Casio MG-510 Midi Guitar
Back when I documented the repair of the Casio PG-380 MIDI Guitar, I had no idea that this post was going to dominate the traffic patterns to my little home on the web. Fully 1/3 of all visitors to this site come to that post, asking questions, posting comments, and requesting repairs. One request I’ve [...]
Another Schwinn Prelude?
After a leisurely lunch on the Marietta Square yesterday, I came across this: Another Schwinn Prelude! It seems I’m not the only one who was unimpressed with the original rusted gunmetal gray look. The owner of this Prelude painted theirs similarly to mine. A base coat of cream with an accent color for the lugs [...]
Ring Modulator: Prototype to Final Build in One Ridiculous Step
If you’ve been to this site before you know that I’ve been building a ring modulator for Bill Graham to use with his Rhodes for the better part of a year. If I had enough time to do it right it’d take me less than a week, it’d be stable, and I wouldn’t be worried [...]
Ring Modulator: Prototype Take Two
About a year ago I posted an article about a Ring Modulator prototype I had created using 2 audio transformers and some matched diodes. The design was beautifully simple, and I may return to it someday, but it had a number of shortcomings. The circuit I started with would have needed a preamp for my [...]
Casio PG-380 Midi Guitar
Several months ago Jason asked me if I could fix a MIDI Guitar. I didn’t have the slightest idea how to fix one, and had only speculative knowledge about how they work, so naturally I said “yeah, sure, piece of cake”. If I’d have known at the time the kind of gear lust this project [...]
Schwinn Prelude Redux: Complete?
The Schwinn is all back together now with the new paint job, decals, handlebar tape, and cabling: Here’s a before pic for reference: The red and white striped bar tape was a nice final touch: So what’s next? I might replace the seat with an old Selle Itialia Flite saddle if I can find one, [...]
Schwinn Prelude Bicycle Restore: Clear Coat
It’s been a while but I finally found some extra time to slap a clear coat on my Schwinn redux. I saw “I”, but really my father-in-law took care of this one. Its delicate work, and I’m just not in to that. Maybe next time. Clearcoating is really to hide and protect. It masks any [...]
Schwinn Prelude Bicycle Restore: Decals
With all the painting done its time to move on to puttin’ fancy stickers on the bike. It occurs to me that I didn’t post a picture of the bike with the paint all finished, so here is a shot: Looking pretty slick. I ordered two sets of decals for the bike from eBay. If [...]
Schwinn Prelude Bicycle Restore: Painting II
Its been a few weeks, but I finally moved on to the last of the painting over the weekend. In the previous post we painted the frame in its entirety with a primer and the cream colored base coat. We did a test with the red paint for the lugs and details on the fork, [...]
Ring Modulator: Initial Prototype
A few months ago at band practice Bill mentioned ring modulators, and asked if I knew how to make one. I had seem some circuits and knew they were pretty easy to construct so I said yeah, no problem, give me some time. Since my life is basically just going from project to project, I [...]
