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Canadian (in UK). Dancing Queen (in my head).  fan. M·A·C fan. Tech ❤r. Arduino User. Physical Computing. Distributed Cognition. Wearables. iOS dabbler. Popcorn Eater. QMUL PhD candidate.
26
Mar

Accessing Analogue In, Arduino

By CMoz|Various Code: Arduino, Processing etc|Be the first to comment!

I’ve been using lilypad for some projects and I needed MORE pins! I was aware of them saying that you can use the Analogue pins for digital output, but I just wasn’t sure how. and turns out – it’s a lot easier than I thought. So writing this post incase someone else is stuck – all you need to do to use the pins is name them in the following convention when coding – so 

Pin 14 = Analog in 0
Pin 15 = Analog in 1
Pin 16 = Analog in 2
Pin 17 = Analog in 3
Pin 18 = Analog in 4
Pin 19 = Analog in 5

These are typically marked A0 A1 A2 and so on. These are not PWM pins is the only thing to be aware of. There is a PWM library you can download, which does a software version. I haven’t needed to do this so I’m not sure how well it works. It’s described as “An Arduino and Wiring Library to produce PWM signals on any arbitrary pin.”

Sample would be 

int led = 15; //the LED is on pin A1, which is 15

Easy Peasy.

28
Jan

Basic Electronic Formulae

By CMoz|Various Code: Arduino, Processing etc|Be the first to comment!

I came across this really helpful page over at http://www.bitsbox.co.uk/ where I’ve bought some of my components from. It’s handy to have so wanted a copy here where I can find it! There is more information on their page, such as resistors in series etc… 

Original post: Basic Electronic Formulae.

Ohms law.  
The voltage across a resistance is equal to the current passing through the resistance (in Amps) multiplied by the value of the resistance (in Ohms).

            Voltage = Current x Resistance     or     V=IR

V=IR    or    I=V/R    or    R=V/I
 
25
Jan

Apple applies for patent on ‘smart shoe’ sensor

By CMoz|PhD Related|Be the first to comment!

This is really interesting and has potential applications in the study I’m currently doing in Assistive Technology.

“In a patent filed back in July 2012, Curtis Vock and Perry Youngs are listed as the inventors of a “shoe wear-out sensor, body-bar sensing system, unitless activity assessment and associated methods,” with Apple Inc. as the assignee. Vock is an intellectual property lawyer with Lathrop & Gage, a law firm based in Boulder, Colo.” All the information / full article is available:

Apple applies for patent on ‘smart shoe’ sensor | TUAW – The Unofficial Apple Weblog.

 

25
Jan

Dynamic Label Creation

By CMoz|iOS Code: snippets, tips, tricks, help|Be the first to comment!

Dynamically creating a label was one of the things I was looking at, dynamically creating any UI object really – and also the placement of it at different random coordinates was important. This is the code I implemented for the iPad app which is landscape orientation.

//Create a label

int labelX = arc4random() % 904;   // the maximum number I would like it to start at – minus the width of the label.

int labelY = arc4random() % 840;  // the maximum height area, minus the label height.

UILabel *randomFactsLabel = [[UILabel alloc] initWithFrame:CGRectMake(labelX, labelY, 100.0, 20.0)];

[randomFactsLabel setTextAlignment:UITextAlignmentCenter]; // other options such as text colour etc

[self.view addSubview:randomFactsLabel]; // to display the label

 

If the coordinates are exact, just replace (labelX, labelY… with the x and y coordinates of where you want your label.

 

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“I want everything we do to be beautiful. I don’t give a damn whether the client understands that that’s worth anything, or that the client thinks it’s worth anything, or whether it is worth anything. It’s worth it to me. It’s the way I want to live my life. I want to make beautiful things, even if nobody cares.” - Saul Bass

  • Фарион © 2013 Christine Morris.