Skip to main content

A plain 9 digit VFD

While digging through a bin of calculators and spell check thingies at a thrift store, I came across what looked like (At first) an old handheld calculator that made use of a VFD (Vacuum Florescent Display). It turns out I was wrong, it's a "Invicta Electronic Mastermind", whatever that means. When I looked it up on the web, it seems like it's an electronic version of Mastermind, the code breaking game. I've never played it, but it looks like it might be fun...

I was mainly interested in it for the VFD, and since it was missing the battery cover and was 25% off to boot, I though maybe I'd get it for cheap. So, since I had time to spare (My mom wasn't ready to leave quite yet), I went and dug through the TV remote bin looking for 2 AA batteries. Once found, I tested the "Mastermind". It didn't work as supposed to, just displayed random characters on the screen. Oh well, I did say I only wanted the VFD...

The VDF showing some 8s. It likes to do that, for some reason...

It's a Futaba 9-ST 10, but looking online, there's no datasheets (of course), so I'm on my own for reverse engineering it. Luckily, it's still on it's circuit board, and it's a pretty simple display, so it won't be hard.

 Just look at that rounded glass envelope!

Who knows what I'll do with it, it's a bit large for a clock, but for now I'll just keep it for someday...

(Edit: This is one thing I got rid of from my pile of "for some project someday" stuff)

Comments

Popular posts from this blog

SAA1099 & Arduino - Fireflies - Owl City

I just finished a YouTube video that's been stewing in the back of my mind for quite a while.
It's an Arduino Uno hooked up to a vintage SAA1099 square wave generator chip, playing "Fireflies", by Owl City.

When I first conceived the idea, I wanted to make a bunch of cuts in the video to different angles. However, with the equipment I had at that time, it would have been several days of work, at least. Recently, I bought/made a few tools that made the production of this video much easier than I'd thought it would be. I'm quite pleased with the results.

My crazy "Studio" setup
  What was the equipment? An vintage high quality thrift store tripod (5$), an homemade audio input adapter for my phone (Free), and the craziest lighting setup I've attempted (Also free), and I got some pretty nice video and flawless audio!

  I'm looking forward to making more cool videos in the near future, and maybe eventually I'll even buy something better tha…

Declutter the Space

I’m a person who has a lot of ideas for projects. Something I see at a thrift store will inspire an idea for a project involving that thing- Sometimes it’s a tool I think I need, and all it needs is that one thing, and some of my time.  I’m also a person who already has a lot of projects. When a new one comes along, I have to shove it in among a dusty pile of projects to-do. If it’s really interesting, I start working on it, shoving whatever I was working on into the pile instead. I’m rarely ever not working on some project of sorts. I don’t stop having ideas for cool projects. Pretty soon, I’ve got a pile of projects in the attic of my brain, some of which are overflowing into the livingspace. It starts to get a little hard to focus on one thing. I’ve got no time to do any of them, because I’m too busy trying to get them all done at once.
Project cutter is mentally - And physically. I’ve got stuff saved because I have a project in mind for later, and stuff that I don’t have a projec…

Some Creative Commons pictures I took

A hen and chicks plant that is growing in a pot at my house.
A minor hobby of mine is photography. I don't know a whole lot about it, nor do I have any fancy equipment (unfortunately), but I can get my smartphone (A florescent yellow-green Sony Xperia Z1 Compact) to take decent photos. I usually take pictures of flowers, and occasionally I get a decent photo of something else.

  Anyways, I want to share some of my favorites here, under a Creative Commons 4.0 Attribution license. What does that mean? Here's a quick overview from the Creative Commons website.

You are free to: 
Share — copy and redistribute the material in any medium or format Adapt — remix, transform, and build upon the material for any purpose, even commercially Under the following terms:
Attribution — You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.  No…
Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 International License.