Category Archives: Miscellaneous

Dangerous barrel connectors or
Why the cost of the Drawbot just jumped $200

Not all coaxial barrel connectors are created equal.  The male on the top is the one that was on the 30V drawbot stepper power supply before it blew up my new laptop.  The yellow one is what’s on that supply … Continue reading

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Shapelock protective case for Laur’s Prius fob

We had a quite unpleasant and mysterious problem with the Prius’ alarm sounding (lights and horn) when we parked in a quiet neighborhood front of some friends’ house.  (For a square dance.)  We got stuff out of the trunk, but … Continue reading

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Fixing a krubow RF Remote receiver

The USB cable of Les’ RF receiver broke one of its wires to the PCB inside, and resoldering it was difficult/beyond his skill.  He bought a new one (his 3rd!) and brought me the carcass. The cable had pulled out … Continue reading

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Focaccia slicer

Lauren wanted to made sandwiches out of a round focaccia loaf for an unusually long square dance session.  The question was how to slice it in half neatly.  Plan A was to firmly support both ends a long knife horizontally … Continue reading

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Chinese nail blocks not a fraud

Well, that was informative.  As Ziggy taught me to say back at Reuters, “The test is the test.” When Scott told me about keeping a nail buffer block on the bench to provide 4 grits of sandpaper in one convenient, … Continue reading

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Hot melt strain reliefs – next phase

I’ve used hot melt glue for strain reliefs on connectors – typically 0.1″ headers abused as connectors – for a long time.  Insulation is a secondary plus, but the primary goal was physical strengthening/protection of the quite small (and therefore … Continue reading

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Prius footrest

On road trips in the (new, 2015) blue Prius, my left foot is frequently unhappy.  It would like a comfy  place to rest – the way IT wants to sit.  While there is a nice left foot rest, it’s not … Continue reading

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Low tech garbage pickup indicator

Garbage day always brings the question “Has it been picked up yet?” as I look out the window at the cans.  Sometimes I hear the trucks rumbling down the street and watch the mechanical claw pick up the can, dump … Continue reading

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Project Notes hacked

I’ve had a problem over the past few months with someone hacking these Project Notes.  The symptom is a link with text “handjob santa” added very intermittently to the title block of the pages.  It has appeared immediately after “Jim’s … Continue reading

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Analog joystick

I found this nice-feeling joystick for $2 at Goodwill, and thought it might make a good controller for an early demo of the LED wall display at the Northside Mini Maker Faire.  I’d originally planned to use a drum pad, … Continue reading

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