The Goertzel algorithm is used to detect the presence of a tone of a specific frequency. It doesn't decode the dit's and dah's, instead it converts the input into tone / no-tone signals which then must be further processed to identify dit's dah's and letters. What the use of the Goertzel algorithm saves is the need for input hardware such as a notch filter that would a specific tone and convert it to a logic level. For this program the tone that it selects can be set to 496, 558, 744 or 992 hz. You would then set your beat frequency so that the signal you want to decode is centered on one of the pre-selected frequencies. If there happened to be other signals in the neighborhood, then the Goertzel algorithm would reject them. So it is replacing a bit of analog hardware (A filter) with a digital signal processing algorithm run inside of the atmel chip.
How do you wire up this circuit? Is there a wiring diagram to do this properly? Also could you provide a schematic diagram for this circuit? I could not find a schematic for this, and it's not even available on the internet. I see the sketch, but no wiring or schematic diagram to build this.
OK, so... ignoring the vast bulk of the content (which was fine, it's just not what I'm asking about): Are you a (fellow) fan of Tom Tykwer and/or in particular the film Run Lola Run? And/or what other inspiration(s) did you get for doing your credits roll top-to-bottom? :) But yeah, neat circuit! Thanks for sharing that!
Now you're talking, or dit and dah ing. That is a very cool project. But I'm still waiting for the Arduino controlled robot arm to get finished! ;-} Thanks for the video looking forward to "the rest of the story"!
Can you use this for CW qualification in Ham radio? I want to get back into it after my experience in the late 70's. I have a Heathkit Apache transmitter, and would look for a Mojave Reciever if I could get passed the Morse code requirement. If only to provide emergency radio service in time of a catastrophe.
Yep, Digger D is correct. Morse code is no longer a requirement to get a ham license in the US. For technician and general it is just a 35 question multiple choice quiz and for amateur extra there are 50 questions. A little basic knowledge of electronics and a quick study of operating procedures and the technician exam is very easy.
The Goertzel algorithm is used to detect the presence of a tone of a specific frequency. It doesn't decode the dit's and dah's, instead it converts the input into tone / no-tone signals which then must be further processed to identify dit's dah's and letters. What the use of the Goertzel algorithm saves is the need for input hardware such as a notch filter that would a specific tone and convert it to a logic level. For this program the tone that it selects can be set to 496, 558, 744 or 992 hz. You would then set your beat frequency so that the signal you want to decode is centered on one of the pre-selected frequencies. If there happened to be other signals in the neighborhood, then the Goertzel algorithm would reject them. So it is replacing a bit of analog hardware (A filter) with a digital signal processing algorithm run inside of the atmel chip.
Nice! Thanks
Sharing knowledge that is really useful. This person need more subscriber.
Cool project and good explanation of the voltage divider as a changed voltage reference so it plays nicely with the Arduino
That looks a fun project, thank you for sharing
Looks like a cool little project. I'm looking forward to part two. Thanks as always Paul.
Is there any part two ?
I did something similar on my U Bitx radio, so it displays the cW on the screen. I used a nano tho. Works pretty good
How do you wire up this circuit? Is there a wiring diagram to do this properly? Also could you provide a schematic diagram for this circuit? I could not find a schematic for this, and it's not even available on the internet. I see the sketch, but no wiring or schematic diagram to build this.
I'm over 4 years late, but did you get to creating the Morse encoder, to generate Morse signals? We need that for a project we're working on.
Fun project. Thumb up ! and you deserve more subscribers. Have a good day (from France) ;)
Thank you
Haven’t copied any CW in a while, cool project.
Thanks
OK, so... ignoring the vast bulk of the content (which was fine, it's just not what I'm asking about): Are you a (fellow) fan of Tom Tykwer and/or in particular the film Run Lola Run? And/or what other inspiration(s) did you get for doing your credits roll top-to-bottom? :)
But yeah, neat circuit! Thanks for sharing that!
Hello, I need a project like this. Can you share your code?
Great work!
Thanks Paul.
Back on more familiar ground today Paul? Always enjoy a wee bit of arduino magic!
Thanks. I enjoy playing with my radio, but all the antenna calculations are why I avoided RF work in my career.
Now you're talking, or dit and dah ing. That is a very cool project. But I'm still waiting for the Arduino controlled robot arm to get finished! ;-} Thanks for the video looking forward to "the rest of the story"!
What all components have been used to make this project?
Can you please tell me the sketch?
Can you use this for CW qualification in Ham radio? I want to get back into it after my experience in the late 70's. I have a Heathkit Apache transmitter, and would look for a Mojave Reciever if I could get passed the Morse code requirement. If only to provide emergency radio service in time of a catastrophe.
Yep, Digger D is correct. Morse code is no longer a requirement to get a ham license in the US. For technician and general it is just a 35 question multiple choice quiz and for amateur extra there are 50 questions.
A little basic knowledge of electronics and a quick study of operating procedures and the technician exam is very easy.
I WOULD CERTAINLY LIKE TO SEE THE CODE
Nice! :). This ia a project as they should be.
Good job!
That 1/8" plug looks to be stereo. Could that be a problem?
Just connect signal to tip, ground to sleeve and leave ring open
Wouldn't it be better to get a rig that decodes International code? I thought actual Morse code wasn't used anymore?
Very nice project. I want to make but arduino code link is dead. I need code :( Please share me codes. Thank you for help.
keep up the good work. I learned a lot N8DLI
You r awesome!
love it.
Hai this 9W2MSS. Can your share me the program code
That is cool.