After the vintage radio exhibition, I decided to make a paddle key by myself. Becuase normally all the paddle keys are quite expensive on the internet. I did not want to spend that much money to buy a paddle key while I can build one by myself.
I designed the case through Autodesk Inventor in about 45 minutes. I considered where the keys, electric lines, and hinges will go too.
This is the case I made. Since there were a few holes in the model,
it had to go into a some kind of chemical bath to melt supporting materials.
This is the final result I have.
The input is audio jack.
I could not test this yet. Because the HAM radio shack is closed for this week. Thus, I cannot test this yet. I tried to do it with my Surface Pro 3, but it seems not working. When I tested the unit with a multimeter, I confirmed that the electricities flow the lines and paddle key perfectly.