Sugardude

I've got this old machine running on our home network... On the network we have three XP machines and this old beastie... When we got it (10 years ago) Win 95 was the big thing but we've stuck Win2000 on it for compatibility... It's got a Pentium MMX processor (133 Mhz) and 16 meg of RAM. The CD-ROM doesn't work natively, we had to put an Atapi driver on it for it to work. and now it's got two 200GB hard drives with all our films and stuff sitting on it... We removed the screen, mouse and keyboard and it just sits next to the hub by the bookshelf acting as a big network hard drive... It also plays music for us as it's plugged into the Stereo and my dad found this app to remotely control the computer through the network so that's haw we use it...

Maybe a threaded stud would be cool, but it's possible to get a clear image on a very long depth... The size of the lenses being very small, the gauss conditions are applied which means we can get a crisp image from say 1 metre to infinity if the lense is set at infinity... jimenadelc, what you need is to find a very small lense with a focal lenth of about 3cm, and place the lense exactly at 3cm from the objet (mini transparent logo). This create an infinite image of the objet, so theoretically it's blurred, but because of the small size of the object and lense the image is clear. If you find that the image isn't clear enough you may want to make the distance from the object to the lense a slight bit longer, but be careful, 1 mm can make drastic changes to the quality of the image... If you could tell me at what distance you intend to project the logo (estimation because it'll be clear anyway) and the lense you choose I could give you an exact plan...

Wow, thanks audioguru... You've just helped me a lot... I'll let you guys know how I get along with this... Yet again, thanks

The electronics involved here are practically zero, you just need to link your LED in series with two or three watch batteries a resistance and a switch... What IS hard though is getting the picture to appear... What you'll need here are some very small lenses (and know their focal lenths) and a very small diapositive of your logo... Tell me when you've got those or if I'm free to use any focal lenth and I'll tell you how to place the lenses to get the crispest image possible...

Hello there... I'm new to this forum and new to electronics... Normally I spend my time making music, and at school we study a bit of electronics and binary logic with NAND and NOR gates and stuff... When I discovered MIDI was a basic binary signal I thought, ok, I want to make my own synth then... So I pretty much know how to do all the work exept one thing, converting a voltage, an amperage or a wattage (whatever seems simpler to you) into a frequency... If I could find or if somebody knows a simple circuit that could give me a variable frequency that I can control (from about 130 hz to 989hz) then I'd be a happy dude (I can do with sine, square, triangle or sawtooth waveshapes)... Thanks a lot for any help you can give me, I'll post the synth's schematics in here once I'm done so any other electro musicians can have fun building it too...