Week 1 Homework

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Circuit 1: Blink

CIRCUIT 1: The first circuit we were asked to create was pretty basic. I connected the LED power to the Arduino pin 13, the ground was connected to a 330 ohm resister into the GND pin. The basic program set the pin for 13 connection as an output, allowing the current to feed into the led at certain amounts (LOW and HIGH). As this program runs on the Arduino, you can see the LED pulse in one second intervals between on (HIGH – 5 volts) and off (LOW – 0 volts).


Link to video, link to code.

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Circuit 2: Potentiometer

CIRCUIT 2: This circuit a potentiometer is used to give different amounts of voltage using an analog reading. In this circuit, just like the first, the LED power was connected to the Arduino pin 13, the ground was connected to a 330 ohm resister into the GND pin. Then a potentiometer was placed and connected to 5V, GND, and the A0 pin on the Arduino. The code sets the sensorValue to the analog input. This maps the voltage from 0 volts (at 0 analog reading) to 5 volts (the highest analog reading 1023). The sensorValue is then set to the delay time inbetween the pulses between LOW and HIGH voltage on the LED.
Link to video, link to code.

Circuit 3: RGB LED

CIRCUIT 3: This circuit contains a colored LED. The multi-color LED has four pins, one representative of red, green, blue and finally the GND. The Pin representative of red is connected to pin 9 with a 330 ohm resistor, green is connected to pin 10 with a 330 ohm resistor, blue is 11 with a 330 ohm resistor, and GND is set to GND. The code uses a for loop to change the color of LED.
Link to video, link to code.


Side Fun:
In addition to using LEDs to show light, I began exploring how they can also pick up light data from the outside. Some LEDs are better for this then others (like IR), but here is my simple test. I will be posting a link later tonight/tomorrow.


READING FEEDBACK: A Brief Rant On The Future Of Interaction Design
While I agreed with parts of this article, such as the definition of a tool. Technology is a too and it addresses the needs we utilize it for. A common problem that often happens today is that we use technology when it is not needed. The argument of having something physical and not plastic doesn’t really hold water in my eyes. The plastic is a style not the technology. This technology could be applied to anything and will withstand time. The style, however will not. (i.e who can remember when the white apple clam shells were all the rage?) Honestly, while hands may be the next wave of technology, I feel that wave of touch is now. I believe the next wave will be based on biometric sensors, and bci. (As we see with Apples new iWatch).

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