Making a dedicated Logic Analyzer, Part 1

For a few months now (and after successfully using a cheap USB analyzer with my Pocket C.H.I.P) I’ve wanted to make a sort of standalone Logic Analyzer  / mini linux machine that I could have on my bench. I originally wanted to use one of my C.H.I.P boards, but I soon stumbled upon a bit of a difficulty: It’s not that easy to use readily-available touch-screen / LCDs with the C.H.I.P.

Because of this I decided to switch to an old RaspberryPi1 Model B that I had laying around instead.  I don’t need anything faster than that, and finding TFT/LCD screens for Raspberry Pi is ridiculously easy. As a matter of fact, I already had a small 480×320 LCD that I tested before and worked really well. I may eventually switch to a small HDMI screen, but for the time being I’ll use this one:

*SPOILERS* The RPI with the LCD after everything was configured.

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Using your Pocket C.H.I.P as a portable Logic Analyzer

Pocket C.H.I.P + USB Analyzer

So a time ago I purchased a cheap USB Logic Analyzer from eBay that works great with a PC, and it’s been really helpful to debug several projects to date. It uses the Logic software from Saleae as hinted by the label on it, although I am not sure if the device is supposed to be a cheap knockoff of one of the (pricier) genuine Saleae analyzers, or it was just designed to be “Saleae-compatible” and use their software. Read More