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​​11162016 - Caitlin Morris - Electronics - Class 01

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​​Showing work

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​​Class intros

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​​Why choose one technology over another?

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​​What can you do in the built world that can’t be done digitally virtually?

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​​microcontrollers 

• ​​generally an IC - an IC will have many many circuits on one small chip

• ​​has a processor, memory, and a programmable input/output

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​​anatomy of the arduino

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• ​​pins

• ​​tx/rx - serial transmit/receive

• ​​vin - a direct feed from whatever wall power is plugged in. can be 9v or 12v

• ​​14 digital pins

• ​​pulse width modulation - a pseudo analog way of communicating

• ​​digital pins are either high voltage or low voltage. meaning - each pin can either send 5v or 0v. binary

• ​​arduino IDE - looks like processing but there are some important differences

• ​​digital pin interactions

• ​​pinMode(pin, mode)

• ​​digitalRead(pinNumber)

• ​​digitalWrite(pinNumber, value)

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​​blink blink - let’s make a blinking LED!

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​​drawing the schematic

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​​on digital out pin 13, there’s a built-in resistor. you can use it to test LEDs.

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​​Pulse Width Mod

• ​​For ex:

• ​​0% Duty Cycle = analogWrite(0)

• ​​25% Duty Cycle = analogWrite(64)

• ​​50% Duty Cycle = analogWrite(127)

• ​​75% Duty Cycle = analogWrite(191)

• ​​100% Duty Cycle = analogWrite(255)

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​​you can use the digital pins as a “signaler” from one arduino to another

• ​​can sync logic systems across arduinos. “a logic waterfall”

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​​Inputs - all sorts of fun things such as range finders, photocells, force sensors, etc