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DC motor (tethered)

Note: These tips and tricks correspond with the DC motor (tethered).

If you have the previous version of the DC motor Bits [o5], click here.

 

HOW TO USE

 

THE BASICS

The DC (or “direct current”) motor rotates a shaft when you send it a signal. The CW/ VAR/CCW (clockwise, variable, and counter-clockwise) switch controls the direction it rotates. In variable mode, the amount of signal voltage the motor receives from an analog input, like a slide dimmer, allows you to control the speed and direction of the motor.  

DC1

MOUNTING SOLUTIONS

The tethered motor can be oriented in any direction and pressed onto littleBits mounting boards and shoes. For a more permanent mounting solution, you can use screws to secure the motor to a surface with the mounting holes. The mounting holes are also designed to fit with Actobotics™ parts.

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MECHANICAL ATTACHMENTS

motorMate

The motorMate makes it easy to attach paper, cardboard, LEGO axles, and lots of other materials to the DC motor. Simply slide the motorMate onto the “D” shaft on the motor.  Click here to learn more about the motorMate.

DC3

Wheels

You can attach any wheel with a 3mm d-shaft hole to the DC motor. Find wheels of varying sizes at Pololu. When placing the wheel on the motor, make sure that The flat edge of the hole on the wheel lines up with the flat edge on the shaft of the DC motor.

DC4

WIRELESS CIRCUITS & o25 DC MOTOR IN VARIABLE MODE

When turning on a wireless circuit that has DC motors in variable mode on the receiver end [like bitBot and Rotolamp], you may find that when you turn off your transmitter circuit, the wheels on the receiver circuit keep running. This is actually not wrong. This happens because your DC motors are set to variable mode. When the wireless transmitter is off, the wireless receiver assumes that it is receiving a ØV signal. As seen above, in variable mode, a ØV signal causes the motor to rotate clockwise (“cw”) at full speed. If you don’t want this to happen, just turn off the receiver circuit before you turn off the transmitter.

DC5

FUN IDEAS

  • Try inventing a Windmill for simple use of the DC motor & mechanical arm.

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  • Turn the wheel on its side to create a spinning mount or even a RotoLamp!

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