January 2015
Beginner
284 pages
6h 26m
English
Content preview from Learning Lego Mindstorms EV3Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Motors
The EV3 kit comes with two large motors and one medium motor. Beyond the packaging, there are some other important differences between the large motor and the medium motor. The following list compares the features of the large and medium motor:
- Large motor maximum speed 170 rpm
- Medium motor maximum speed 250 rpm
- Large motor torque when rotating 0.21 N∙m (Newton-meters is a unit used to measure torque)
- Medium motor torque when rotating 0.08 N∙m
- Large motor torque at standstill 0.42 N∙m
- Medium motor torque at standstill 0.12 N∙m
- Large motor mass is 76 grams
- Medium motor mass is 36 grams
The large motor will be excellent to power the drive train of our robot, and if you need the extra speed, you can always gear the motors up. If you need more torque, ...
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