Archives April 29, 2005

Friday, 29th April 2005.

Chip

I haven't really been doing all that much. Mainly working and drawing switches and stuff in Inventor. I am creating each component for use in my prototype Remote Release for my DSLR. It's going to be programmable so you can do long exposures, multiple timed shots etc.Once I have completed models of each component I will be able to create a prototype in Inventor to see how everything will fit. It's a hell of a lot easier than drawing it on paper or actually building it to see if it will all fit and look ok.

At the moment I am going to start drawing a square push button that I bought from Dick Smith. I also have to draw the Zippy box I am going to use. The other thing I have to investigate is taking apart some Neon lit rocker switches and replacing the Neon with an LED so it can be lit when used with low voltages.

I have already drawn a different push button; I think it will be too high off the panel though, so that's why I bought the smaller square ones to try. The only advantage of the taller ones is they use an 11mm round hole, that's a lot easier than the square buttons where you must drill a 9mm hole and file or nibble it into a square hole.

The LCD for the project is already modelled. It's an Ampire brand 16x2 with Backlight. I am still thinking about how that's going to be mounted. I am trying to decide what lid to use on the Zippy box. I could use just the plastic lid, just the thin Aluminium lid or both. If I use just the plastic the LCD will be in-set 2mm, it will look pretty deep. On the other hand I could use just the Aluminium lid. That I think would be pretty flimsy on its own, but would look nicer. If I used both then I would cut a bigger hole in the plastic so the LCD could fit but the top of the LCD would sit flush with the bottom of the Aluminium panel; giving me the best of both worlds.

The other thing I want to investigate is creating/sourcing a 2 stage button for manual shooting. I was thinking of using a pair of micro switches at different heights. That would probably be difficult to set up and achieve consistant switching from. It might need a de-bounce circuit as its going to be used on a diital input.