Retrofitting a Lenovo T520 with a Raspberry Pi CM4 – Part 1

I was looking around the storage rack in my main workshop, when I stumbled upon an old Lenovo laptop, specifically a T520 model. These are nicely made solid machines, rather hefty but nice to use. The keyboard and trackpoint are great, and the screen is OK as well. This got me thinking; I have two …

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Xuron 9110f

New Cutters Day

Super quick update to extol the virtues of some very good value side cutters I bought recently on a tip. Thanks to the Hackaday Circuit Sculpture remoticon workshop, when Mohit Bhoite was showing off his tools and mentioned these. In short, Xuron makes an excellent range of cutting tools, coming in a variety of shape …

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Repurposing a video distribution amplifier – part 1

Lots of timing-type instruments, such as frequency counters, AWGs and oscilloscopes have the option to be tied to an external frequency reference, most commonly 10 MHz. This enables correlation of measurements from different instruments, as well as vastly improving their accuracy and repeatability. Impedance and Termination It is a useful at this point to mention …

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So what is it? This project was born out of some sort of necessity, deep in me somewhere. I tried to get Project Omega (a configurable card-based electronics platform) off the ground, but the current open source compatible FPGAs were proving just too minimal to be sufficiently useful and I shelved the project until the …

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Fixed Layout Prototyping

I was thinking about prototyping electronics again, as I often do, and I was wondering about what might be optimal (as in most flexible) for handing small SMT parts like SOT23-3. Your choices are many, but pretty much all are bog-standard offerings derived from the original Veroboard layout (i.e. 0.1″ hole array, with a series …

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