Computer Club Meeting Notes: 11-03-2015

Today we will be working on the Button Project.  This Project led us to the “Guess What Number I’m Thinking” project.  Keep in mind that in the Guess What Number I’m Thinking project the Arduino will select a number from 1 to 4 and using the 4 buttons you will attempt to guess what number the Arduino has thought of.

The following is a diagram for how to wire the Arduino and components for this project:

Project 5 - Push buttons Diagram

The code for the project is as follows:

SparkFun Inventor's Kit
Example sketch 05
This sketch was written by SparkFun Electronics,
with lots of help from the Arduino community.
This code is completely free for any use.
Visit for SIK information.
Visit to learn about the Arduino.
Version 2.0 6/2012 MDG

// First we'll set up constants for the pin numbers.
// This will make it easier to follow the code below.

const int button1Pin = 2; // pushbutton 1 pin
const int button2Pin = 3; // pushbutton 2 pin
const int ledPin = 13; // LED pin

void setup(){
      // Set up the pushbutton pins to be an input:
     pinMode(button1Pin, INPUT);
     pinMode(button2Pin, INPUT);
     // Set up the LED pin to be an output:
     pinMode(ledPin, OUTPUT); 

void loop(){
 int button1State, button2State; 

 // Since a pushbutton has only two states (pushed or not pushed),
 // we've run them into digital inputs. To read an input, we'll
 // use the digitalRead() function. This function takes one
 // parameter, the pin number, and returns either HIGH (5V)
 // or LOW (GND).

 // Here we'll read the current pushbutton states into
 // two variables:

 button1State = digitalRead(button1Pin);
 button2State = digitalRead(button2Pin);

 // Remember that if the button is being pressed, it will be
 // connected to GND. If the button is not being pressed,
 // the pullup resistor will connect it to 5 Volts.

 // So the state will be LOW when it is being pressed,
 // and HIGH when it is not being pressed.
 // Now we'll use those states to control the LED.
 // Here's what we want to do:
 // "If either button is being pressed, light up the LED"
 // "But, if BOTH buttons are being pressed, DON'T light up the LED"

 if (((button1State == LOW) || (button2State == LOW))&&
 !((button1State == LOW) && (button2State == LOW))){

       digitalWrite(ledPin, HIGH); // turn the LED on
       digitalWrite(ledPin, LOW); // turn the LED off

mrcampbell / November 3, 2015 / Computer Club

Computer Club Meeting 10-27-2015

Here is the wrap of our meeting from 10-27-2015.  We reviewed our projects to date and looked at the projects we will be taking on in the next couple of weeks.

  1. Next week we will be working on the “Button Project”
  2. After the “Button Project” we will work on the “Guess the Number Project”
  3. We have two problems to solve:
    • lqef ef s fehzwa fgpflelglevt oezqak. dwsj ef tvm_jv_fejt_gz_sti_iv_lqa_kasw_oqswwatjaf
    • x = raw_input("enter the password");
      y = ""; 
      for c in x: 
               y += chr(ord(c) ^ ord(" "));
      if y == "nottherightcase":
               print "congratz the flag is "+y;
               print "nope";


For our second problem, the language is Python.  Go to for an ASCII table.

and remember ^ = bitwise exclusive or

Computer Club Update 10-27-2015 -> This is the presentation that was used in the meeting.

mrcampbell / October 27, 2015 / Computer Club