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Screaming Circuits
Screaming Circuits company blog
Interests: Assembly, RoHS, smt, BGA, QFN, pcb, chocolate, prototype, quick-turn
Recent Activity
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There are many reasons you shouldn’t use via in pad. It’s not good practice, and those via holes act like little capillary straws and suck solder off of the pad or the BGA. That said there are some applications that... Continue reading
Posted Apr 17, 2015 at Screaming Circuits
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By now, most of you have heard about the Internet of Things (IOT). If not, here's a quick summary: The Internet of Things is the concept of having pretty much everything connected to the Internet in some way shape or... Continue reading
Posted Apr 6, 2015 at Screaming Circuits
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Tired of all those small parts? Can't figure out how to route traces to all 1,900 balls on that hot new FPGA? If 0201 passives have you running scared and the possibility of 01005 parts coming soon has you on... Continue reading
Posted Apr 1, 2015 at Screaming Circuits
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Everyone knows which way current flows through a diode. Right? Of course they do. Diodes only allow current to flow in one direction. Well, sort of. In the case of your garden variety rectifier, barrier diode, or LED, that's true.... Continue reading
Posted Mar 27, 2015 at Screaming Circuits
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The continuing saga of the 0.4 mm pitch KL03 ARM microcontroller. If you haven't yet done so, read part I, and part II. Today, I have a look at the good, the bad, and the ugly - or more accurately,... Continue reading
Posted Mar 20, 2015 at Screaming Circuits
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I'm a bit behind in my blog work - well, way behind, actually. I started this series back in January with the intro post. Here's where I am right now: I have three different sets of PC boards. One set,... Continue reading
Posted Mar 5, 2015 at Screaming Circuits
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I’m not sure exactly when the term “Internet of Things” (IOT), was coined, but it’s become one of the hottest topics in the electronics industry. The IOT is all about connected devices, most small and independent; many from makers and... Continue reading
Posted Mar 3, 2015 at Screaming Circuits
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I've noticed that a lot of CAD library footprints for two-pin polarized parts have pin one pointed up as zero degree rotation. According to IPC, pin 1 pointed to the left is zero degree rotation. Why is this such a... Continue reading
Posted Feb 20, 2015 at Screaming Circuits
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Before we (or any old assembly house) go about putting surface mount parts on your board, we need to program our assembly robots. I'm oversimplifying, but essentially, the machine program needs to know the X / Y coordinates, relative to... Continue reading
Posted Feb 13, 2015 at Screaming Circuits
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Do you need PCB Assembly Services, or do you not? That is the question. Well, it's A question. Just one of many, I suppose. One of many, but it is a question just about every electronics developer needs to answer... Continue reading
Posted Feb 9, 2015 at Screaming Circuits
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I've written a few times about the new Freescale KL03 ARM Cortex M0+ microcontroller. This particular part comes only in very small packages, with the smallest being a 1.6mm x 2mm WLCSP (wafer level, chip scale package) 0.4mm pitch, 20... Continue reading
Posted Jan 28, 2015 at Screaming Circuits
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We have a number of manufacturing engineers running around here at Screaming Circuits. They're very good at what they do, as are our operators and technicians. They are not, however, electrical engineers. Our parent company has a big group of... Continue reading
Posted Jan 15, 2015 at Screaming Circuits
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At the moment, I'm working on an Arduino compatible clock. Like most of my Arduino compatible boards, this one uses an Atmega32U4, with USB built in. With the Atmega32U4, I sacrifice a little in program memory and SRAM, but gain... Continue reading
Posted Dec 16, 2014 at Screaming Circuits
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I'm not sure who first used the term "drone", but "Robot" was first publicly used by Karel Čapek in his 1921 play "R.U.R.", or "Rossum's Universal Robots." January is not only the month the play premiered, but Karel Čapek was... Continue reading
Posted Dec 8, 2014 at Screaming Circuits
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In November, we started our electronic business card holder program. We ended up building more than we had planned, so it will be available for December as well - at least until we run out. Here's how you get one:... Continue reading
Posted Dec 2, 2014 at Screaming Circuits
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People sometimes ask who we are as Americans, or who we think we are. We are a diverse lot. We are people who couldn't hack it in the old world. We left the old world because we were chased out,... Continue reading
Posted Nov 11, 2014 at Screaming Circuits
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It isn't easy to differentiate yourself from the rest of the world. Use this electronic business card holder to impress your peers and customers. And well, it's just plain cool. If you are an existing customer of ours, we’d like... Continue reading
Posted Nov 6, 2014 at Screaming Circuits
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Small component packages seem to be a recurring theme with me. It's understandable, I guess. Super tiny packages are becoming more and more common and we build a lot of product with them. The smallest we've built is 0.3mm pitch.... Continue reading
Posted Oct 25, 2014 at Screaming Circuits
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A while back, I wrote about a new ARM Cortex M0+ chip from Freescale. It's not the first M0+, but I do believe that it's the smallest. I've been checking stock off and on and finally found the smallest package... Continue reading
Posted Oct 7, 2014 at Screaming Circuits
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If you're looking for the absolute, cheapest possible assembly service, you'll need to look outside of North America. If you really need a decent price with good quality and good service, you can keep your gaze West of the Atlantic... Continue reading
Posted Oct 6, 2014 at Screaming Circuits
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As I mentioned in my prior blog, there are reasons to consider different packages than just physical size. Sometimes it is just space available on the PC board, but there may be other considerations as well. One of the first... Continue reading
Posted Oct 1, 2014 at Screaming Circuits
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The QFN (quad flat pack, no leads) has become my favorite integrated circuit package. It's very compact, yet is easier to use than a micro BGA. Micro BGAs of 0.5mm and smaller pitch become a bit more difficult and costly... Continue reading
Posted Sep 9, 2014 at Screaming Circuits
The upside of a visible identity is that people see you can might possibly care and understand. The downside, is that people can find you. Today, I'm sort of treading the line between the two. I'm testing out some Twitter... Continue reading
Posted Sep 5, 2014 at Screaming Circuits
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My last post mused on the affordability of assembly at Screaming Circuits for the maker/very small business/kickstarter community. My hypothetical Arduino-compatible dual motor driver Kickstarter came out to $9.81 per board at a quantity of 250. That's probably more than... Continue reading
Posted Sep 3, 2014 at Screaming Circuits