CODEBOX ADVENTURES WITH PROCESSING AND ARDUINO PDF

When he dug out the device, plugged it in, and restarted the sketch, it worked fine. This illustrates a great point about Processing, programming, and life in general: we live in an imperfect world. Nice little sketches get started with no Arduino plugged in, numbers are divided by zero, people run with scissors, and so on and so forth. In Processing, conditions like these are called exceptions, and this post provides a gentle introduction on how to deal with or, more officially, handle them.

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In a nutshell, the Arduino code example in the book reads data from a light sensor and writes it out to the serial port. This Codebox shows you how to save this sensor data to a Google Spreadsheet. The cool thing is that you can then use any of the goodies that Google provides charts, gadgets, maps, etc directly with your data. Thanks, Jer! Create your spreadsheet The first step in the project is to set up a Google Spreadsheet.

Then save the spreadsheet. Leave it open, though. Set up the sketch Next, a bit of housekeeping. The Google data client libraries use generics and other goodies introduced in Java 1. Must match exactly, including case. Note that this is an older version of the documentation. Finally, it pulls out the first worksheet these are the various tabs in the spreadsheet and saves it for future use. From there, the sketch drops into the draw method, which uses a timer to periodically call the transmit function.

It starts by creating a couple of strings that hold the current date and the time, and then creates a new ListEntry, which is the primary data class used to interact with worksheets. The class method getCustomElements. But, there are a lot of possibilities, nevertheless. All of the Codebox columns can be found here In the Maker Shed: Getting Started with Processing Learn computer programming the easy way with Processing, a simple language that lets you use code to create drawings, animation, and interactive graphics.

Programming courses usually start with theory,but this book lets you jump right into creative and fun projects. Related Stories from Make:.

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Codebox: Use QR codes in Processing

Although Processing has a great contributed library called QRCode , the ZXing is much faster and can do recognition in realtime. About QR Codes Before jumping into the code, a bit of background. A QR code has two basic parts — the three positioning elements, which are the large square blocks at the three corners, and the data elements, which is everything else. The data elements represent the encoded data. The code also has some information used for error correction. The following image should give you the basic idea: You can use a site like Kaywa to generate the code.

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Codebox: Save sensor data to Google Spreadsheets

Fegor Click here for more photos. In the meantime while conversion is taking place, we can do other stuff. There is just one open question: A ready that should take ms will implement a wait of ms?! To see and give commands to the whole world is almost the same as being everywhere. In AutoMage mode see belowglsand b are automatically set.

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Introducing Getting Started with Processing and our new series, Codebox

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