User's Manual

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RR1 • 1

Ramsey Electronics Model No. RR1

Have you ever been so frustrated with the range of your remote

that you go to the extreme of rearranging your entertainment

room just to make it work? Tired of having to bounce your IR

remote off of ceilings and walls? Do you want to run your

system from another room? Here is the answer to your prayers!

Extend the range of your remote controls as far as you need;

it’s only limited by the length of wire you use!

• IR receiver module with sensitive element can receive your

remote control up to 36 feet away before re-broadcasting it.

• The RR1 reconstitutes the receive signal using a PIC micro

controller, restores noisy or weak signals, and then re-broadcasts

the IR remote signals to your components via a long wire (tested

over 500 feet!) to a high-efficiency IR LED.

• Extend the range of your remote control around corners or down

floors by running a wire to an IR LED in front of the components

you wish to control.

• Works with almost any remote control (38 kHz carrier), does not

need to be programmed.

• Will operate from 8V to 16V AC or DC. Use our AC125 wall adapter

for long operation.

• LED indicator lets you know when you are receiving an IR signal

or not.

Summary of content (20 pages)

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Ramsey Electronics Model No.
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RAMSEY TRANSMITTER KITS • FM100B Professional FM Stereo Transmitter • FM25B Synthesized Stereo FM Transmitter • MR6 Model Rocket Tracking Transmitter • TV6 Television Transmitter • RR1 Wired Remote Repeated • RRW1 Wireless Remote Repeater RAMSEY RECEIVER KITS • FR1 FM Broadcast Receiver • AR1 Aircraft Band Receiver • SR2 Shortwave Receiver • SC1 Shortwave Converter RAMSEY HOBBY KITS • SG7 Personal Speed Radar • SS70A Speech Scrambler • BS1 “Bullshooter” Digital Voice Storage Unit • AVS10 Automatic Sequentia
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Ramsey Publication No. MRR1 Price $5.00 KIT ASSEMBLY AND INSTRUCTION MANUAL FOR RR1 REMOTE REPEATER KIT TABLE OF CONTENTS Introduction ...........................................4 Theory of Operation ..............................5 Learn As You Build Strategy .................7 Parts List ...............................................9 Assembly Instructions .........................10 Testing the RR1 ..................................13 Using your RR1 ...................................
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RR1 INTRODUCTION Welcome to the RR1 kit (and if you don’t have the time, the wired and tested version). Let’s take a moment to help you understand the basic workings of IR remote controls and how the RR1 works. This will better help you understand what you are about to build. As simple as it may look, the RR1 is one of the best remote repeaters money can buy thanks to some specialized technology we have added to restore normally unusable signals.
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RR1 THEORY OF OPERATION The RR1 may look simple but there is actually quite a lot being done inside each one of the parts. Many individual components are packed inside of the IR receiver part (U2) itself; so many in fact that if it was built up with discrete components, it would never fit in this little kit case. Inside of the part there is an IR detector diode, amplifier, AGC circuit, bandpass filter, a peak-hold circuit, an integrator, comparators, and an output amplifier.
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of the one second time frame (0.60 seconds total of the entire second). For a logical zero, the LED will still be switched on and off at a rate of 38 kHz, but this time only for 30% of the total time (0.30 seconds total of the entire second). When the IR detector “sees” a 38 kHz IR signal, the output of the detector goes low (it is inverted). Conversely when there is no 38 kHz carrier signal present, the output idles high.
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RAMSEY “LEARN-AS-YOU-BUILD” ASSEMBLY STRATEGY Be sure to read through all of the steps and check the boxes as you go to be sure you didn't miss any important ones. Although you may be in a hurry to see the end results, before you switch on the power be sure to check all wiring and components (especially capacitors) for proper orientation. Also check the board for any possible solder shorts and/or cold solder joints.
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This project will not work as well as you may wish if you just slap it together without following good assembly techniques and all of the instructions. No matter how clear we may think our manual is, if you have any questions give us a call at the factory instead of jumping to conclusions. We will be happy to help you with any problems may run into. It is always good practice to mount the parts AS LOW AS POSSIBLE to the board.
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PARTS SUPPLIED WITH YOUR RR1 KIT Capacitors 3 0.1 uF ceramic capacitors (marked .
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RR1 REMOTE REPEATER KIT ASSEMBLY Assembly of the RR1 is straight forward but it does require some time and patience. To get our bearings, we will start with mounting the power jack and move on from there. It serves as a good reference point for the other parts. 1. Install J3, the 2.1 mm power jack. Be sure to get a good, solid connection to all three pads as this will have to take some mechanical strain during normal use. Use ample solder without going overboard. 2.
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10. Install J2, the 2-pin header. It is a tight fit so make sure the pins are through the holes before trying to solder them. 11. Install C4, a 0.1 uF ceramic capacitor (marked .1 or 104 or 100 nF). 12. Install R3, a 220 ohm resistor (red-red-brown). 13. Install C5, a 10 uF electrolytic capacitor. Again check orientation before soldering into place. 14. Install VR1, the 78L05 voltage regulator.
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Wow that was fast! 20 steps for something as neat as this may not seem like a lot, but we are almost done building the kit! Take a moment to go back through the steps you’ve completed and check the orientation of all the installed devices before plugging in the power. This will help you to avoid damaging any critical components by accident when you fire-it-up the first time (note: we are trying to avoid the “fire” in fire-it-up).
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TESTING THE RR1 To begin testing the RR1 we will need the following items: AC power supply (6 to 12VAC) or DC power supply (8 to 14VDC). A known functional IR remote control. A mating piece of equipment that the remote control works with. Begin by positioning the IR LED in front of the equipment you intend to control. To hold the IR LED in place, try using a piece of electrical tape.
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USING THE RR1 The beautiful thing about it is that there really is no secret to using the RR1. The only option you may need to change is the jumper configuration of J2, the ‘Data Restore’ enable header. By default, leave the jumper header ’IN’ or on the pins. This will tell the micro-controller to automatically correct any errant IR data that is received. Should you have trouble with some remotes, simply remove the jumper for straight through operation.
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TROUBLESHOOTING GUIDE PROBLEM: The green LED doesn’t light up when I aim my remote at it. SOLUTION: There are a few things that can go wrong here so we will go through the possibilities in order of there likelihood: 1. You forgot to turn on the power, or your DC adapter isn’t compatible (the polarity is reversed). 2. You installed the green LED in backwards. Please check the orientation. We’ve all done it at one time or another! 3. The battery in your remote control is shot. Replace the battery and re-try.
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RR1 • 16
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RR1 PARTS PLACEMENT DIAGRAM RR1 • 17
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RR1 SPECIFICATIONS: There are only a few specifications that need to be documented for this particular product. Please note that these are subject to change. Power Supply: • • • AC power supply = 6 to 12 VAC @ 100 mA or DC power supply = 8 to 16 VDC @ 100 mA (Positive tip plug) Current draw with a 12VDC source averages: ⇒ 7 mA Standby Mode ⇒ 16 mA Active IR Data Re-transmitting Dimensions: • PCB size: 4.0” x 4.
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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.
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RR1 REMOTE REPEATER KIT Quick Reference Page Guide Introduction ..........................................4 Theory of Operation ..............................5 Parts List ...............................................9 Assembly Instructions .........................10 Testing the RR1 ..................................13 Using your RR1 ...................................14 RR1 Schematic ...................................16 Specifications ......................................18 Warranty ...................