View Full Version : new gadgets

11-06-2011, 08:14 PM
in the last couple months i wasn't in a mood to take pictures, so i used the time to make a few gadgets :)

the sheet film processor.

i got hold of two mamiya 6.5x9 film holders and some x-ray film and i plan to build a (lensed :X) camera around it. i needed a way to develop the film. i saw the mod54 (www.mod54.com) adapter, but they only make 4x5" adapters, so i had to build myself a smaller version. i drew the thing in autocad and paid some time on the laser cutter and this is what came out:


now i only have to build the rest of the camera :X

the metronome.

for this (http://www.flickr.com/photos/hrvojespudic/6094530867/) project i needed a way to make a lot of prints with the same exposure. since i don't have an electric timer for my enlarger, i decided to count the seconds with a metronome.


the circuit is a simple 555 timer circuit, with a few modifications. the lower switch turns it on / off. the upper switch changes the range of the metronome: 0.1-10bps / 70-2000bps. the potentiometer fine tunes the frequency (1bps is marked with a dot).

in the 70bps-2000bps mode you don't hear the separate beats any more, but a constant (very annoying) tone that ranges from D2 to C#7. i did not find a useful purpose for that mode yet :)

the stereoviewer.

this is a project that i planned for a long time, but i never managed to find out what kind of lenses stereo viewers use. after some thinking i figured out that i need a lens that can make close object appear sharp - so reading glasses, or magnifying glass lenses should work. and they both do. i decided to go with 3x magnifying glass lenses (bought on a flea market for next to nothing), since they have a smaller focal length, which means they can be fixed closer to the film, so there's no need for a screen between them.


it can be used with 6x6 or 6x9.5 slides and prints. i have to say the slides look amazing when viewed against the sun 8)

11-07-2011, 08:20 PM
Wow, these are way cool projects. I envy you your access to tools and your skill.

Jimmy G
11-08-2011, 01:05 PM
Very cool. Nice job on the Mod45 copy.

11-08-2011, 05:57 PM
Really cool projects and very well built results.