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URC1 

 1  

UNIVERSAL REMOTE 
CONTROL   

Ramsey Electronics Model No.             URC1 

Do you need to turn things on and off through your telephone or 
HAM radio? Do you need to remotely access repeaters, your 
cottage thermostat, or your home security lights? This is the kit for 
you! The URC1 is a Fully expandable system to control 64 
outputs, four variable voltage levels, two variable resistances, and 
three real time timers, all through DTMF tones! All of this with full 
password protection, comprehensive codes, and expandability! 

 Six digit display for long codes 

 Fast DTMF decoding time for automatic phone dialers 

 Sensitive and accurate audio input for faint tones 

 Tone feedback for confirmation of commands 

 Full microprocessor control for ease of use 

 Included are 15 switched outputs, 4 adjustable voltage outputs 

(0-5VDC), 2 digital pots, and 3 real time timers with on and off 
times adjustable from 10 ms to 40 hours. 

 Two levels of password protection, with a master as well as a 

user password. 

 Add our matching case and knob set for a finished "pro-look." 

 Informative manual answers questions on theory, hook-ups and 

uses - enhances resale value, too!

 

Summary of Contents for URC1

Page 1: ...ection comprehensive codes and expandability Six digit display for long codes Fast DTMF decoding time for automatic phone dialers Sensitive and accurate audio input for faint tones Tone feedback for c...

Page 2: ...ies HF All Mode Receivers QRP Series HF CW Transmitters CW700 Micro Memory CW Keyer CPO3 Code Practice Oscillator Packet Computer Interfaces QRP Power Amplifiers RAMSEY MINI KITS Many other kits are a...

Page 3: ...8 Initial testing 14 Troubleshooting tips 15 Hints and Using 16 Setup 19 Charts and diagrams 20 Control codes 22 Notes and passwords 27 Connector Considerations 28 Expanding notes 28 Schematic diagra...

Page 4: ...DTMF for turning voltage levels up and down pots up and down timers on and off and outputs on and off It uses the 0 9 digits as well as the and digits of a DTMF encoder but can also use A D tones for...

Page 5: ...and U3 are serial shift registers Data is clocked into them bit by bit from the microprocessor and then latched to the outputs by a change in state on the LDS line One of the outputs from these chips...

Page 6: ...good soldering technique let your soldering iron tip gently heat the traces to which you are soldering heat both wires and pads simultaneously Apply the solder on the iron and the pad when the pad is...

Page 7: ...ransistor Q1 CAPACITORS 5 01uF disk ceramic capacitors marked 01 or 103 or 10 nF C2 5 7 10 11 1 1uF disk ceramic capacitor marked 1 or 104 C8 1 470pF disk ceramic capacitor marked 470 or 471 C9 1 100u...

Page 8: ...lead while PC boards will usually indicate the hole At this point you may wish to make the decision of whether or not to use IC sockets to mount your ICs Though they will add to the cost of your kit...

Page 9: ...14 Install D9 one of the 1N4002 diodes These diodes are used to steer the supply voltage to the microcontroller During normal operation these diodes steer the voltage away from trying to recharge B1...

Page 10: ...a 1M ohm resistor brown black green 25 Install U5 the 145436 tone decoder IC 14 pin dip marked MC145436 Make sure and double check it s orientation before soldering Also check for soldering mistakes b...

Page 11: ...of the board This is where the soldering becomes difficult the pads are very close to the traces and solder bridges are easier to make A small tipped soldering iron with a clean tip wipe it often on...

Page 12: ...ow here comes some more fun First check over all of your connections on the display board as well as the main board you sure wouldn t want to come this far to make a mistake Now it s time to join the...

Page 13: ...the solder pads on the main board Solder the display board pads flush with the main board pads Check to be sure the two boards are perpendicular and not tilted then solder all remaining pads Use enoug...

Page 14: ...blanking If the display never lights or is erratic consult the trouble shooting section of this manual and unhook the power immediately 4 Generate an M or a 6 on the touch tone phone for the master p...

Page 15: ...isplay board behind the displays Also check the interface between the two boards to make sure everything has been done correctly Second you may have a faulty display Since this is very unlikely check...

Page 16: ...d you will be churning out the projects that will even impress the experts Connecting a relay to a switched output Once connected to the relay the URC1 can turn a number of devices on and off such as...

Page 17: ...an also replace the level detection method by tying the wiper output to the high output To use the variable pots This is the simplest way of controlling signal levels such as volumes voltages powers e...

Page 18: ...of output provided here with the external world Building a Telephone Audio Tap Through this method the user can tap the DTMF tone off of a telephone line This is the simplest of methods to interface...

Page 19: ...s a master user using 6 Use your tone generator to set the devices you want to exclude from the user such as the alarm system Use the control codes in the rear of the manual for instructions 4 Set you...

Page 20: ...anding your kit for more control pots and outputs 0 1 2 3 4 5 6 7 8 9 A B C D Pin Name Description 1 GND Ground 2 GND Ground 3 LDS Load Shift Registers 5 CLK Serial Clock 6 GND Ground 7 DATA Serial Da...

Page 21: ...ot adjusted 0 10K 256 steps 14 L0 8 Pot 0 Low Not adjusted 0 10K 256 steps 15 H0 8 Pot 0 High Not adjusted 0 10K 256 steps 16 W0 8 Pot 0 Wiper 20 0 10K 256 steps 17 GND Common 0V 18 1 7 1 Output 617 5...

Page 22: ...ers This code replies with two shorts and a Long to indicate U Ex M123 Note that if no password has been set for either the last asterisk is left off To set the password To set the master password PM...

Page 23: ...To vary the level down L Level or 5 Level Press and hold the last asterisk to keep decreasing the level The level stops decreasing at a value of zero When it has reached zero the URC1 replies with a...

Page 24: ...mm hh tt ss mm hh Time off Time on tt indicates hundredths of a second ss indicates seconds mm indicates minutes and hh indicates hours Where Timer is 0 2 tt ss mm and hh are values from 00 99 Any val...

Page 25: ...is found on the chart with the pinouts of CON1 Since there is only 19 devices 0 18 any number over 18 is rejected and the command is aborted The URC1 replies with a short then long tone to indicate A...

Page 26: ...s only available to the master user The URC1 replies with a short then long tone to indicate A for acknowledge and then begins testing Done Accessing the URC1 D or 3 This command blanks out the displa...

Page 27: ...URC1 27 Password Master User Date URC 1234 M 6 5 94 1 Notes and Passwords Device Name User Mask Code for Access Notes Lamp 0 601 indicates 1 or 0...

Page 28: ...tly to the device you wish to control Use the look up tables on pages 20 and 21 to determine what wires go where Note that pin 1 and wire one are marked so that you don t get confused Expanding Notes...

Page 29: ...URC1 29 URC 1 PARTS LAYOUT DIAGRAM...

Page 30: ...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 be...

Page 31: ...RC1 UNIVERSAL REMOTE CONTROL KIT Printed on recycled paper REQUIRED TOOLS Soldering Iron Radio Shack RS64 2072 Thin Rosin Core Solder RS64 025 Needle Nose Pliers RS64 1844 Small Diagonal Cutters RS64...

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