Screaming Circuits: Building boards for the Intel Edison

PROTOTYPE AND SMALL VOLUME
PCB ASSEMBLY MADE EASY

Building boards for the Intel Edison

I've recently spent some time getting familiar with the Intel Edison. The Edison has a dual-core 500 MHZ Intel Atom processor, with built-in Wi-Fi and Bluetooth. It comes with 1GB of RAM, 4GB of eMMC internal storage, and a USB 2.0 OTG controller. It doesn't bring any of the connectors (power or signal) out in a usable form. Rather, it's designed to be plugged onto another board through a 70-pin high density connector from Hirose.

I designed a small board with I2C (both 5 volt and 3 volt connectors) and a micro-SD card slot. My board still doesn't have the power or console connectors. For that, I'm using a base board from Sparkfun.

Stacked Edison

Step one of the assembly process, is, of course, to design and layout the board. Using the Sparkfun open source designs as a jumping off point, I ended up with the nice, compact layout (1.2" x 1.75") shown below.

SCmultiboard layout

After getting the files ready and placing a turn-key order on our website, I followed the board through with my camera. Here it is after offline setup, with the parts ready for robot pick and place.

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In one of our MyData My500 solder paste printers

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On the pick and place machine, with solder paste, but before any components are placed.

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The parts plate in the machine.

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With most of the components placed

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 Through the reflow oven, prior to final inspection

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The final product, top view

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I abbreviated the process a bit, but those are the major process steps along the way.

Duane Benson
Happy birthday (month) Nikola Tesla

Comments

Great article. I am going to share with my students.

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