A simple Time Domain Reflectometer


Time Domain Reflectometer PCB Component side

I built the simple signal generator described in Electronic Design. The same circuit you find on ZL1NC and epanorama. Together with an Oscilloscope it can be used to find a cable fault as described in this All about Circuits article.
The 74AC14 SMD is mounted on the board its trace side. All other parts are through-hole. Most parts were salvaged from old electronics. You can adapt the PCB to your needs.

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Nanotec stepperdriver breakout


nanotec_breakout.png

Now working on a small breakout board for the Nanotec microsteppercontroller. To be used in the RepRap 3D Printer.

For those interested, you can download the Eagle files (.zip 291 KB)
The parts-list you can find on Thingiverse.

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