10. Case 02: Make A Shape#

../../_images/case02.png

10.1. Introduction#

Hi, after the learn of the first lesson, I am sure you understand the programming for Ring:bit car in a quite simple way, let’s move on by making the car run along with a shape.

10.2. Hardware Connection#

Just as what we do in the first lesson, connect the left wheel servo to P1 of the Ring:bit expansion board and the right wheel servo to P2.

../../_images/case.png

10.3. Software Programming#

You should prepare the programming platform ready, if not, please can refer to this essay: Preparation for programming

Sample Projects#

# Import the modules that we need
import board
from ringbit import *
from picoed import *
from time import *

# Set the pins of the servos
ringbit = Ringbit(board.P2, board.P1)

# While true, set the [Ring:bit](https://shop.elecfreaks.com/products/elecfreaks-pico-ed-ring-bit-v2-car-kit-with-pico-ed-board?_pos=2&_sid=18032a345&_ss=r) car run along with a square-like routine
while True:
    ringbit.set_speed(-100, -100)
    sleep(1.5)
    ringbit.set_speed(-50, 0)
    sleep(1.2)

Details of program:#

Import the modules that we need. board is the common container, and you can connect the pins you’d like to use through it; ringbit module contains classes and functions for Ring:bit smart car operation; picoed module contains the operation functions to button A/B and time module contains the operation functions to time.
```
import board
from ringbit import *
from picoed import *
from time import *
```
Set the pins of the servos.
```
ringbit = Ringbit(board.P2, board.P1)
```

Set the Ring:bit car run along with a square-like routine.

while True:
    ringbit.set_speed(-100, -100)
    sleep(1.5)
    ringbit.set_speed(-50, 0)
    sleep(1.2)

10.4. Result#

The car runs along with a square-like routine.

10.5. Exploration#

If we want the Ring:bit car to travel with a square pentagon routine, how can we program it?

ELECFREAKS WIKI

Case 02: Make A Shape

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