Screaming Circuits: March 2010

PROTOTYPE AND SMALL VOLUME
PCB ASSEMBLY MADE EASY

DB25 - Survey Says...

I've gotten a number of answers to my question: "What's wrong with this picture?" All good responses. Via between the connector pins Soldermask covering the pads Tight zig zag on some traces Traces real close to some of the pads... Read more

8 bit vs. 32 bit Microcontrollers

There's a lot of talk these days about the new generation of 32-bit microcontrollers and the demise of the 8-bit controller. I'm a big fan of the Beagleboard and mbed boards (ARM Cortex A8 and ARM Cortex M3). And the... Read more

DB25 With Issues

Take a look at this footprint. We're looking at the solder-side of a DB-25 connector footprint. Given all of the smt and HDI (High Density Interconnect) we see these days, this looks pretty primitive; like it could be straight out... Read more

Holiday Shutdown, April 2nd

Screaming Circuits will be shut-down on Friday, April 2nd for the Good Friday holiday. That day will not be counted toward turn times and we will not be shipping on that day. This means, for example, that if you place... Read more

Who's Resonsible For The Footprint?

I recently wrote a bit about CAD library parts for QFNs and a reader posed an interesting question in response to it: "Okay, that makes sense.. But why don't manufacturers of the part put out their footprints and schematic symbols... Read more

Many Faces of the QFN

When I first started using a CAD package for circuit design, I couldn't understand why the software didn't come with all of the standard footprints and why that wouldn't be good enough. That level of ignorance was hopefully pretty short-lived.... Read more

Screaming Circuits is going to ESC

Screaming Circuits will be exhibiting at the Embedded Systems Conference in San Jose this April. The ESC exhibition runs April 27, 28 and 29 and Screaming Circuits will be in booth 827. As usual, the show will be held at... Read more

Mysteries of Engineering

I (and many, many of us, presumably) have been reading more about all of the Toyota woes and the to-date unanswerable questions. Still, so much of the material written about the issues seems to be coming from the untrained. Certainly,... Read more

Thermal Mass Follow Up

RoHS has been with the electronics manufacturing world for quite a while now but there is still a lot of issues and uncertainty associated with it. As I wrote not long ago, even parts that are supposedly compliant can in... Read more

Beagleboard Innovation

Open source hardware makes me happy. Open source has been around in the software world for a long time, but it's still fairly new in the hardware dimension. I think 2009 might just be the year that OSHW reached critical... Read more

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