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Category Archives: Miscellaneous
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
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
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
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
Posted in Miscellaneous
3 Comments
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
Posted in Miscellaneous
Tagged 15 pin, andrew rudson, Arduino, drum machine, drum pad, joystick, led wall display
1 Comment
Bondic zipper repair
I’d never paid much attention to the implementation of the bottom part of a jacket zipper until my good jacket started to be hard to zip. The “pin” side – that fits into the “box” on the other side – … Continue reading
Cheap USBASP knockoff programmer
I’ve been using the Arduino ISP programmer sketch, an Arduino, and one of my mini shield cables as my AVR programmer for a couple of years now, and that’s been pretty satisfactory. There’s always an Arduino around, it works, and … Continue reading
Posted in Miscellaneous
Tagged fox, ketturi, lc technology, lcsoft studio, roger clark, thomas fischl, usbasp, v2.0, warning: cannot set sck period
14 Comments
Adding an image to a board in Eagle
I wanted to include a Workshop 88 logo on a board Rudy had laid out for the MAPR badges, but didn’t remember all the details from when I’d done it for the Great Global Hackerspace Challenge Educubes. This note is … Continue reading
Posted in Miscellaneous, PCB Etching
Tagged bmp, board, Eagle, image, insert logo, ulp
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Current sink and starter’s gun boost converter test
Background failures I’ve had some problems getting DC power for the audio amp for the starter’s gun project. I needed maybe 15V to get the output I needed, but didn’t want a battery voltage that high, so looked at boost … Continue reading
Posted in Miscellaneous, Rf starter's gun
Tagged current sink, heat sink, IRFZ34N, XL6009
4 Comments
Car has music again!
It’s always nice when a little DIY work can save you $30,000. The 6 CD changer in the Prius wouldn’t play the other day. I noticed a CD partially ejected and when I couldn’t get the unit to eject it, … Continue reading
Posted in Miscellaneous
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