Raspberry Pi "Stranger Things" Twitter sign

#!/usr/bin/python
from TwitterSearch import *
import re
import serial
from time import sleep
#from credentials import *

regex = re.compile('[^a-zA-Z]')
sft = re.compile('#makewithdigikey')
myPort = serial.Serial('/dev/ttyACM0', 115200, timeout = 10)
myPort.write("Hello world!")

tweet_id_list = []

while True:
	try:
		print ("Searching...")
		tso = TwitterSearchOrder() # create a TwitterSearchOrder object
		tso.set_keywords(['#makewithdigikey']) # let's define all words we would like to have a look for
		tso.set_include_entities(False) # and don't give us all those entity information

	    # it's about time to create a TwitterSearch object with our secret tokens
		ts = TwitterSearch(
			consumer_key = 'your_key_here',
			consumer_secret = 'your_secret_here',
			access_token = 'your_token_here,
			access_token_secret = 'your_token_secret_here'
		     )

	     # this is where the fun actually starts :)
		for tweet in ts.search_tweets_iterable(tso):
			if tweet['id'] not in tweet_id_list:
				no_hashtag = sft.sub('',  tweet['text'])
				text_only = regex.sub('', no_hashtag).encode('ascii', 'ignore')
				tweet_id_list.append(tweet['id'])
				for character in text_only:
					print (character)
					myPort.write(character)
					sleep(1.0)

	except TwitterSearchException as e: # take care of all those ugly errors if there are some
	    print(e)

	sleep(60)

myPort.close()

#include <Adafruit_NeoPixel.h>
#include <avr/power.h>

#define PIN            6

#define NUMPIXELS      76

enum CHAR_LEDS {
  LR = 1, LS = 3, LT = 6, LU = 9, LV = 12, LW = 15, LX = 18, LY = 21, LZ = 24, LQ = 25,
  LP = 28, LO = 31, LN = 34, LM = 37, LL = 40, LK = 43, LJ = 46, LI = 49, LA = 50, LB = 53, LC = 56,
  LD = 59, LE = 62, LF = 65, LG = 68, LH = 71
};

Adafruit_NeoPixel pixels = Adafruit_NeoPixel(76, PIN, NEO_GRB + NEO_KHZ800);

int delayVal = 500; // delay for half a second

void setup() 
{
  Serial.begin(115200);
  pixels.begin(); 
}

void loop()
{
  if (Serial.available() > 0)
  {
    char inchar = Serial.read();
    switch(inchar)
    {
      case 'a':
      case 'A':
        lightUp(LA);
        break;
        
      case 'b':
      case 'B':
        lightUp(LB);
        break;
      case 'c':
      case 'C':
        lightUp(LC);
        break;
      case 'd':
      case 'D':
        lightUp(LD);
        break;
      case 'e':
      case 'E':
        lightUp(LE);
        break;
      case 'f':
      case 'F':
        lightUp(LF);
        break;
      case 'g':
      case 'G':
        lightUp(LG);
        break;
      case 'h':
      case 'H':
        lightUp(LH);
        break;
      case 'i':
      case 'I':
        lightUp(LI);
        break;
      case 'j':
      case 'J':
        lightUp(LJ);
        break;
      case 'k':
      case 'K':
        lightUp(LK);
        break;
      case 'l':
      case 'L':
        lightUp(LL);
        break;
      case 'm':
      case 'M':
        lightUp(LM);
        break;
      case 'n':
      case 'N':
        lightUp(LN);
        break;
      case 'o':
      case 'O':
        lightUp(LO);
        break;
      case 'p':
      case 'P':
        lightUp(LP);
        break;
      case 'q':
      case 'Q':
        lightUp(LQ);
        break;
      case 'r':
      case 'R':
        lightUp(LR);
        break;
      case 's':
      case 'S':
        lightUp(LS);
        break;
      case 't':
      case 'T':
        lightUp(LT);
        break;
      case 'u':
      case 'U':
        lightUp(LU);
        break;
      case 'v':
      case 'V':
        lightUp(LV);
        break;
      case 'w':
      case 'W':
        lightUp(LW);
        break;
      case 'x':
      case 'X':
        lightUp(LX);
        break;
      case 'y':
      case 'Y':
        lightUp(LY);
        break;
      case 'z':
      case 'Z':
        lightUp(LZ);
        break;
      default:
        break;
    }
  }
}

void lightUp(CHAR_LEDS charIndex)
{
  pixels.setPixelColor(charIndex, pixels.Color(255,255,255));
  pixels.show();
  delay(delayVal);
  pixels.setPixelColor(charIndex, pixels.Color(0,0,0));
  pixels.show();
}