Practical Arduino: Cool Projects for Open Source Hardware (Technology in Action)

Practical Arduino: Cool Projects for Open Source Hardware (Technology in Action)

Jonathan Oxer, Hugh Blemings

Language: English

Pages: 456

ISBN: 1430224770

Format: PDF / Kindle (mobi) / ePub


Create your own Arduino-based designs, gain in-depth knowledge of the architecture of Arduino, and learn the user-friendly Arduino language all in the context of practical projects that you can build yourself at home. Get hands-on experience using a variety of projects and recipes for everything from home automation to test equipment.

Arduino has taken off as an incredibly popular building block among ubicomp (ubiquitous computing) enthusiasts, robotics hobbyists, and DIY home automation developers. Authors Jonathan Oxer and Hugh Blemings provide detailed instructions for building a wide range of both practical and fun Arduino-related projects, covering areas such as hobbies, automotive, communications, home automation, and instrumentation.

  • Take Arduino beyond "blink" to a wide variety of projects from simple to challenging
  • Hands-on recipes for everything from home automation to interfacing with your car engine management system
  • Explanations of techniques and references to handy resources for ubiquitous computing projects

Supplementary material includes a circuit schematic reference, introductions to a range of electronic engineering principles and general hints & tips. These combine with the projects themselves to make Practical Arduino: Cool Projects for Open Source Hardware an invaluable reference for Arduino users of all levels. You'll learn a wide variety of techniques that can be applied to your own projects.

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else if(data == PS2_KC_KMULTI) { Serial.print("*"); } else if(data == PS2_KC_NUM) { Serial.print("[NUMLOCK]"); } else if(data == PS2_KC_BKSP) { Serial.print("[BACKSPACE]"); } else { If the check makes it through to this point it means the keycode hasn’t matched any of the known special keys, so the sketch then prints it directly to the host. Serial.println(data, HEX); } } } Load up the sketch, compile it, upload it to your Arduino, make sure your keyboard is plugged in, and activate the serial

Variations.........................................................................................................................98 Visual Display Written in Processing ...................................................................................................... 98 Home Security System ........................................................................................................................... 99 Multiple Buttons on One Input

100K pulling it down, so the voltage applied to the input will be (100 / (20 + 100) × 5, or about 4.17V. The third button sets up a voltage of about 3.84V, the fourth about 3.57V, and so on. You might notice that for each subsequent button the voltage difference between it and the previous switch decreases, making it increasingly difficult to distinguish between them on the analog input. To increase the voltage separation as you move further down the chain, it’s necessary to progressively

argument for the page and the other argument for the device ID), you could make another version of this function to process the other argument: int8_t analyse_cmd (char *str) { int8_t r = -1; if (find_key_val (str,"cmd")) { if (*strbuf < 0x3a && *strbuf > 0x2f) { // is a ASCII number, return it r = (*strbuf-0x30); } } return r; } The function to print the web page with the sensor data is long, but that’s only because it’s very repetitive; the structure of the function is quite simple. Before any

places. Then, as CPU power continued to increase rapidly, speech synthesis was moved to being a software function. Nowadays, of course, it is almost always done entirely with software in the main CPU, using only a tiny fraction of the available processing power. As a result the SPO256 became unnecessary, dropped out of production, and became a footnote in the history of technology. This leaves Arduino developers in a quandary, because in terms of processing power the ATMega chips put us back into

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