Posted tagged ‘circuits’

Electronic circuits, Arduino and others

May 27, 2009

It must seem like I’ve been quiet recently but I have been doing stuff. ‘Stuff’ is probably the best word to use here because it is encompasses quite a varied group of ‘things’ as a description.

Here’s a break down of my recent activities:

Reading Digital Arts, by Christiane Paul: I was actually supposed to have done this at the start of the academic year as it was listed as ‘recommended reading’ but no one really does that right?

More Pattern making: some were failures – I started giving in and doing my own thing again but I pulled back and said ‘No Sara you must follow the rules’ so I went back to using my handy Islamic Design book and did some new patterns.

Remember doing this in school?

Remember doing this in school?

This one had potential but then I didn't like the way it was going

This one had potential but then I didn't like the way it was going

Another naughty pattern

Another naughty pattern

It’s always frustrating trying to get the lines, angles and circles in the right places but I persevered. Now I have some new patterns to work with to create some more laser cut panels. I want to do more complicated patterns to really experiment with light and shadow effects.

Back to following the rules

Back to following the rules

Underlying grid is easy to see in this image which looks quite interesting as a whole

Underlying grid is easy to see in this image which looks quite interesting as a whole

Hand cut pattern in black card

Hand cut pattern in black card

I’m pleased with this (above image) – even though it looks quite simple it took a while to get to that stage. The star shaped flowers are not accurate at all but I’ll be fixing that up when I make a digital version using Photoshop and Illustrator. I will probably add more detail to the larger shapes though, as I think details look better when enlarged with a light source on a wall – almost like a projection.Using this hand cut method allows me to get a rough idea of what the laser cut design will look like in mdf.

Visiting the Library: I rarely go to the library anymore. Not because I don’t like reading or even just looking at the pictures in books but because I prefer to have my own copies. That way I know I won’t find any unusual stains in between the pages, nor will I have to worry about returning it in time in order to avoid a fine. Anyway so back to the story at hand – I decided that forking out £26 for ‘Physical Computing’ by Dan O’Sullivan and Tom Igoe, was slightly beyond my current budget and it would make sense to just go and borrow it. So off I went to LCC and I’m glad to say no stains have been discovered as yet.

I’ll write a review on both books at some point.

Electronics/Arduino board workshop: Leon, a current Camberwell PhD student was doing this workshop for us last Wednesday (20th May). A brief overview of how it works was provided, as well as some useful links (http://www.arduino.cc/). I spent a good amount of time trying to familiarise myself with the different parts of the boards whilst putting together a set for infra-red detecion. Had to look up different types of resistors, transistors, and all those kinds of bits and bobs to make sure I was putting the right ones in the right places.

Arduino board image from arduino.cc

Arduino board image from http://www.arduino.cc

We then moved on to testing Isaac’s (fellow student: http://www.isaac.alg-a.org/) motor circuit which had a light sensitive resistor attached to it. This set was programmed to turn on an LED and start a motor faster or slower according to the light detected by it. The code looks quite similar to PHP and other complicated programming languages that I really need to start learning at some point. Or maybe I think they are complicated because getting to know it better is something I keep putting off and is almost my excuse for delaying the process?

Getting to know a circuit

Getting to know a circuit

My fear of learning this new but potentially hard stuff is not greater than my wanting to complete my project to a high standard.

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Patience is a virtue I am struggling to hold on to

February 15, 2009

Ergh, I’ve burnt my fingers twice now with the soldering iron and I still have another billion wires to connect. I am now doubting this was a good idea.

I am basically trying to build a large circuit of wires as part of my prototype to show at the Mid-point review in a couple weeks (March 4th). Unfortunately it is taking forever and because I wasnt sure how much of the wires I would need and delayed purchase of switches and batteries, the whole thing is just soo loooong.

I know there is a more efficient and advanced and cool (in terms of technology) way of doing what I am trying to do (will explain when it is all done) but that would mean learning a whole new programming language which I think would take longer.

As I am not the type to give up I am going to carry on with this until the deadline and just see how much I can get done. It doesn’t help that I’ll be away for 8 days from next Thursday. I’ll only have roughly 4 days to get the rest done. Oh well.

Another idea

January 16, 2009

I’ve been thinking about how I can take my experimentation and pattern-making to the next level. I have my mid-point review coming up in March and need to start making some significant progress otherwise I won’t be making the most of it. Plus the way I see it, the more work I do now the more I can develop my ideas and learn from my mistakes and early prototyping which should then lead to something much stronger at the end.

In the next few weeks I’m planning to make a small interactive installation which basically consists of a circuit of lights (LEDs) on a grid where the user can switch them on and off to then produce a pattern. The control of the lights would be through another grid of buttons that correspond with the lights on the other board. Each button would control the corresponding lights – turning them on or off.

I was trying to imagine how the user would react to this piece. Would they know what to do with the buttons/lights? Or would they need to be told. Then I realised that the user is not going to have a clue what this grid of lights is and will just start playing with it. What if they create any type of image out of the lights, random doodles, shapes, anything? Why would they assume it had anything to do with patterns? And how would I restrict their use of the device and therefore make it related to my actual subject of Islamic patterns?

Well, whilst discussing the practicalities of making the piece with Kenji (full time student) who knows a bit about electronics, I realised there was a way to not only restrict the user from doing something completely of their own accord, but also make them aware of some characteristics that make up an Islamic pattern. I don’t want to give the game away just yet though as I want my fellow students to figure it out for themselves when it comes to the mid-point review. I’m hoping to have this ready by then.

I’m really looking forward to this! Let’s just hope that it actually works when the time comes!