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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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If you're attempting to cross the median of a busy four-lane highway, it's entirely possible that there's a Jersey Barrier in your way. In that particular setting, having something sturdy blocking your way is probably a good thing. On the... Continue reading
Posted Jul 23, 2015 at Screaming Circuits
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We love parts on reels. Who doesn't? But reels aren't always practical - and it's not just about cost. Cost is, of course, important, but there may be other factors to consider. Say, for example, you need 20 2.2K Ohm,... Continue reading
Posted Jul 9, 2015 at Screaming Circuits
Manufacturing, especially small volume one-time-only builds (like a prototype) is hard. It's not wise for most people to actively seek out chaos, but that's what we do, and we do it wisely. That's what we've been doing since 2003. We... Continue reading
Posted Jul 8, 2015 at Screaming Circuits
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It's late. Do you know where your PC boards are? Let me rephrase that: Can unused PC boards be stored for future use? Yes, they can - if stored properly. Keep them wrapped up, or sealed in a bag. Anti-static... Continue reading
Posted Jul 6, 2015 at Screaming Circuits
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There's a lot of buzz floating around these days, about "Personal Manufacturing." Screaming Circuits has more than a decade of bringing personal manufacturing to engineers. We pretty much started the category in the electronics industry, so we're quite familiar -... Continue reading
Posted Jun 30, 2015 at Screaming Circuits
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My prior blog covered the Screaming Circuits Manufacturability Index. It's something I'll be using from time to time when discussing new components I run across. I've got a few examples to put the numbers into context. On the low side... Continue reading
Posted Jun 4, 2015 at Screaming Circuits
Screaming Circuits Manufacturability Index Ranks the difficulty of assembling a component. Index is one to five, with one being easiest, and five being the most complex Sub index: a, b, c a: Not a challenge within the number rank b:... Continue reading
Posted Jun 1, 2015 at Screaming Circuits
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Every now and then, I write about ambiguity with diode marking; like here, here, or here. It's a pretty important subject to get right, but what does it have to do with Marco Polo, you ask? Well, that depends on... Continue reading
Posted May 7, 2015 at Screaming Circuits
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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