That is a fine example of ingenuity there! Soldering the .5mm pitch parts has not been a problem. I just do an inspection of the edges of the part after they are reflowed. I had one part have a solder bridge that I cleared up by running the soldering iron across the edge of the part and draging away. I have a bit extra on the pads that is exposed that allows me to do this.
Thanks! I have a home made hot air toll that I use. It takes a few minutes to heat up but works pretty well. I have also found Chip Quik Fluz to be invaluable. I'm going to try doing some .5mm pitch parts soon. Thanks!.
Sorry for the late response, I have been recovering for a lot of travel. The soldering I do with a hot air rework tool. Because the boards are so small, they reflow almost the entire board at once. It really works pretty well. I am in the process of converting a toaster oven, but I have to get through a few other things first.
On the design rules. OSHPark really can do down to their 6/6 spacing. They can even do smaller, they have margin built in, but do not expect to have 100% yields at a lower spacing.
I've been using OSHpark (previously Dorkbot/Laen PCB) for several years. The price and turn around time is pretty darn good. Being 'down under', affordable fab houses are non existant. I couldn't find anyone who could come close with my design's requirements - 4 layer, 5/5mil track/spaces, 4mil annulars and 10mil holes.
Their prices are unbeatable if you want lots of boards too.
Yeah, I find the small boards a nice challenge. I love trying to fit everything on them that needs to get there. What is your current project that you are doing that is that small? I would love to hear about it.
On the KL02, I am just exploring being able to use it. Once I find a way to do it, then I will find what to do with it ;)
I agree about how much easier board building has gotten. I'd never use some of these quick and dirty techniques when I'm on a strict timeline, but it has really opened up pathways to build quick, 'usually' reliable prototypes.
If you want to play with the KL02 microcontroller, the evaluation board only costs U$12.96 at DigiKey.
The 3x3mm QFN-16 package wouldn't fit on your 0.38"x0.38" board?
Like you, I design very small boards. My current project is only 0.29" x 0.31", and has parts on both sides. It's easy and fun to design these projects, but what a pain to build and test and debug something that tiny!
Drones are, in essence, flying autonomous vehicles. Pros and cons surrounding drones today might well foreshadow the debate over the development of self-driving cars. In the context of a strongly regulated aviation industry, "self-flying" drones pose a fresh challenge. How safe is it to fly drones in different environments? Should drones be required for visual line of sight – as are piloted airplanes? Join EE Times' Junko Yoshida as she moderates a panel of drone experts.