Cyber:bot Servo and Control Flashcard

Front

How do cyber:bot servos differ from LEDs in terms of current?

Back

Servos need continuous pulses of current with rests, while LEDs need a digital write command

Front

What does the command bot(18).servo_speed(-75) do?

Back

It sends a command to the servo connected to pin 18, turning it clockwise

Front

If bot(18).servo_speed(-75) turns the left servo clockwise, what will bot(18).servo_speed(75) do?

Back

Turn the servo counterclockwise

Front

What is the purpose of the cotter pin in mounting the wheels?

Back

To secure the tail wheel to the chassis

Front

Which pins control the right and left servos, respectively?

Back

P19 and P18

Front

What does bot(18).servo_speed(0) do?

Back

Sets the servo to neutral, stopping the servo

Front

What could be the problem if your program tries to turn the right wheel but the left wheel turns instead?

Back

The pins are reversed in the code or the servos are plugged into the wrong headers

Front

What is a piezoelectric element?

Back

A crystal that changes shape when voltage is applied to it

Front

What causes the piezoelectric crystal to vibrate?

Back

Applying high and low voltages at a rapid rate

Front

What is one use of piezoelectric elements besides speakers?

Back

Creating voltages at frequencies that function as clock oscillators