Adding Max to the equation...

DMSS5 Wk5

Using variables

• Makes our code more human readable
• Necessary for storing a value
• A variable is a way of naming and storing a value for later use by the program, such as data from an analog pin
• Variables must be declared before use

Just started with some recap on the use of variables and the theory.

Also discussed the notion of the pull-up resistor built into the Arduino pins and the obvious difference from the pull-down resistor. Looks a little something like the diagram below:


As stated in the diagram code is used to open the switch. The full code is below with the line to open the switch in bold.

void setup()
{
pinMode(3, INPUT);
digitalWrite(3, HIGH);
}

void loop()
{
int digiinput = digitalRead(3);
}



Got into Arduino Serail for the first time today (Tuesday) also. Was interesting, and simple what it boils down to is:

• allows Arduino to talk to the computer

Programs to read Arduino Serail include:

1. zterm
2. hyperterminal
3. cornflake (apparantly the best one)
   

New function for use with Serial:
Serial.print(1, BYTE)