACTERISTICS supply current RF sensitivity for 10dB (S+N)/N initial frequency accuracy Audio baseband bandwidth @ -3dB power up to stable data, TPU-DAT time between data transitions mark:space ratio Operating Temperature Range MIN TYPICAL MAX DIMENSION 11 13 -113 0 20 50 17 -107 +30 7 0.07 80 +55 mA dBm kHz kHz ms ms % o C TYPICAL MAX DIMENSION 2.5 -105 1.2 +/- 2 3 +/- 3 2000 +85 mA dBm Secs MHz Hz o C TYPICAL MAX DIMENSION 5 -106 +/-400 6 mA dBm KHz KHz mSecs o C -30 0.006 15 20 -10 AM RECEIVER MODULE AM-HRR3-433 (M2) ELECTRICAL CHARACTERISTICS Supply Current R.F Sensitivity 100% AM (AM-HRR3-XXX) Time from Power HRR3 on to Valid Output Signal -3dB Bandwidth Data Rate Operating Temperature Range MIN -100 50 -25 AM RECEIVER MODULE AM-RRS2-433 (M3) ELECTRICAL CHARACTERISTICS Supply Current R.F Sensitivity (100% AM) 3dB Bandwidth Max Data Rate Turn on Time Operating Temperature Range MIN 3 20 +80 -25 For more information or general enquiries, please contact R. F. Solutions Ltd., Unit 21, Cliffe Industrial Estate, South Street, Lewes, E Sussex, BN8 6JL. England Tel +44 (0)1273 898 000 Email [email protected] Fax +44 (0)1273 480 661 http://www.rfsolutions.co.uk RF Solutions is a member of the Low Power Radio Association All Trademarks acknowledged and remain the property of the respected owners Information contained in this document is believed to be accurate, however no representation or warranty is given and R.F. Solutions Ltd. assumes no liability with respect to the accuracy of such information. Use of R.F.Solutions as critical components in life support systems is not authorised except with express written approval from R.F.Solutions Ltd. DS000023 Ver 1.1 JAN 00 ©1999 Reg. No. 227 4001, ENGLAND Page 10 RADIO EVALUATION KIT RFEVAL1 Appendix A: An Introduction to KEELOQ The keeloq system is a patented code hopping technology used primarily in remote control applications. The encryption and decryption devices are manufactured by Microchip Technology Inc. and provide an ideal solution to remote control systems. The Keeloq algorithm is a highly secure digital data protocol that uses a 67-bit transmission code. Each time a switch is pressed on a transmitter encoder the data transmitted is different, even if the same switch is pressed twice. A corresponding receiver decoder will also never respond to the same code twice. By using a large number of possible transmission combinations means it would take over 5,000 Billion years for a person to scan through all the possible combinations. For a Keeloq encoder and decoder to work with each other they both must have the same Manufactures Key. This is 64-bit number that is programmed into each device. Once both chips have the same Manufactures Key then a encoder can be taught to a decoder. The decoder then stores in memory the Serial Number of the encoder, this is a unique number that is programmed into each encoder. In this system the receiver decoder automatically ‘hops’ in sync with the transmitter encoder. If a transmitter encoder is pressed more than 50 times out of range of the receiver decoder then the system will be out of sync. If this situation occurs then the user only needs to press the switch twice on the transmitter encoder within the range of the receiver decoder for the system to resynchronise. The keeloq system also has various built in functions. Auto Shut-off Timer is used if a switch on the encoder inadvertently gets pressed for a long period of time. After 25 seconds the auto shut-off function automatically stops the device from transmitting and so prevents the transmitter from draining the battery. The keeloq encoder also transmits the voltage status of the battery. If the battery voltage becomes low then the Keeloq encoder will transmit this information to the decoder. The decoder can then indicate to the user that the transmitter battery needs replacing. For more detailed information on Keeloq please refer to the Microchip Technology