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 syst...
Urc1 • 2 ramsey transmitter kits • fm100 professional fm stereo transmitter • fm25 synthesized stereo transmitter • am1, am25 am transmitters • tv6 television transmitter ramsey receiver kits • fr1 fm broadcast receiver • ar1 aircraft band receiver • sr2 shortwave receiver • aa7 active antenna • sc1...
Urc1 • 3 urc1 universal remote control ramsey publication no. Murc1 price $5.00 table of contents introduction to the urc1 ........................ 4 how it works ........................................... 5 tips and notes ....................................... 6 parts list ..........................
Urc1 • 4 urc1 remote control features: • six digit display for long codes • fast dtmf decoding time for fast automatic phone dialers • sensitive audio input for faint tones • tone feedback for confirmation of commands • accurate decoding, rejects dial tones and normal audio • small size, runs on 7 t...
Urc1 • 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. The real heart of the circuit is u6 the microcontroller ic. This 20 pin ic can perform ...
Urc1 • 6 "the ramsey learn as you build assembly strategy" 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 ...
Urc1 • 7 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) 1 max500 quad serial dig...
Urc1 • 8 construction of the urc1: the first thing we will do with this kit is check all of our parts and pieces to make sure we have them all. Use the parts list and your layout diagram to do this. If there are any differences, make sure the schematic agrees with what you have, and also be aware of...
Urc1 • 9 8. Install u4, the dual digitally controlled potentiometer (marked ds1267). Pay close attention again to the orientation of this part. This part as you will notice controls the position of the wiper on a 10k pot, and has very good linearity. 9. Install u3, one of the 74hc595 serial shift re...
Urc1 • 10 20. Install c9, a 470pf ceramic capacitor (marked 470 or 471). 21. Install vr1, the 7805 regulator into the the three holes provided in the board. The metallic portion of the regulator should face towards the tabbed side of the board. Gently bend the regulator over until the hole in the ta...
Urc1 • 11 shutting itself down during a power down. They then allow the battery to take over memory retention of the data in the microcontroller. Now here comes the fun! Take your time on the next stages as they can make or break your kit. Don't be a bozo and rush assembly to get it done, hook it up...
Urc1 • 12 locate the main board again and we will finish it up. 40. Install con2, the thirteen pin connector. Insert it in the holes as shown in the diagram, making sure that the leads point to the back of the board. 41. Install con1, the 34 pin connector using the same procedure as before. This con...
Urc1 • 13 43. The display board mounts at a right angle to the main board with solder pads providing both mechanical support and electrical connection between the two boards. The display board is placed against the main board so that the solder pads on the display board line up with the solder pads ...
Urc1 • 14 congratulations you have just finished the entire urc1 kit! Now all that we have to do is some initial testing and setup. Initial testing: to begin our initial tests, we need a few missing pieces to complete the whole remote control system. These are: ❍ a radio, or a dtmf dialer or generat...
Urc1 • 15 troubleshooting tips: problem: none of the displays light, vr1 regulator gets hot fast. Solution: you likely have a short across the power supply or you have a component placed in the incorrect orientation. Check all of your parts to make sure they correlate with those in the parts layout ...
Urc1 • 16 problem: the thing just doesn't work! It must be the engineer's fault! Solution: we make absolutely sure that our products work beyond expectations before the kits leave our doors. If you can't solve the problem, send in the kit, if it's our fault the fix charge is free. Read the warranty ...
Urc1 • 17 place of the pot presently in a circuit with this method of squelching. Also good in voltage divider networks, and current controls. Notice other versions of these opto-isolators can be used to isolate the switched outputs also. The other method of squelch control uses the quieting phenome...
Urc1 • 18 change voltage output levels as well as current ratings. Note with larger currents that you should provide a heat sink on q1. To change the maximum voltage output, use the formula: vout =5*(1 + r2/r1) there are plenty of ways to use the outputs of the urc1 to control different circuits, de...
Urc1 • 19 setting up the urc1: these are some general ideas for setting up the urc1 for either a multiple user remote control, or a protected mode of operation. 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 c...
Urc1 • 20 charts and diagrams: display conventions: pinouts of con2: note: this jack is not used unless you plan on expanding 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 g...
Urc1 • 21 this is a table showing the signal available at each pin of con1, the access number for which the pin is accessed and changed, the group number for disabling and enabling, description, name, and range of output. “?” indicates a variable number. Pin # name device # description access # rang...
Urc1 • 22 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 p...
Urc1 • 23 to turn an output off: *0{output set #}{output #}0 or *6{output set #}{output #}0 this code replies with a short then long tone to indicate “a” for acknowledge. Note that the last one or zero denotes on and off respectfully. Note there is only eight output sets (0-7) and eight outputs per ...
Urc1 • 24 where 2 is the command code, 1 is the device code, and 192 is the value. To vary the resistance down: *c{level #}* or *2{level #}* 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 ...
Urc1 • 25 to set timer1 on for 35 hours 12seconds, and off fore 10ms: *8101*00120035 hook up some leds as shown with series resistors to the timer outputs, and then experiment a bit to see how this method works. Have patience as these codes take a little time to get used to. For the master user to e...
Urc1 • 26 note that this command can be dangerous as it clears out everything, passwords as well as output settings. This command will only work if you’re entered as a master user. The urc1 replies with a short then long tone to indicate “a” for acknowledge. Testing the urc1: *00ts or *0087 this com...
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
Urc1 • 28 connector considerations : upon design of this kit we determined that we would use standard size connectors for interface. We ended up using connector cables from pcs to determine what sizes you may have laying around at home, or available at the local electronics store. Connector 1 uses a...
Urc1 • 29 urc-1 parts layout diagram.
Urc1 • 30 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 to! All ramsey kits will work if assembled ...
Urc1 • 31 urc1 universal remote control quick reference page guide introduction to the urc1 ...................................... 4 parts list ............................................................... 7 urc1 assembly instructions ................................ 8 initial testing ...............
