This tutorial takes the next step towards understanding how a bunch of resistors and transistors turn into a real computer.

Previously we created gates and now we will use them to create both a 1 Bit & a 4 Bit Binary Calculator on a breadboard. I’m using a NAND 7400 IC to create an XOR Gate. I’m using a 4 Bit Binary Adder 74LS283 IC to create that circuit. The circuit diagrams can be found below. Continue reading Arduino 7 Binary Calculator Circuit →

After the last video many people asked me how to read schematic diagrams so this time I’ll walk you through the process of taking a schematic diagram to a finished circuit. This time we will be creating a NAND Gate. NAND Gates are awesome because they can be used to build all the other gates. They are the basic component from which a computer is made.

I have a drawing of the circuit below to help you. I hope you enjoy this video. Continue reading Arduino 6 : Read Schematic Diagrams →

My most active subscriber asked me to show how to make a calculator with circuits and so I begin that journey with this video. To make a calculator you need to understand Transistors as well as Transistor Gates. I make 4 circuits, one to demonstrate how transistors work as well as NOT, OR 7 AND Gates. The designs can be found below along with the code I used in this video. Continue reading Arduino Tutorial 5 →

In this part of my Arduino tutorial we’ll create 2 separate projects. First we’ll learn how 7 segment displays work and then create a dice simulation rolling circuit. We’ll then learn how to create a theremin, which is a weird instrument you can play without touching it. In addition we’ll learn about photoresistors, importing libraries, voltage dividers, map and much more.

All of the code follows the video below. Continue reading Arduino Tutorial 4 →

In the last video I asked for requests so in this video I cover those requests. I’ll make both a Proximity Sensor and a Piano using an Arduino. Here is the kit I’m using.

We’ll learn about Ultrasonic Sensors, How Sound is Turned into a Current, Passive Buzzers and much more. All of the code is below. Continue reading Arduino Tutorial 3 →