Category Archives: Raspberry Pi

Accessing GPIO from a web server

Posted on August 12, 2012 by Mark Ingram

After successfully accessing the GPIO pins from the command line, my next goal was to read and write pin values from a web site. The first step is to install a web server, and the obvious choice would normally be Apache, … Continue reading →

Posted in GPIO, Hardware, LEDs, Raspberry Pi | 3 Comments

Programmable LEDs (Basic)

Posted on July 30, 2012 by Mark Ingram

Having setup an LED to be permanently lit via the 3.3V GPIO pin, the next step is to get the LED to light on demand, via a GPIO control pin. There are several pins to choose from, I used pin … Continue reading →

Posted in Circuits, GPIO, LEDs, Raspberry Pi | Leave a comment

Let there be light! (Update)

Posted on July 20, 2012 by Mark Ingram

Following on from the previous post I have a correction to make. The 270 ohm resistors that shipped with the LEDs aren’t overkill for the 3.3V Raspberry Pi GPIO circuit. There must have been a mistake in the way I built the … Continue reading →

Posted in Circuits, Hardware, Raspberry Pi, Resistors | Leave a comment

Let there be light!

Posted on July 17, 2012 by Mark Ingram

In the beginning… As a budding electronic engineer, where should you start? This might be a question with many correct answers, but I decided to start with a simple single LED circuit. I bought the following equipment to get me … Continue reading →

Posted in Circuits, Hardware, Raspberry Pi | 1 Comment

A journey into hardware

Posted on July 13, 2012 by Mark Ingram

Hello, and welcome! Now, this might be the third or fourth attempt at starting a blog, but I’m convinced this time it’s going to be different – I actually have something to write about! A few weeks ago my Raspberry … Continue reading →

Posted in Hardware, Raspberry Pi | Leave a comment