2 days ago •
The audio was missing from part of the original Semifinal video, so here's the fixed one:
Here's the video of the Semifinal judging. It shows off the PSDR2 a little bit. Enjoy! There will be more info on that soon, now that I have met the judging requirements. Wish me luck!
P.S. Judges, I'm honored that you'll be taking some time to look at my humble project. I hope you like it!
Just in case it matters, here is the original video:
9 days ago •
Greetings! The wait for PCBs it killing me. They should get here this week (unless I am really unlucky) so I might have a day or two to assemble it, write enough code to do a demo, record it, edit it, and post it. And I thought my boss pushed me hard!
Anyway, I'll do what I can. In the mean time, I decided to work on the enclosure. I'm going for rugged, usable, and maybe a little cool looking, while keeping it manufacturable. What do you think? It is not done yet, but it's pretty close.
It's going to be a little thicker than I had hoped (but still less than 1") due to the encoder and LCD being too tall. I want to see if I can shave those down next time. I'd like to get it closer to 0.5" thick. The whole thing will be roughly the size of a deck of 3x5 flashcards.
I designed the PSDR2 to support three options for Morse code paddles, touch sensitive, normal (contact closure style), and external. What you see here is the normal style, because it's the hardest to build.
The big square to the right of the LCD is the GPS antenna. The longish hole along the bottom edge is for programming and debugging (the board will also be programmable via USB for people that aren't planning on doing any development). The other two holes along the bottom are for the speaker.
I have some ideas for some documentation I want to do as well. More on that later.
16 days ago •
Hi loyal minions! After quite the marathon of board layout, the PSDR2 PCBs are complete. I am trying dirtypcbs.com . They've got great prices for 4 layer boards and have reasonably priced rush/fast shipping options. Though I was sad to learn that I can't get a red board with gold plating AND rush the order... Red was going to look really good, but it doesn't look like that's going to happen for the first batch of PSDR2s.
Anyway! I'm glad I pushed so hard to get these out. I might just have something cool to show off by the end of the month.
I'm pretty happy with the layout, but I didn't have time to give it some of the polish that I usually like to. Routing for the power traces isn't ideal, and I didn't bother with proper impedance considerations..... I think it will be okay.
So I generally try to do something new on each PCB I produce, if I can. This time it's a bunch of new components, a new fab house, and you'll notice that I left off pretty much all of the reference designators so I'd have room to label the circuit blocks. I think it's pretty neat, but it's going to mean that I'll have to prepare well illustrated assembly diagrams. What do you guys think? How important are reference designators really?
Speaking of assembly, there are a few parts that will pretty much have to be installed with a hot air pencil or a reflow oven, I really tried to make it possible to assembly without those, but some of the parts aren't available in any other package.