Before you can code python for your final robotics project you need an IDE that will upload the code for you, unfortunately it's a little clunky to use VS code still. You can download and install Mu on school computers luckily! So download and install it from this link:

Download Link 

Once you've run through the installer you can open it up and plug the microbit into your computer. Mu should detect it but if not select mode in the top left then select BBC Microbit in the pop up window:

Now to send to code to your microbit you need to flash it. Do this by clicking the flash button while the microbit is plugged in. You will see the yellow LED indicator blink then turn solid. 

To start the code click REPL on Mu IDE, then press the reset button on the microbit. (it's the black button on the back where the micro usb port is). You should see one LED blink, then another one will blink. This indicates that we have successfully uploaded code to our microbit.

If you got this far congradulations! you've programmed your microbit and are ready to move onto the next section.

In order to get your car to drive you'll first need to teach it to see. The robot's sight is actually two IR (infrared) sensors which detect saturation levels. If you take a digital reading it's either a 0 or a 1. An analogue signal will measure the level more accurately from 0 (white) to 1023(black), but can read different saturations between the two.

Line 2: imports the microbit library so that your python code can communicate with the microbit.
Line 5: a variable to save the readings from our IR sensors.

Line 11: reads the left IR sensor and saves the value in a variable.
Line 13: outputs the left analogue IR signal that was saved

Line 15: delays the loop so it checks the reading once every 0.2 seconds.
NOTE: the microbit can only cycle (loop) at max 100ms or once every 0.1 second

Exercise:

Make a second variable and have it read the analogue signal from the right IR sensor. It's connected to pin2 instead of pin1. Have it output both the left and right readings. If you complete this then you are ready to move onto the next section.

DC Motors (wheels)

So you have your robot able to see, but not yet able to walk. To do this we need to make the motors run. To make motors run we need to download the library from here:

Download link for driver

Motor_Upper_L method:

Motor_Upper_L(1, 100) -> the first number indicates clockwise (1) or counter clockwise(0), the second determines the signal strength. The max is 255, off is 0.

Servo Motor (eyes)

The ultra sonic sensors are on a platform mounted to the servo, so that the car can turn and "look" different ways. With microbit we can set the angle the servo is looking. There's other (more accurate) ways to tell the servo to turn a set amount but we'll just focus on angle.