Twitter

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In the third experiment provided by OCR (credit @Rob_Bishop ) you are shown how to interact with Twitter via the API.

Light Sensor

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This project shows how the Arduino can monitor light values using a Photo Resistor and adjust a LED in response.

Feedback

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Getting helpful feedback from MySQL when it errors is possible if you use the following:

Relationships

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Dealing with relationships in MySql is not as straightforward as either MS Access or as you would have hoped for. Creating simple primary keys isn’t too difficult

However foreign keys are more complex and require the following code in the table creation code:

This will ensure that you can only add foreign_ids when […]

Tkinter Events

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Tkinter employs a type of programming called Event-Driven which means that the program runs in a endless loop waiting for things (events) to happen.  In order for the program to respond to these events it needs to know what to listen for.   We bind events to methods which tells the computer that in the event […]

Time

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Many programs require some sort of date time facility. Python DateTime, Date and Time libraries make it very easy to manipulate time.

Larsen Scanner

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This project gets its name from Glen A. Larsen who wrote the Knight Rider TV Series.

Zumo Robot

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The Pololu Zumo Robot is a dual motor rubber tracked robot that fits inside the 10cm x 10cm rule for Mini Sumo Robot Competitions.

Zumo Buzzer

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The Zumo Robot shield comes with a buzzer that can be used to signify events or actions.

Turtle

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Python Turtle is based on the Logo Programming Language that has been used as a popular way of teaching children programming for many years.

Zumo Motors

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The Zumo Shield libraries provide basic motor operation consisting of PWM speed control and direction.  Packages and installation instructions can be downloaded from GitHub but once installed the motors library can be included from Sketch > Include Library. Lastly you must create an instance of the ZumoMotors class with:

Each the following available methods […]