Building iPhone and iPad Electronic Projects: Real-World by Mike Westerfield PDF

By Mike Westerfield

ISBN-10: 1449363504

ISBN-13: 9781449363505

Why easily play tune or log on for those who can use your iPhone or iPad for a few rather enjoyable tasks, akin to construction a steel detector, hacking a radio regulate truck, or monitoring a version rocket in flight? construct those and different cool issues by utilizing iOS gadget sensors and cheap corresponding to Arduino and a Bluetooth Low strength (LE) Shield.

This hands-on e-book indicates you ways to jot down uncomplicated purposes with techBASIC, an Apple-approved improvement surroundings that runs on iOS units. through the use of code and instance courses outfitted into techBASIC, you’ll write apps at once in your Apple gadget and feature it engage with different hardware.

• construct a steel detector with the iOS magnetometer
• Use the HiJack platform to create a plant moisture sensor
• placed your iPhone on a small rocket to gather acceleration and rotation data
• Hack a radio regulate truck with Arduino and Bluetooth LE
• Create an arcade online game with an iPad controller and iPhone paddles
• regulate a sweet computer with an iOS equipment, a micro servo, and a WiFi connection

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Extra resources for Building iPhone and iPad Electronic Projects: Real-World Arduino, Sensor, and Bluetooth Low Energy Apps in techBASIC

Sample text

As you saw when you tried the program, pressing Send doesn’t actually send the email, it just gets it ready and presents the mail message to the user. This gives the user a chance to address the email and send it manually. It might seem nice if you could skip that step, addressing the email and sending it without user interaction. Apple blocks that action, though, and I think appropriately so; this ensures that rogue programs cannot collect and send information without the user’s knowledge. ! !

10 10 10 ! Initialize the plot and show it. setPointColor(0, 0, 1) ! Set the plot range and domain. This must be done ! after adding the first PlotPoint, since that also ! sets the range and domain. setView(-10, -10, 0, 10, 0) ! Show the graphics screen. Pass 1 as the parameter ! for full-screen mode. showGraphics(1) ! Lock the screen in the current orientation. setAllowedOrientations(orientation) ! Set the plot size. height - 47) ! Draw the background. height) ! Set up the user interface. width - 266, h, "Send") !

It turns out that to find true north you need to know the direction of magnetic north and the location you are at! Figure 3-1 provides a map that shows the declination of the Earth’s magnetic field, which is the difference between magnetic north and true north. The zero lines, like the one running almost vertically through North and South America, are the lucky locations where magnetic north and true north are aligned. For positive declination, like the area covering most of the Pacific Ocean, the magnetic field is a little east of true north; for negative declination, like the lines covering the Atlantic Ocean, it is a little to the west.

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Building iPhone and iPad Electronic Projects: Real-World Arduino, Sensor, and Bluetooth Low Energy Apps in techBASIC by Mike Westerfield

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