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Author: LornaLynch

motors.md

@@ -1,10 +1,10 @@
 # Motors
 
-Motors are great for physical computing - they allow you to turn a wheel forwards and backwards, or make something spin around.
+Motors are great for physical computing: they allow you to turn a wheel forwards and backwards, or make something spin around.
 
-A motor cannot be controlled directly from the Raspberry Pi's GPIO pins, because it needs a variable supply of 5 volts and it needs powering separately. However, motor controller add-on boards can be used to provide this functionality.
+A motor cannot be controlled directly from the Raspberry Pi's GPIO pins, because it needs a variable supply of 5 volts. This means you need to power it separately. However, motor controller add-on boards can be used to provide this functionality.
 
-In this guide, you'll be controlling two motors from your Raspberry Pi using Python on the desktop. First, it's best just to learn how to control the motors, then once you have it working you could easily use your code to drive a Raspberry Pi-powered robot, by detaching the monitor, mouse and keyboard and building a robot around a chassis.
+In this guide, you'll be controlling two motors from your Raspberry Pi using Python on the desktop. First, it's best just to learn how to control the motors. Then, once you have them working, you could easily use your code to drive a Raspberry Pi-powered robot by detaching the monitor, mouse and keyboard and building a robot around a chassis.
 
 ## H-Bridge