Posts in Tutorial
Tutorial: How to measure current consumption and why should you do it?

A lot of makers don't know how important it is to know the current draw of your project, or why you need to know this. In this tutorial I will explain to you how to measure the current draw of your project, and why it is so important to know this.

I often get asked the question of what type of power supply to use for projects. Most of us know the voltage required, but how much current it draws and why you need to know this is a mystery to many beginner makers. To start with what is this current thing?  "In comes the analogy that uses the flow of water to explain these things".  

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Tutorial:Storing WiFi Configuration On Your ESP8266 Using The EEPROM Library Made Simple Part 2

This is Part 2 of a 2 part tutorial that will simplify the way you can store your WiFi configuration on an ESP8266 using the EEPROM library. With this knowledge you can then build Internet Of Things (IOT) projects that can be configured by web form. This will enable to change passwords or IP configuration when needed without having to recompile your sketch.

In part 2 you will learn howto read information "your stored in memory in part one" out of memory. How to use it to configure your IOT device to connect to your WiFi network, and make it user configurable by combining Part 1 and 2 in one sketch

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Tutorial:Storing WiFi Configuration On Your ESP8266 Using The EEPROM Library Made Simple Part 1

This tutorial is part 1 of 2 that will simplify the way you can store your WiFi configuration on an ESP8266 using the EEPROM library. With this knowledge you can then build Internet Of Things (IOT) projects that can be configured by web form. This will enable to change passwords or IP configuration when needed without having to recompile your sketch.

In part 1 we learn how to write the information to your IOT project, part 2 will teach you how to read this information out of memory and configure your IOT project so it can connect to your WiFi router

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Halloween Hack: How to automatically activate your Halloween Arduino Project

Halloween Hack: How to automatically activate your Halloween Arduino Project

With Halloween coming around the corner it is time to see how we can automate some scary projects. We are going to explore two of my favourite ways to do this. First we are going to look how to integrate a pressure plate switch (a big push button you step on which we are going to build), then we will look at how to connect a motion sensor (Passive Infrared Sensor or PIR) to your scaretastick project for the maximum scare factor. I recommend you also watch the video below to get the most out of this tutorial.

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Tutorial: Using Interrupts to improve the functionality of your Arduino projects

A couple of weeks back I wrote a short tutorial on using timers instead of delay() functions to make your Arduino projects more responsive to input from buttons and sensors. Using interrupts is a different way to achieve the same result. By attaching an interrupt to a digital pin the Arduino will halt what it is doing to handle the input as it happens making your project more responsive. 

EXPLAINING WHAT AN INTERRUPT IS AND DOES.

Let’s say you are listening to your music with your noise canceling headphones on. At that point somebody calls you on your cell phone. Of course you don’t hear your phone ring as your music is loud and you are distracted by it. Luckily there is someone in the room with you who hears the ringing. This person pokes you in the side to let you know that your phone is ringing and tells you can answer it.

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Tutorial on creating graphics for the Nokia 5110 LCD using an Arduino and the Adafruit library

Creating graphics for the Nokia 5110 display using an Arduino and the Adafruit Library

I use the Nokia 5110 display in many of my projects. It is inexpensive and reliable. I also use the  Adafruit library for this display as it is easy to use and feature rich. The only issue I had with this library was displaying icons and other graphics on it.

All the tutorials I could find dealt with how to concert a bitmap to a format this display could use were with a utility called LCD Assistant. And this does not work with the Adafruit library. This tutorial will take you through the steps how to create graphics using the Adafruit Library

 

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