data sheets. DS000023 Ver 1.1 JAN 00 ©1999 Reg. No. 227 4001, ENGLAND Page 11 RADIO EVALUATION KIT RFEVAL1 Appendix B: Project Part Lists and Schematic Diagrams Project #1: Hardware Encoder Parts List Reference Value C1 C2 C3, C11 C5 C6, C10 C12 C13 D1 D2,D3, D4, D5 D6 IC3 IC4 J1 J5 J8 M1 M2 M3 Q1 Q2, Q3 R1 R2, R3, R4 SW1, SW2, SW3, SW4 10pF 0805 Capacitor 1.5pF 0805 Capacitor 1pF 0805 Capacitor 10µF 16V Electrolytic Capacitor 100nF 2.54mm Pitch Capacitor 1.8pF 0805 Capacitor 220pF 0805 Capacitor 3mm LED 1N4148 Diode 1N4001 Diode HCS360/P L78L05ACZ 2 way screw terminal 5.08mm pitch 5 way link header 4 way link header AM-RT4-433 AM-RT5-433 FM-TX2-433 BC212B BC546B 1K5 ¼ Watt 10K ¼ Watt DTS619 Project #1: Hardware Decoder Parts List DS000023 Ver 1.1 JAN 00 Reference Value C1 C5 C6 D1 IC4 IC5 IC6 IC7 J1 J3, J5 J4 J6, J7, J8, J9 LED2, LED3, LED4, LED5, LED6, LED7 M1 M2 M3 Q1 R1, R7, R9, R12, R13, R14 R3, R4, R5, R6, R8, R11 R10 RL1, RL2, RL3, RL4 SW2 10pF 2.54mm pitch 10µF 16V Electrolytic Capacitor 100nF 2.54mm Pitch Capacitor 1N4001 Diode L78L05ACZ HCS512 DS1233 ULN2803A 2 way screw terminal 5.08mm pitch 5 way link header 4 way link header 3 way screw terminal 5.08mm pitch 3mm LED FM-RX2-433 AM-HRR3-433 AM-RSS2-433 BC546B 10K ¼ Watt 1K ¼ Watt 100K ¼ Watt BT47W/6 Relay DTS619 ©1999 Reg. No. 227 4001, ENGLAND Page 12 RADIO EVALUATION KIT RFEVAL1 Project #2: Software Encoder Parts List As per Project #1: Hardware Encoder Parts List Project #2: Software Decoder Project Parts List DS000023 Ver 1.1 JAN 00 Reference Value C5 C6 D1 IC1 IC3 IC4 IC7 J1 J3 J6, J7, J8, J9 LED1, LED2, LED3, LED4, LED5 M1 M2 M3 R1 R2 R3, R4, R5, R6 RL1, RL2, RL3, RL4 SW1 X1 10µF 16V Electrolytic Capacitor 100nF 2.54mm Pitch Capacitor 1N4001 PIC16C73A/P 93LC76 L78L05ACZ ULN2803A 2 way screw terminal 5.08mm pitch 5 way link header 3 way screw terminal 5.08mm pitch 3mm LED FM-RX2-433 AM-HRR3-433 AM-RSS2-433 10K ¼ Watt 470R ¼ Watt 1K ¼ Watt BT47W/6 DTS619 3 pin resonator - 4.0 MHz ©1999 Reg. No. 227 4001, ENGLAND Page 13 RADIO EVALUATION KIT RFEVAL1 Project #3: Transmitter Data Comms Parts List Reference Value C1 C2 C3, C11 C4, C6, C7, C8, C9, C10 C5 C12 C13 D2, D3, D4, D5 D6 IC1 IC2 IC4 J1 J2 J4 J5 M1 M2 M3 Q1 Q2, Q3 R1 R2, R3, R4 SW1, SW2, SW3, SW4 X1 10pF 0805 Capacitor 1.5pF 0805 Capacitor 1pF 0805 Capacitor 100nF 2.54mm Pitch Capacitor 10µF 16V Electrolytic Capacitor 18pF 0805 Capacitor 220pF 0805 Capacitor 1N4148 Diode 1N4001 Diode PIC16C73A/P MAX232A L78L05ACZ 2 way screw terminal 5.08mm pitch 9 way D-type female connector 6 way link header 5 way link header AM-RT4-433 AM-RT5-433 FM-TX2-433 BC212B BC546B 1K5 ¼ Watt 10K ¼ Watt DTS619 3 pin resonator - 4.0 MHz Project #3: Receiver Data Comms Parts List DS000023 Ver 1.1 JAN 00 Reference Value C2, C3, C4, C6, C7 C5 D1 IC1 IC2 IC4 IC7 J1 J2 J3 J6, J7, J8, J9 LED2, LED3, LED4, LED5 M1 M2 M3 R1 R3, R4, R5, R6 RL1, RL2, RL3, RL4 X1 100nF 2.54mm Pitch Capacitor 10µF 16V Electrolytic Capacitor 1N4001 Diode PIC16C73A/P MAX232A L78L05ACZ ULN2803A 2 way screw terminal 5.08mm pitch 9 way D-type female connector 5 way link header 3 way screw terminal 5.08mm pitch 3mm LED FM-RX2-433 AM-HRR3-433 AM-RSS2-433 10K ¼ Watt 1K ¼ Watt BT47W/6 3 pin resonator - 4.0 MHz ©1999 Reg. No. 227 4001, ENGLAND Page 14 RADIO EVALUATION KIT RFEVAL1 Project #1: Hardware Encoder Circuit Diagram DS000023 Ver 1.1 JAN 00 ©1999 Reg. No. 227 4001, ENGLAND Page 15 RADIO EVALUATION KIT RFEVAL1 Project #1: Hardware Decoder Circuit Diagram DS000023 Ver 1.1 JAN 00 ©1999 Reg. No. 227 4001, ENGLAND Page 16 RADIO EVALUATION KIT RFEVAL1 Project #2: Software Decoder Circuit Diagram DS000023 Ver 1.1 JAN 00 ©1999 Reg. No. 227 4001, ENGLAND Page 17 RADIO EVALUATION KIT RFEVAL1 Project #3: Transmitter Data Comms Circuit Diagram DS000023 Ver 1.1 JAN 00 ©1999 Reg. No. 227 4001, ENGLAND Page 18 RADIO EVALUATION KIT RFEVAL1 Project #3: Receiver Data Comms Circuit Diagram DS000023 Ver 1.1 JAN 00 ©1999 Reg. No. 227 4001, ENGLAND Page 19