Download Motors for Makers: A Guide to Steppers, Servos, and Other by Matthew Scarpino PDF

By Matthew Scarpino

The First Maker-Friendly advisor to electrical Motors!

Makers can do striking issues with vehicles. sure, they’re extra complex than another circuit parts, yet with this publication, you could thoroughly grasp them. when you do, tremendous new tasks develop into attainable.

Unlike different books, Motors for Makers is a hundred% involved in what you are able to do. no longer idea. Making.

First, Matthew Scarpino explains how electrical automobiles paintings and what you must learn about every one significant style: stepper, servo, induction, and linear automobiles. subsequent, he provides precise directions and dealing code for interfacing with and controlling servomotors with Arduino Mega, Raspberry Pi, and BeagleBone Black. All resource code and layout documents can be found that you can obtain from motorsformakers.com.

From begin to end, you’ll examine via useful examples, crystal-clear causes, and images. If you’ve ever dreamed of what you'll do with electrical cars, cease dreaming...and commence making!

  • Understand why electrical cars are so flexible and the way they work
  • Choose the perfect motor for any project
  • Build the circuits had to regulate each one kind of motor
  • Program motor regulate with Arduino Mega, Raspberry Pi, or BeagleBone Black
  • Use gearmotors to get the correct amount of torque
  • Use linear vehicles to enhance velocity and precision
  • Design an absolutely useful digital velocity keep watch over (ESC) circuit
  • Design your individual quadcopter
  • Discover how electrical automobiles paintings in smooth electrical vehicles--with a desirable inside of examine Tesla’s patents for motor layout and control!

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Extra info for Motors for Makers: A Guide to Steppers, Servos, and Other Electrical Machines

Sample text

Therefore, each phase state corresponds to one-sixth of the complete turn, or 60°. If the controller delivers more current, the motor will exert more torque as it rotates. If the pulses’ order and timing is reversed, the motor will turn in the reverse direction. For this reason, BLDC control circuits don’t require the H bridges needed to reverse brushed motors. BLDCs receive power through special switching circuits called voltage source inverters, usually shortened to inverters. note Judging from this figure, it may look as though floating inputs are set to 0 V.

4 Switching Circuitry The preceding chapter explained that the main disadvantage of using electromagnets is power consumption. This is why even small motors may need tens of amps to function properly. The circuitry that governs a motor’s operation is called the controller. In modern systems, this is an integrated circuit. In most maker-focused devices, this is a microcontroller or a low-power processor. These devices run on milliamps, so they can’t directly provide a motor with the power it needs.

17 An inrunner brushless motor Many inrunner motors don’t have iron cores. This reduces the iron loss and increases efficiency, but it also significantly reduces the amount of torque the motor can exert. In addition, inrunner motors generally have a low number of poles (commonly only two). For these reasons, inrunner motors usually aren’t used to turn propellers without attached gearing. Chapter 7 discusses gears in detail. To make up for their low torque, most inrunner motors turn at very high speeds.

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