Working display on the LCD

This commit is contained in:
2025-08-09 16:50:37 -04:00
parent c854531d1c
commit 2bc9a28162
2 changed files with 29 additions and 24 deletions

1
.gitignore vendored Normal file
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@@ -0,0 +1 @@
lcd-env/

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@@ -1,18 +1,27 @@
#!/usr/bin/env python3
"""
Catchphrase
Author: Jerick Oates
Catchphrase with LCD Output (Centered & Clean)
"""
import random
import time
import threading
import sys
from RPLCD.i2c import CharLCD
# ---------- CONFIG ----------
WORDS_FILE = "words.txt" # file with one word per line
TIMER_SECONDS = 30 # how long the timer runs
WORDS_FILE = "words.txt" # file with one word per line
TIMER_SECONDS = 30 # how long the timer runs
I2C_ADDRESS = 0x27 # change if your LCD address is different
I2C_CHIP = 'PCF8574' # common backpack chip
# ---------- LCD ----------
lcd = CharLCD(I2C_CHIP, I2C_ADDRESS)
def lcd_print(text, line=0):
"""Print text centered on given LCD line (0 or 1), padded to clear leftovers."""
lcd.cursor_pos = (line, 0)
lcd.write_string(text.center(16)) # 16 chars wide
# ---------- HELPERS ----------
def load_words(path=WORDS_FILE):
@@ -27,59 +36,50 @@ def load_words(path=WORDS_FILE):
print(f"❌ Error loading words: {e}")
sys.exit(1)
def pick_random(words):
"""Return a random word from the list."""
return random.choice(words)
# ---------- TIMER THREAD ----------
class CountdownTimer(threading.Thread):
"""
Background thread that counts down for TIMER_SECONDS.
When it finishes, it calls an optional callback.
"""
def __init__(self, seconds=TIMER_SECONDS, on_finish=None):
super().__init__()
self.seconds = seconds
self.on_finish = on_finish # function to call when timer ends
self.on_finish = on_finish
self._running = threading.Event()
self._running.set()
def run(self):
for _ in range(self.seconds):
if not self._running.is_set():
break # stopped early by user
break
time.sleep(1)
# Timer finished (or was stopped)
self._running.clear()
if self.on_finish:
self.on_finish() # announce completion
self.on_finish()
def stop(self):
"""Stop the timer before it reaches zero."""
self._running.clear()
@property
def is_running(self):
return self._running.is_set()
# ---------- MAIN LOOP ----------
def main():
words = load_words()
timer_thread = None
print("=== Catchphrase, but Better ===")
print("=== Catchphrase, but Better (LCD) ===")
print("Commands:")
print(" start - begin the 30-second timer and show a word immediately")
print(" next - show another random word while the timer is running")
print(" stop - cancel the timer early")
print(" exit / quit - leave the program")
# Helper that prints when the timer ends
def announce_finish():
print("\n⏰ Time is up! Returning to menu.")
lcd_print("Time is up!", line=0)
print("=== Catchphrase ===")
print("Commands:")
print(" start - begin the 30-second timer and show a word immediately")
@@ -97,6 +97,7 @@ def main():
if timer_thread and timer_thread.is_running:
timer_thread.stop()
timer_thread.join()
lcd_print("Goodbye!", line=0)
print("👋 Goodbye!")
break
@@ -104,25 +105,28 @@ def main():
if timer_thread and timer_thread.is_running:
print("[!] Timer is already running.")
else:
# Start a new timer with the finish callback
timer_thread = CountdownTimer(on_finish=announce_finish)
timer_thread.daemon = True # exit when main thread exits
timer_thread.daemon = True
timer_thread.start()
# Show the first word right away
print(pick_random(words))
word = pick_random(words)
print(word)
lcd_print(word, line=0)
print(f"[+] 30-second timer started. ({TIMER_SECONDS}s)")
elif cmd == "next":
if not (timer_thread and timer_thread.is_running):
print("[!] No active timer - use 'start' first.")
else:
print(pick_random(words))
word = pick_random(words)
print(word)
lcd_print(word, line=0)
elif cmd == "stop":
if timer_thread and timer_thread.is_running:
timer_thread.stop()
timer_thread.join()
lcd_print("Stopped early", line=0)
print("[+] Timer stopped early.")
else:
print("[!] There is no running timer to stop.")