led - Grant Winney

6 Results tagged on "led":

Feb 17, 2017

What is "charlieplexing"? (a short demo using the Raspberry Pi)

On past projects, when I needed multiple LEDs, I just connected each to its own GPIO pin. I knew the current only worked in one direction, but I didn't think to take advantage of that fact. Charlieplexing is a method for arranging multiple LEDs so as to use the minimal number of pins possible....

raspberry pi pulse width modulation led 52 weeks of pi raspberry pi 2

Aug 29, 2016

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...

raspberry pi pulse width modulation led python 52 weeks of pi raspberry pi 2

Aug 22, 2016

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, you’re likely to end up with one or...

raspberry pi morse code circuit led

May 19, 2016

Generating Morse Code on the Raspberry Pi Using a Button on a Breadboard

I created a morse code generator before based on entering a string at the console. Now I extended it to generate a message with a button click....

raspberry pi morse code circuit led

Apr 03, 2016

Building a Morse Code Transmitter on a Raspberry Pi

I had made the Raspberry Pi blink an LED a few times, and as thrilling as that had been ;) I wanted to try something different. So I built a morse code transmitter!...

raspberry pi circuit led resistor hello world

Mar 26, 2016

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. A whole new world opens up when you start experimenting with the GPIO pins, which let you interact with other devices and react to the surrounding environment....

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