ok here I explain about tinybit and microbit this is tinybit is the body and microbit is the brain and how to use it and the details tinybit has a sensor to detect lines or obstacles and of course there is a battery there is also a light in front and an ultrasonic sensor and also to move using a tire inside which there is a motor and there is also an on / off button.
microbit.microbit is used to download programs to tinybit and can use the makecode application