06/24/2017 at 22:25 •
In homage to hackaday...
06/24/2017 at 21:45 •
I got my parts and boards earlier in the week, but hadn't had a chance to build and test them till today. I learned a few valuable lessons, like I learned that you need to tin the ground pad that lies under the coin cell holders, otherwise the battery won't make contact with the pad. I also had the wrong size soic footprint. I was using the skinny 3.9mm footprint when I actually needed the wide 5.3mm package. Oh well, live and learn. I already made the package changes to the latest rev in github. For now all I did was squeeze the pins closer to the ic body so that they would make contact with the footprint.
Here's what the finished board looks like:
and of course hello world seemed appropriate...
06/13/2017 at 14:59 •
PCB's have been ordered, so I'm hoping to have the first version built in a week or so. I made some small changes to the original design. One was swapping out the SOD523 package blocking diodes for a little larger SOD323 schottky. The advantage of this is it'll be easier for people who want to hand solder these to do so. Between the low parts count and the larger 0805 surface mount parts, I'm hoping these might be a good candidate project for people who want to practice surface mount soldering.