Circuit Playground Express
Here’s the algorithm I gave you for your first challenge with the Circuit Playground Express:
On Start
Show all red lights
When Pin is touched then
Person is human!
Show all green lights
Pause for 3 seconds
Clear the lights
Show all red lights

micro:bit
Your first Expert Level challenge! How did it go? This was the algorithm I gave you to work on:
And this is what I came up with as an answer
On Start
Show a Cross
When Pin is touched then
Person is human!
Show a Tick
Pause for 3 seconds
Clear the screen
Show a Cross

Raspberry Pi
I gave you an algorithm to use the turtle library to draw a cross and tick on the screen. Here’s the algorithm:
On Start Show a Cross If Pin is touched then Person is human! Show a tick Pause for 3 seconds Clear the screen Show a cross
And here’s my code to solve the problem. But I bet you could improve it!
import time
import turtle
from savetheworld import touch
#setup the arrow
myArrow = turtle.Turtle()
myArrow.color("blue")
myArrow.pensize(20)
#draw a cross
myArrow.left(45)
myArrow.forward(100)
myArrow.penup()
myArrow.left(135)
myArrow.forward(71)
myArrow.left(135)
myArrow.pendown()
myArrow.forward(100)
while True:
phatStatus = touch.touched("Any")
if phatStatus:
print ("Button pressed")
#draw a tick
#clear the screen
myArrow.clear()
#draw a tick
myArrow.left(180)
myArrow.forward(50)
myArrow.backward(50)
myArrow.right(90)
myArrow.forward(100)
#pause for 3 seconds
time.sleep(3)
#clear the screen
myArrow.clear()
#show a cross
myArrow.left(45)
myArrow.forward(100)
myArrow.penup()
myArrow.left(135)
myArrow.forward(71)
myArrow.left(135)
myArrow.pendown()
myArrow.forward(100)