Safe

Use the potentiometer to select digits and enter the password to open the safe. If the safe is cracked open, the system will sound an alarm.

Building Instructions

Building Instructions(Right Click->Save As)

Sample Wiring Diagram

KittenBlock Sample Program

Download Sample Program(Right Click->Save As)

Python Sample Program

#/bin/python

from time import sleep
from future import *
from sugar import *
import robotbit

lock_password = 0
curr_password = 0
curr_digit = 0
x = 0
y = 0
authorize = 0
digit = 0


def activate():
  global lock_password,curr_password,curr_digit,x,y,authorize,digit

  if Button("P1").value() == 0:
    sleep(0.2)
    enterPW()



def break_in():
  global lock_password,curr_password,curr_digit,x,y,authorize,digit

  if not Hall("P2").value() == 0:
    while not Hall("P2").value() == 0:
      neopix.setColorAll((255, 0, 0))
      buzzer.melody(NOTICE)
      sleep(2)
    neopix.setColorAll((0,0,0))



def enterPW():
  global lock_password,curr_password,curr_digit,x,y,authorize,digit

  while not (len(curr_password) == len(str(lock_password))):
    screen.fill((0, 0, 0))
    screen.text(str(str(curr_password)+str(curr_digit)),30,55,3,(0, 119, 255))
    screen.refresh()
    curr_digit = (round(valmap(Angle("P0").value(), 0, 4095, 0, 9)))
    if Button("P1").value() == 0:
      curr_password = (str(curr_password)+str(curr_digit))
      digit += 1
      sleep(0.2)
    break_in()
  test()



def init():
  global lock_password,curr_password,curr_digit,x,y,authorize,digit

  robot.geekServo2kg(1, 0)
  neopix.setColorAll((0,0,0))
  screen.clear()
  lock_password = (str(2021))
  curr_password = ""
  authorize = 0
  digit = 1
  screen.textCh("請輸入密碼",20,56,2,(255, 255, 255))
  screen.refresh()



def test():
  global lock_password,curr_password,curr_digit,x,y,authorize,digit

  if curr_password == lock_password:
    screen.fill((0, 255, 0))
    screen.textCh("密碼正確",35,50,2,(255, 255, 255))
    screen.refresh()
    authorize = 1
    buzzer.melody(CORRECT)
    robot.geekServo2kg(1, 90)
    sleep(1)
    while not Button("P1").value() == 0:
      pass
    sleep(1)
  else:
    screen.fill((255, 0, 0))
    screen.textCh("密碼錯誤",35,50,2,(255, 255, 255))
    screen.refresh()
    buzzer.melody(ERROR)
  init()



def valmap(x, in_min, in_max, out_min, out_max):
    return int((x-in_min) * (out_max-out_min) / (in_max-in_min) + out_min)


robot = robotbit.RobotBit()

neopix=NeoPixel("P7",3)

screen.sync = 0

init()

while True:
  activate()
  if not authorize == 1:
    break_in()

Download Sample Program(Right Click->Save As)

Program Instructions

Press the button to begin entering password, select a digit by turning the potentiometer, press the button to confirm. Once 4 digits have been entered, the safe door opens if the password is correct(default: 2021).