Repairing a Pair of Audioengine A5 Speakers


I started experiencing an issue with my A5 speakers: my right speaker was getting quieter than the left one!

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CDM324 Doppler Motion Sensor Backpack, with FFTs!

A very small form factor project, not only measuring an object's speed but also displaying it!

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A DC Block to Measure Low Frequencies

A 7Hz High Pass Filter to measure voltage ripple on power supply rails.

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The Low Frequency, Low Noise Amplifier Board


Sometimes one may want to measure tiny signals’ frequency contents at frequencies just above DC.

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The IN-9 Nixie Clock


A 60 Nixie tubes contraption that I postponed for 5 years...

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Radiation Pattern Measurements in an RF Chamber


Very few are lucky enough to use such a piece of equipment... so I figured I'd share this experience with you!

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