Wednesday, July 18th
ARRL Exam Session begins at 5:30pm
Meeting at 7:00pm
Entrances to the EOC room is located at the back of the building.
- Field day results.
- Repeater updates.
Upcoming topics (Subject to change):
Repeaters: 146.700- Mhz | 146.970- Mhz | 443.700+ Mhz | 445.075- Mhz | PL: 100 hz
Capacitive Touch morse code paddle using an ATTiny4 – (126 Bytes)
I (Edgar/KC2UEZ) am a ham radio operator. I like building antennas, experimenting with digital modes, and operating SDRs. Like many no-code operators, after being on the air for a while, I developed an interest and appreciation for Morse Code. I started to learn CW by using http://LCWO.net. I purchased a cheap paddle, but I found the clicking noise a little bit annoying. At this moment, I decided that I wanted to create a noise-free way to send Morse Code.
While I was able to find a few touch paddles (without moving parts) that I could purchase, I ultimately decided to make my own. I saw this project as an opportunity to do some hacking and to learn something new along the way.
While researching capacitive touch online, I came across this Arduino playground post: http://playground.arduino.cc/Code/CapacitiveSensor. To get my project underway I modified the code to implement the paddle logic and loaded it into an Arduino. The code reads two input pins. If touch is detected by the micro-controller, the Arduino outputs two signals to toggle the transistors, which simulates a closed circuit, similar to that of a mechanical paddle. The closed circuit enables the radio to create the DIT and DAH tones. The under 1kB binary code worked well and without error. This made me wonder how small I could make this code. After optimizing the code, I managed to shrink it to under 512 bytes.
Tryon ARC has created a list of suggested frequencies for the 2m band. Feel free to program these frequencies and use them. Those frequencies have good coverage for the Fulton and Montgomery counties. If you have any corrections or have other frequency suggestions feel free to post it below or on our facebook page.
The frequency list can also be found on the ARES/RACES page with the manuals for the radios FT2800 and IC718 which are the radios in the EOC radio room.
The Tryon ARC would like to let all our members know about the NY QSO Party. Here is the bulletin sent by Dean, NW2K regarding this event:
It’s all about NY on October 15 as radio amateurs from around the world get on the air to work all 62 NY counties, Chautauqua to Clinton, Niagara to Suffolk. A dozen or more mobile operators will take to the mean streets of NYC or the bucolic surrounds of the Southern Tier and North Country. Brave souls will sneak out to the woodlands to activate a rare county, Field Day style, as temps may dip into the 30’s. And good, solid Elmers will open up their shacks to new hams and build excitement as the spotlight is on US!
Here is the net script to use on our monthly HF net. Please familiarize yourself with it and use if you are Net Control or Alternate Net Control. We have had a low turn out on this net since it’s inception a few months back. If you can, please check in, it is a great way to test your HF station for any issues that you may not be aware of like antennas, audio, microphone, radio, etc… The net is not a long net and if you can get into this net, you are better prepared in case you need to help out on the NY State RACES net which is every Sunday morning at 9am on 3.993.5 (http://www.dhses.ny.gov/oiec/races/racesnets.cfm).
Thank you Rocco Conte Wu2m and Steve Kuck K2ALS for this script.