Beginner

The topics discussed in this category or for entry-level users.   The topics discussed here are single components, or how to get started with microprocessors.


Calculating Current

Introduction to Calculating Current (Amps) In the last post, we discussed how to calculate resistance.   If you are unfamiliar with calculating resistance, please review the post before continuing.  In this post, we will learn to calculate current. We talked about a variable resistance being similar to the water faucet Read More »

amps 3 r s p

Calculating Resistance

Introduction to Calculating Resistance (Ohms) In this section, we will be calculating Resistance in series and parallel circuits.  A resistor is one of the most basic components of electrical circuits.  The unit of resistance is called an Ohm.   It’s purpose is to restrict the flow of electrons.  To relate this to Read More »

Resistor

Photoelectric Resistor

Introduction to the photoelectric resistor The photoelectric sensor can be used to detect the intensity of a light source.  This can be used to detect night and day such as you would see in a night light in your house, or a security light on your garage.   In industrial applications, Read More »

Photo Resistor

Ultrasonic Distance Sensor

Introduction to the Ultrasonic Distance Sensor The HC-SR04 ultrasonic distance sensor has a variety of applications: 1)  It can be used in robotics for a robot to detect the distance to an object that it needs to avoid. 2)  The sensor can be used to measure the water level in Read More »

Ultrasonic Distance Sensor

Hall Effect Sensor 2

Introduction to the Hall Effect Sensor A hall effect switch is a component that provides an output based on the strength of a magnetic field.   This can be used for many applications, such as a simple alarm on a door or window. More complex applications would include the speed or direction Read More »

Hall Effect Hookup

Getting Started with Microprocessors

Introduction to Arduino (Microprocessor Introduction) This document will give you a Microprocessor Introduction to the Arduino Uno.  There are other variants of this board, such as the Mini, Nano, Yun, Leonardo, and Esplora.    In addition, there are many off brand products such as Einsboard and Funduino.   Although the Read More »


What is a Transistor?

Introduction In short, a transistor is a switch.    This is much like the switch you use to turn on the lights in your home, but with a lower DC voltage, and a smaller amount of current (amps).    Instead of the switch being physically moved to turn a load Read More »

Transistor ON