Category Archives: Electronics

All the Way to the Metal

Posted on February 4, 2013 by e8johan

Ken Shirriff has been working hard lately. In two great reads, he presented details from the classic CPUs 6502 and 8085. Basically, what he does is that he picks apart the overflow flag of the 6502 and the ALU of … Continue reading →

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SparkFun on Test Rigs

Posted on January 18, 2013 by e8johan

As a short follow-up on the Design for Manufacturing article by Bunnie, here is SparkFun’s take on the topic.

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Motor Driver Booster Pack

Posted on January 14, 2013 by e8johan

Do you have a need for speed? Or just a need to run a couple of motors? If you combine that need with a TI LaunchPad, the Motor Driver Booster Pack from Longhorn Engineer might be just for you. It … Continue reading →

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Outsource Your Projects

Posted on January 8, 2013 by e8johan

Boingboing leads us to the first path of the great series of Bunnie Huang (who runs a great blog, by the way). This is the start of a four part series on outsourcing manufacturing. More specifically, to outsource to China, but … Continue reading →

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Tiny Arduino Clone

Posted on December 21, 2012 by e8johan

A couple of days back, we wrote about Kimio Kosaka’s amazing freeform Arduino clone. This artist of electronics is not a one hit wonder. He has done more work around the Arduino. For instance, his one-chip clones are real works … Continue reading →

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The real Pong

Posted on December 19, 2012 by e8johan

The classic game of pong has been reimplemented many times in different settings. For the purist, the right way of doing it is to base the replica on the original schematics. This imgur album shows how Pong is built in 74LS. … Continue reading →

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Low-cost Devboard

Posted on December 14, 2012 by e8johan

Imagine running a course around Arduino. As soon as you start drawing a crowd, the hardware cost will be significant. Enter the Shrimp. The Shrimp is an ultra-slim, low-cost Arduino clone. Bringing the price down to about £8, almost a … Continue reading →

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Amazing Freeform Arduino

Posted on December 7, 2012 by e8johan

Freeform, or dead bug style, electronics intrigues me. It can be the quick route for simple circuits, but to Kimio Kosaka, simplicity and ease of assembling was not the end goal. His amazing Metaboard-based design can even use shields. I think that the … Continue reading →

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Build a Custom FPGA

Posted on December 3, 2012 by e8johan

FPGAs are monsters of flexible logic. If you have a problem that can be pipelined or run in parallel  you can perform miracles. If performance isn’t your focus, you can emulate beautiful machines from the past. Over at Nick’s blog, there … Continue reading →

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4bit Transistor Computer

Posted on November 16, 2012 by e8johan

The nice people over at Waiting for Friday has written a nice story on how to build a simple 4-Bit_Computer. Calling it a computer might be a bit over the top, it is actually a small adder circuit. The nice … Continue reading →

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