_________ elements can make something happen in the world such as motion, light or sound.
__________ elements can detect something happening in the world.
The Hummingbird __________ require extra power (more than usb cable provides) to be able to work.
The black wire always goes in the ________ port.
Sensors (sound, light, motion, rotary, etc) are considered _____________.
Why is the LED not turning on?
Look at the picture. I have the servo motor programmed correctly. Why won't it run?
What is the item shown?
What item is shown below?
What type of item is shown below?
What is the difference between to two parts shown below?
What will happen in this block of code?