Projects

Cascading 555 Timers for Custom Blinking LEDs

Cascading 555 Timers for Custom Blinking LEDs

For the past several weeks we’ve looked at blinky LEDs, 555 timers, and resistors. This week it’s time to put it all together into an application. A YouTube subscriber suggested the project as follows: How would you go about having an led blink twice, then […]

555 Timer Output Stage (Lens Detector Part 2)

555 Timer Output Stage (Lens Detector Part 2)

The 555 timer has many uses and in this video we’ll explore two different ways to utilize the output. First we’ll see how the the timer can be used to source and sink current and secondly we’ll look at a way to use the timer […]

How a 555 Timer Works (Lens Detector Part 1)

How a 555 Timer Works (Lens Detector Part 1)

I am slowly in the process of developing another class, but this time I want to go about it a different way. I’m going to be letting everyone else in on the process. The coming class will include a lot of projects, so during the […]

9 Volt, Battery Powered, Telephone Intercom System

9 Volt, Battery Powered, Telephone Intercom System

When I was developing the VoIP Fundamentals course, I wanted a demonstration to illustrate the simplicity of the public switched telephone network. After combing through the internet, I came across this ingenious little project. With just a 9V battery, a resistor, a telephone cord, and a […]

Disgusting Hard Apple Cider Experiment

Disgusting Hard Apple Cider Experiment

Lately I’ve found myself surrounded by amateur brewers. Many of my colleagues and friends have really bought into making their own beer or cider and I’ve been curious about the process. Below is a video of what happens when you have no idea what you […]

How to Build a 4 Hour Table

How to Build a 4 Hour Table

On Thursday morning I woke to the realization that we needed a table in our guest bedroom for a visiting friend. Brandy and I talked about the options and after browsing around the internet, decided to make our own. I have been a big fan […]

How to Cut a Bottle with Fire…Kinda

How to Cut a Bottle with Fire…Kinda

Ever since Thanksgiving there’s been this beautiful, empty olive oil jar at the back of the cabinet. It was slated to be thrown in the trash, but I wanted to try and do something creative with it. In the course of searching for ideas, I […]

Rig It Up: How to Make a Signal Generator from an Old Microphone and Youtube

Rig It Up: How to Make a Signal Generator from an Old Microphone and Youtube

Recently I started a redesign for the Griffin amplifier. Why a redesign? It’s a long story that involved me talking to a lot of smart people. For this newest redesign, I needed my own test equipment, so I dropped a few bucks on this. She’s a beauty […]