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Ramsey Electronics URC1 Owner's Manual

Ramsey owner's manual universal remote control urc1
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UNIVERSAL REMOTE
CONTROL
Ramsey Electronics Model No.
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!
URC1 • 1
URC1

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Summary of Contents for Ramsey Electronics URC1

  • Page 1 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...

  • Page 2: Urc1 Universal Remote Control

    COPYRIGHT 1993 by Ramsey Electronics, Inc. 793 Canning Parkway, 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. URC1 • 2...

  • Page 3: Table Of Contents

    AND INSTRUCTION MANUAL FOR URC1 UNIVERSAL REMOTE CONTROL TABLE OF CONTENTS Introduction to the URC1 ... 4 How it works ... 5 Tips and Notes ... 6 Parts list ... 7 URC1 Assembly instructions ... 8 Initial testing ...14 Troubleshooting tips ...15 Hints and Using ...16...

  • Page 4: Introduction To The Urc1

    Add our matching case and knob set for a finished "pro-look." INTRODUCTION TO THE RAMSEY URC1: The Ramsey URC1 is a microprocessor controlled remote control that uses DTMF for turning voltage levels up and down, pots up and down, timers on and off, and outputs on and off.
  • Page 5 HOW THE URC1 WORKS: Take a look at the URC1's schematic diagram as we walk through the circuit. As you can see there is not much to the universal remote control, most of the work is internal to the IC's.

  • Page 6: Tips And Notes

    Take a look at the parts layout diagram, there is quite a lot to the construction of the URC1. It's easier than it seems once you get going, and after you have placed a few of the "landmark" components. Other part's positions are referenced to them, and construction goes quite smoothly.

  • Page 7: Parts List

    RAMSEY URC1 PARTS LIST: SEMICONDUCTORS 1 7805 5 volt power regulator (VR1) 1 145436 (or MC145436) 14 pin dip DTMF decoder IC (U5) 1 68HC705J2 20 pin dip pre-programmed microcontroller (white sticker marked URC-1) (U6) 1 MAX7219 24 pin dip 8 digit display driver (U2)

  • Page 8: Urc1 Assembly Instructions

    7. Install the 20 pin IC socket where U6 is to go, the microcontroller IC with the sticker marked URC1. Gently insert the U6 into the socket noting where pin 1 is. Pay close attention to the orientation of the tab on this part.
  • Page 9 18. Install R2, a 10K ohm resistor (brown-black-orange). 19. Install C8, a .1uF ceramic capacitor (marked .1 or 104). This causes the microcontroller to reset properly on power up. URC1 • 9...
  • Page 10 33. Install R5, a 47K ohm resistor (yellow-violet-orange). 34. Install R6, another 47K ohm resistor (yellow-violet-orange). 35. Install R7, yet another 47K ohm resistor (yellow-violet-orange). The two preceding transistors and these three resistors assist the URC1 in URC1 • 10 7805...
  • Page 11 38. Install D6 one of the red LEDs. Notice the longer of the two leads on the LED, this is the lead that is installed towards the displays. 39. Install D2, the other red LED. Also notice that it is installed with the longer lead towards the displays. URC1 • 11...
  • Page 12 Use the notches to align the display board with the main board, note how the display board is mounted with the displays facing away from the main board. Display C O N 1 & 2 Support wire Solder Main fillet board URC1 • 12...
  • Page 13 Dis play PC board 44. A last minute addition: Install J2, the DC power jack. This is where the 7-15VDC will be applied upon power up. URC1 • 13 Main PC boar d Solder f illet betw een PC boar ds...

  • Page 14: Initial Testing

    2. Connect the audio source with the DTMF tones to J1 of your kit. 3. Apply power to your URC1. Make sure that the center connector of the jack you use is POSITIVE. On first time power up the memory is cleared out, and so are the passwords.

  • Page 15: Troubleshooting Tips

    SOLUTION: More than likely this is an assembly error, usually solder bridges or cold solder joints surrounding CON1 and CON2. A fine tip soldering iron and solder wick will help you to remedy these problems, as well as patience and good troubleshooting skills. URC1 • 15...

  • Page 16: Setup

    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 home security systems, lights, answering machine, lawn watering system, swimming pool filters, etc. Be sure the coil on the relay has a resistance of no less than 100 ohms to be safe.
  • Page 17 If you are worried about the common on the unit to be controlled not being isolated, run the URC1 off of an isolated power supply. Using this method should protect the URC1 from damage from grounding errors.
  • Page 18 Vout =5*(1 + R2/R1) There are plenty of ways to use the outputs of the URC1 to control different circuits, devices, and run equipment. These basic ideas given will get you started on developing your own remote control system. If you want more ideas or more detail on how to hook up these circuits, consult some of the electronics magazines available at the supermarket, or go to your local library.

  • Page 19: Setup

    We will start from very first power up, all the way to leaving the URC1 to do it’s stuff. If you are interested in more details about the codes used refer to the the section on URC1 command codes.

  • Page 20: Charts And Diagrams

    Note: This jack is not used unless you plan on expanding your kit for more control pots and outputs. Description Ground Ground Load Shift Registers Serial Clock Ground Serial Data Ground Load Pots Ground Pots Serial Out Shift Registers Out URC1 • 20...
  • Page 21 *602? Output *611? Output *601? Output *610? Tone out *600? Common URC1 • 21 Range 0-5V, 256 steps 0-5V, 256 steps 0-5V, 256 steps 0-5V, 256 steps 10mS to 40H 10mS to 40H 10mS to 40H 5V on off 5V on off...

  • Page 22: Control Codes

    URC1 Control Codes: The codes on the URC1 are very simple to use as well as comprehensive. Codes have been laid out so that the letters on a touch tone phone represent the action that you desire. Note that all codes begin with an asterisk. This was done to prevent the normal dialing of a phone or some other device from accessing the unit.
  • Page 23 To vary the level up: Press and hold the pound sign to keep increasing the level. The level stops at a value of 255. When it has reached 255, the URC1 replies with a short then long tone to indicate “A” for acknowledge.
  • Page 24 Press and hold the last asterisk to keep decreasing the resistance. The resistance stops decreasing at a value of zero (near zero ohms). The URC1 replies with a short then long tone when at zero to indicate “A” for acknowledge.
  • Page 25 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” for acknowledge. Example to turn timer 2 off from the user:...
  • Page 26 The URC1 replies with two longs then a short tone to indicate “G” for goodbye. Other tones: The URC1 will return a long then short tone to indicate an error in entry such as password protected, numbers that are too large, and accidental keystrokes during entry of a code.

  • Page 27: Notes And Passwords

    Notes and Passwords: Password Master/User Date URC # 1234 6-5-94 Device Name User Mask # Code for Access Notes Lamp *601? ? indicates 1 or 0 URC1 • 27...

  • Page 28: Connector Considerations

    Expanding Notes: If you decide to expand your URC1 to take full advantage of the number of outputs it may control, notice how almost all of the chips in this kit are serially accessed. They all work in much the same way as a serial latching shift register, so all that needs to be done is to cascade the devices.

  • Page 29: Schematic Diagram

    URC-1 PARTS LAYOUT DIAGRAM URC1 • 29...
  • Page 30 '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.

  • Page 31: Schematic Diagram

    URC1 UNIVERSAL REMOTE CONTROL Quick Reference Page Guide Introduction to the URC1 ... 4 Parts list ... 7 URC1 Assembly instructions ... 8 Initial testing ... 14 Troubleshooting tips ... 15 Setup ... 19 Notes and passwords ... 27 Connector Considerations ... 28 Schematic diagram ...

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