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There are two ways to connect Morse key to PC. Famous and Easy one is buy a DB9 to USB
converter and connect it to PC and second one is to hack the optical mouse (Homebrewed).
Optical mouse are easily available and are very cheap (₹ 65 or even less) as compared to
DB9 to USB converter. Moreover, optical mouse are easily available everywhere.
CONNECTING MORSE KEY TO PC
USING AN OPTICAL USB MOUSE
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TABLE OF CONTENTS
1. Tools & Material required- ............................................................................................................... 0
2. Stepwise Procedure- ...................................................................................................................... 2
Step 1- ............................................................................................................................................... 2
Step 2- ............................................................................................................................................... 2
Step 3- ............................................................................................................................................... 3
Step 4- ............................................................................................................................................... 3
Step 5- ............................................................................................................................................... 4
Step 6- ............................................................................................................................................... 5
3. Some tips- ...................................................................................................................................... 6
4. My Contact info-.............................................................................................................................. 7
5. Reference ....................................................................................................................................... 8
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ACKNOWLEDGEMENT
I would like to take this opportunity to express my profound gratitude and deep regards to
my guide Mr. Om Kaustav Saha (VU2UUU) for his exemplary guidance, monitoring and
constant encouragement.
I am obliged to Physics lab assistant (G D Goenka University) Mr. Neeraj Kumar Singh
for bringing Morse Key from Faridabad for me.
Everyone is free to Edit, Share and use this document in any way they want to.
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1. TOOLS & MATERIAL REQUIRED-
TOOLS REQUIRED –
1. Wire Cutter & Stripper
2. Soldering Iron
3. Screw Driver
4. Scissor / Blade
5. Multimeter
MATERIAL REQUIRED-
1. Soldering Wire
2. USB Mouse
3. Bread Board
4. Electrical Tape / Duct Tape
5. Multipurpose P.C.B.
6. Two L.E.D’s (Optional)
7. Resistor 12 (Optional)
8. Morse Key
9. Sticky Note
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2. STEPWISE PROCEDURE-
Step 1-
Buy a new mouse or find an old one which has at least a single button working (Right or left button).
Step 2-
Open the mouse carefully separate bottom part, top part and the circuit (PCB).
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Step 3-
Locate micro-buttons on the PCB (Generally they are located in front side of the mouse)
Also locate the red colored LED.
Step 4-
Connect 3 wires
1. On one terminal of the micro button
2. One to another terminal of the micro button
3. On Positive terminal of the red light
1
2
1. Micro Button
2. Red Led
22
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Step 5-
Close the mouse carefully and screw back it.
Now connect the mouse to your PC
Connect wires 1 and 3 (from terminal of micro-button) if you can see the left click menu, it is working.
1 2
3
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Step 6-
You may connect a small circuit with 2 LED’s and a resistor in series and connect it with wire from
positive terminal of red mouse LED.
Connect Negative terminal of micro-button with common (C) in morse key.
Connect other wire from micro-button to normally open (NO) of the morse key.
Connect the negative wire from LED circuit to normally closed (NC) of the morse key.
NC NO
C
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3. SOME TIPS-
1. You can use central click button too if both left and right buttons aren’t working.
2. Connecting 2 LED’s externally is optional.
3. Make sure you stick a sticky Note or some non-transparent tape or some paper under the mouse so
that the cursor freezes and does not move. 4 .You may use bread board before making permanent connections.
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4. MY CONTACT INFO-
Parvesh Taneja
Email: [email protected]
Phone: +91-124-4140640
Mobile: +91-8527311085
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5. REFERENCE
S. No. Reference(Links)
1. http://kob.sdf.org/morsekob/interface.htm
2. http://kob.sdf.org/morsekob/morsekob25/tutorial.htm#AppendixC
3. http://ham.stackexchange.com/questions/1256/using-a-morse-code-key-with-a-
computer?newreg=9ec1af0a078c4ab7901923c9f854c2d0#
4. http://electronicszone-shiharan.blogspot.in/2013/07/inside-optical-mouse.html
5. https://www.reddit.com/r/HamRadio/
6. https://sites.google.com/site/gw6itj/morse-code/pc-cw-keyer
7. Cover Image-- https://scontent.cdninstagram.com/hphotos-xtf1/t51.2885-
15/s640x640/sh0.08/e35/11910417_533257670171896_1832531749_n.jpg