charlieplexing What is "charlieplexing"? (a short demo using the Raspberry Pi) While I was reading Raspberry Pi Cookbook, I came across a few things that looked interesting to demo. One of them was the concept of “charlieplexing“. On past projects, when I needed multiple
52 weeks of pi Creating a Flickering Candle Using an RGB LED on the Raspberry Pi After getting PWM (pulse-width modulation) to work with an RGB LED last week, I was trying to think of what else I could do with an LED that demonstrated changes in color as
52 weeks of pi How to Use an RGB multicolor LED with Pulse Width Modulation (PWM) on the Raspberry Pi If you buy a kit with random LEDs, wires, switches, etc, like this one I purchased from CanaKit, you’re likely to end up with one or two of those funky little LEDs
52 weeks of pi How to Flash an LED on Your Raspberry Pi When You Get New Email This week we’ll create an email notification system using the Raspberry Pi. The idea is to check for new email, and flash an LED when we get one. Connecting to Gmail The
52 weeks of pi Generating Morse Code on the Raspberry Pi Using a Button on a Breadboard Last time, I created a morse code generator. It took user input from the console, translated it into morse code, and blinked an LED to “transmit” the message. I decided to build on
52 weeks of pi Building a Morse Code Transmitter on a Raspberry Pi Last week, I made the Raspberry Pi blink an LED a few times. As thrilling as that was ;) I almost immediately wanted something more. Note: Source code for this project is available on
circuit Hello World for the Raspberry Pi (Making an LED Blink) I finally unboxed my Pi a few weeks ago, and since then I’ve been learning some Python, which is the primary language of the Pi. You can do fun things with it