Monthly Archives: July 2013

Raspberry Pi LogoHow To Use A MCP23017 I2C Port Expander With The Raspberry Pi – Part 3

In How To Use A MCP23017 I2C Port Expander With The Raspberry Pi – Part 2 I explained how to use an MCP23017 16-bit port expander to provide additional outputs. In this article I’ll show a basic input example where … Continue reading

Posted in Hardware, Python | Tagged , , , | 23 Comments

Raspberry Pi LogoHow To Use A MCP23017 I2C Port Expander With The Raspberry Pi – Part 2

In How To Use A MCP23017 I2C Port Expander With The Raspberry Pi – Part 1 I explained how to configure your Pi to use I2C so you could connect an MCP23017 16-bit port expander to it. If you’ve followed that … Continue reading

Posted in Hardware, Python | Tagged , , , | 2 Comments

Raspberry Pi LogoHow To Use A MCP23017 I2C Port Expander With The Raspberry Pi – Part 1

For all of my projects I have used the standard GPIO header pins as inputs and outputs. This gives you a total of 17 pins to play with but what if you need more? The easiest way of getting more … Continue reading

Posted in Hardware, Python | Tagged , , , | 16 Comments

Raspberry Pi LogoRunning A Python Script At Boot Using Cron

There maybe times when you want to run a Python script when your Raspberry Pi boots up. There are a number of different techniques to do this but I prefer the method that uses “cron”. Cron is a job scheduler … Continue reading

Posted in Python, Raspbian | Tagged , | 31 Comments

Raspberry Pi LogoRaspberry Pi Accessories – Poundworld Specials

Since they opened a Poundworld a mile from my house I can’t help but pop in there and see what they’ve got when I’m passing. It’s a relaxing shopping experience because there are no surprises. You never pick something up … Continue reading

Posted in Hardware | Tagged , | 4 Comments

Raspberry Pi LogoMacro Photography With The Raspberry Pi Camera Module

In a recent article I mentioned how you can add cheap interchangeable lenses to your Raspberry Pi camera to make it more versatile. I’ve now played around with the macro lens and thought I’d show you a set of photos … Continue reading

Posted in Camera Module | Tagged , , | 3 Comments

Raspberry Pi LogoRAVPower 10400mAh Li-on Battery Power Bank Test

One of the great things about the Raspberry Pi is that it is easy to go portable. What is even better is that because the Pi can accept 5V it will work with lots of power accessories designed for mobile … Continue reading

Posted in Hardware, Power | Tagged , , , , | 10 Comments