Simple turtle graphics script for use with STS-Pi and explorerhat (no pen logic)

turtle.py

#!/usr/bin/env python

# Explorer HAT/pHAT https://shop.pimoroni.com/search?type=product&q=explorer+hat
# STS-Pi https://shop.pimoroni.com/products/sts-pi

import time

import explorerhat

speed = 100
turnCoef = 0.57

def forward(dist):
    motorL(speed)
    motorR(speed)
    time.sleep(dist)

def back(dist):
    motorL(-speed)
    motorR(-speed)
    time.sleep(dist)

def right(deg):
    motorL(speed)
    motorR(-speed)
    time.sleep(deg / 90 * turnCoef)

def left(deg):
    motorL(-speed)
    motorR(speed)
    time.sleep(deg / 90 * turnCoef)

def motorL(speed):
    explorerhat.motor.one.speed(speed)

def motorR(speed):
    explorerhat.motor.two.speed(speed)

while True:
    forward(2);
    right(90);

explorerhat.pause()