Monthly Archives: August 2012

Sending SMS Text Messages Using Python

Posted on August 30, 2012 by Matt

For one of my Pi projects I wanted the ability to send SMS text messages from a Python script. These messages would be sent to my mobile phone and alert me about specific events recorded by my Pi. There was … Continue reading →

Posted in Python, Software, Tutorials & Help | Tagged , , , , | 9 Comments

Reading Analogue Sensors With One GPIO Pin

Posted on August 13, 2012 by Matt

Unlike some other devices the Raspberry Pi does not have any analogue inputs. All 17 of its GPIO pins are digital. They can output high and low levels or read high and low levels. This is great for sensors that … Continue reading →

Posted in Hardware, Python, Tutorials & Help | Tagged , , , , , | 7 Comments

20×4 LCD Module Control Using Python

Posted on August 9, 2012 by Matt

This article is based on my previous article 16×2 LCD Module Control Using Python and 16×2 LCD Module Control With Backlight Switch. 20×4 LCD modules are relatively easy and cheap to obtain. They have the same 16 pin interface as the 16×2 … Continue reading →

Posted in Hardware, Python, Tutorials & Help | Tagged , , , | 7 Comments

16×2 LCD Module Control With Backlight Switch

Posted on August 3, 2012 by Matt

Following on from my article about controlling a 16×2 LCD module with Python and a Raspberry Pi I decided to make a few enhancements. These included : Adding a 10Kohm variable resistor to adjust the contrast Adding a 5Kohm variable resistor … Continue reading →

Posted in Hardware, Python, Tutorials & Help | Tagged , , , , , | 5 Comments