Projects are presented in chronological order, starting with the most recent.
If you're interested in a custom project, I've established Artisinal Electronics to conceive and construct artisan and steampunk electronic devices.
High Power Magnetic Broom
A constant rain of micrometeorites falls to earth, but they're seldom detected. They can most readily be found by sweeping magnets across sandy beaches. I scavenged powerful rare earth magnets from dead hard drives to make this magnetic broom with that primary purpose in mind.
Second generation iPhone adapter
I built this adapter to connect an external audio source to my iPhone, according to the schematic at right. Unfortunately it is mono only; the only way to record in stereo is via a more complex Lightning adapter.
Webster-Chicago Model 288-1R wire recorder restoration
Devices to magnetically record onto steel wire were briefly in use (in the 1940's and early 1950's) prior to the advent of reel-to-reel tape. This device was in sad shape when I purchased it, but is now fully functional (it required mechanical and electrical work, as well as restoration of the case). This recorder adds to my small collection of antique audio recording devices and accessories. Click on image at right for video of this wire recorder in action.
original iPhone microphone adapter
I built this adapter to connect the audio output from a scanner into my iPhone, according to the schematic at right, based on the instructions found at this website. One thing I can do with it is connect it to my radio scanner, and decode aircraft transmissions using Black Cat Systems' ACARS Decoder app.
Up/Down scroll pedal for notepad
I usually use an Asus notepad for sheet music at performances & practices. I wanted the ability to scroll up & down hands-free, but an inexpensive version of this device is not available commercially, so I constructed one using a two-pedal device (originally used for medical imaging equipment) with the re-wired guts of a USB keypad installed inside. The keypad defaults to numbers, rather than the up & down arrows I desired, so I had to add a "Num Lock" button in the back to initialize the unit to use the arrows instead.
Coffee grinder adjustment
The coarsest setting on our Delonghi coffee grinder was too fine, so (taking a cue from Zheng's blog) I hacked the inner mechanism so that we could achieve the perfect grind. Yes, I voided the warranty, but what's more important - a warranty I'll probably never need, or a good cup of coffee?
Nixie tube tester
Nixie tubes are very cool retro-looking neon-type tubes used in some 1950's and 1960's electronics to display numbers. I salvaged two of these tubes from a multimeter I lost in a major flood at our house in September 2011. I decided to build this box to test the tubes, and to familiarize myself with how they work. The unit runs off a 9 volt battery using a power supply (from a kit I purchased online from LEDsales in Australia) to step the voltage up to 170 volts.
We had to gut and rebuid our entire basement, including my workshop, following a flood in 2011. Although it took a lot of time, money and effort, my new bench is a joy to work at.
Message indicator extension
My phone has a flashing light to indicate that I have a message, but I couldn't see it from the doorway of my study, so I cut up a length of fiber optic cable into pieces, made it into a bundle, and inserted it into a copper fixture that I painted (well, actually Sharpied) black & affixed to the phone. Voila! Now I can see the flashing light from the doorway, without having to go to the phone to check it :)
I needed a way to temporarily kill a microphone hooked up to my sound system (so that it could be muted, or turned off & on without a big pop from the P.A. system), so i retro-fitted a momentary power foot switch (inset photo) from Harbor Freight, gutted it, and inserted the electronics depicted in schematic form at right. It works beautifully :)
SD card to USB adapter
The adapter for my camera card was originally encased in a hideous hinged plastic thing; i decided to extract the innards and encase them in wood instead. Marie suggested the copper side trim to make it look more steam-punk, a fashion we've been intrigued with after seeing the movie Metropolis.