Displaying Digits of Pi on Raspberry Pi in Python

(Sorry for the long haitus of posts, I've been dealing with some health issues that appear to be going away finally.)

NOW.....

One of the most ePIc Pi-days is here today!  3-14-15!!!   What better way to celebrate this Pi-Day than to program your Raspberry Pi in Python to display digits of Pi.

We are going to accomplish this through 4 LEDs which together will display the binary representation of the decimal digits of Pi.

Here is the key for the 4 LEDs to display digits:  (1 for on, 0 for off)

(led 1, led 2, led 3, led 4)

0 = (0, 0, 0, 0)

1 = (1, 0, 0, 0)

2 = (0, 1, 0, 0)

3 = (1, 1, 0, 0)

4 = (0, 0, 1, 0)

5 = (1, 0, 1, 0)

6 = (0, 1, 1, 0)

7 = (1, 1, 1, 0)

8 = (0, 0, 0, 1)

9 = (1, 0, 0, 1)

We want to display in order 3 then 1 then 4 then 1 then 5 ....

Here is the photo of the completed project:

Here is the wiring set up:

Here is the python code:


# Script to display the digits of pi in binary on leds
import os
import time
import RPi.GPIO as GPIO
GPIO.setmode(GPIO.BOARD)
GPIO.setwarnings(False)
GPIO.setup(7,GPIO.OUT)
GPIO.setup(11,GPIO.OUT)
GPIO.setup(13,GPIO.OUT)
GPIO.setup(15,GPIO.OUT)
number_seq = 31415926535897932384
number_list = list(str(number_seq))
for n in number_list:
if n == '0':
time.sleep(1)
if n == '1':
GPIO.output(7, GPIO.HIGH)
time.sleep(1)
GPIO.output(7, GPIO.LOW)
if n == '2':
GPIO.output(11, GPIO.HIGH)
time.sleep(1)
GPIO.output(11, GPIO.LOW)
if n == '3':
GPIO.output(7, GPIO.HIGH)
GPIO.output(11, GPIO.HIGH)
time.sleep(1)
GPIO.output(7, GPIO.LOW)
GPIO.output(11, GPIO.LOW)
if n == '4':
GPIO.output(13, GPIO.HIGH)
time.sleep(1)
GPIO.output(13, GPIO.LOW)
if n == '5':
GPIO.output(7, GPIO.HIGH)
GPIO.output(13, GPIO.HIGH)
time.sleep(1)
GPIO.output(7, GPIO.LOW)
GPIO.output(13, GPIO.LOW)
if n == '6':
GPIO.output(11, GPIO.HIGH)
GPIO.output(13, GPIO.HIGH)
time.sleep(1)
GPIO.output(11, GPIO.LOW)
GPIO.output(13, GPIO.LOW)
if n == '7':
GPIO.output(7, GPIO.HIGH)
GPIO.output(11, GPIO.HIGH)
GPIO.output(13, GPIO.HIGH)
time.sleep(1)
GPIO.output(7, GPIO.LOW)
GPIO.output(11, GPIO.LOW)
GPIO.output(13, GPIO.LOW)
if n == '8':
GPIO.output(15, GPIO.HIGH)
time.sleep(1)
GPIO.output(15, GPIO.LOW)
if n == '9':
GPIO.output(7, GPIO.HIGH)
GPIO.output(15, GPIO.HIGH)
time.sleep(1)
GPIO.output(7, GPIO.LOW)
GPIO.output(15, GPIO.LOW)
GPIO.cleanup()


Yay!!!!

HAPPY PI DAY!!!