From ad0bf2eed1e6c8bf47b1525fa4445c9512bbc0d7 Mon Sep 17 00:00:00 2001
From: tiijay <git@th-jahn.de>
Date: Tue, 21 Oct 2025 17:31:59 +0200
Subject: [PATCH] v.0.2.0 font_5x7_optimized

---
 app/display/fonts/font_5x7_opt.py | 236 ++++++++++++++++++++++++++++++
 app/display/fonts/fonts_utils.py  |   3 +
 app/display/neopixel_64x64.py     |  70 ++++++++-
 app/utils/utils.py                |   5 +
 main.py                           |  66 +++++++--
 5 files changed, 364 insertions(+), 16 deletions(-)
 create mode 100644 app/display/fonts/font_5x7_opt.py

diff --git a/app/display/fonts/font_5x7_opt.py b/app/display/fonts/font_5x7_opt.py
new file mode 100644
index 0000000..786549f
--- /dev/null
+++ b/app/display/fonts/font_5x7_opt.py
@@ -0,0 +1,236 @@
+# fonts.py - Optimized fonts for LED matrix with character width adjustment
+
+# 5x7 Font (Optimized Width)
+font_5x7 = {
+	# Uppercase letters (A-Z) - Optimized for better spacing
+	'A': [0x0E, 0x11, 0x11, 0x1F, 0x11, 0x11, 0x11],  # Width: 5
+	'B': [0x1E, 0x11, 0x11, 0x1E, 0x11, 0x11, 0x1E],  # Width: 5
+	'C': [0x0E, 0x11, 0x10, 0x10, 0x10, 0x11, 0x0E],  # Width: 5
+	'D': [0x1E, 0x11, 0x11, 0x11, 0x11, 0x11, 0x1E],  # Width: 5
+	'E': [0x1F, 0x10, 0x10, 0x1E, 0x10, 0x10, 0x1F],  # Width: 5
+	'F': [0x1F, 0x10, 0x10, 0x1E, 0x10, 0x10, 0x10],  # Width: 5
+	'G': [0x0E, 0x11, 0x10, 0x13, 0x11, 0x11, 0x0F],  # Width: 5
+	'H': [0x11, 0x11, 0x11, 0x1F, 0x11, 0x11, 0x11],  # Width: 5
+	# 'I': [0x0E, 0x04, 0x04, 0x04, 0x04, 0x04, 0x0E],  # Width: 3
+	'I': [0x07, 0x02, 0x02, 0x02, 0x02, 0x02, 0x07],  # Width: 3
+	'J': [0x07, 0x02, 0x02, 0x02, 0x02, 0x12, 0x0C],  # Width: 4
+	'K': [0x11, 0x12, 0x14, 0x18, 0x14, 0x12, 0x11],  # Width: 5
+	'L': [0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x1F],  # Width: 5
+	'M': [0x11, 0x1B, 0x15, 0x15, 0x11, 0x11, 0x11],  # Width: 5
+	'N': [0x11, 0x19, 0x19, 0x15, 0x13, 0x13, 0x11],  # Width: 5
+	'O': [0x0E, 0x11, 0x11, 0x11, 0x11, 0x11, 0x0E],  # Width: 5
+	'P': [0x1E, 0x11, 0x11, 0x1E, 0x10, 0x10, 0x10],  # Width: 5
+	'Q': [0x0E, 0x11, 0x11, 0x11, 0x15, 0x12, 0x0D],  # Width: 5
+	'R': [0x1E, 0x11, 0x11, 0x1E, 0x14, 0x12, 0x11],  # Width: 5
+	'S': [0x0F, 0x10, 0x10, 0x0E, 0x01, 0x01, 0x1E],  # Width: 5
+	'T': [0x1F, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04],  # Width: 5
+	'U': [0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x0E],  # Width: 5
+	'V': [0x11, 0x11, 0x11, 0x11, 0x11, 0x0A, 0x04],  # Width: 5
+	'W': [0x11, 0x11, 0x11, 0x15, 0x15, 0x15, 0x0A],  # Width: 5
+	'X': [0x11, 0x11, 0x0A, 0x04, 0x0A, 0x11, 0x11],  # Width: 5
+	'Y': [0x11, 0x11, 0x0A, 0x04, 0x04, 0x04, 0x04],  # Width: 5
+	'Z': [0x1F, 0x01, 0x02, 0x04, 0x08, 0x10, 0x1F],  # Width: 5
+	# Lowercase letters (a-z) - Optimized for compact display
+	'a': [0x00, 0x00, 0x0E, 0x01, 0x0F, 0x11, 0x0F],  # Width: 4
+	'b': [0x10, 0x10, 0x16, 0x19, 0x11, 0x11, 0x1E],  # Width: 5
+	'c': [0x00, 0x00, 0x0E, 0x11, 0x10, 0x11, 0x0E],  # Width: 4
+	'd': [0x01, 0x01, 0x0D, 0x13, 0x11, 0x11, 0x0F],  # Width: 5
+	'e': [0x00, 0x00, 0x0E, 0x11, 0x1F, 0x10, 0x0E],  # Width: 4
+	'f': [0x06, 0x09, 0x08, 0x1C, 0x08, 0x08, 0x08],  # Width: 4
+	'g': [0x00, 0x0F, 0x11, 0x11, 0x0F, 0x01, 0x0E],  # Width: 5
+	'h': [0x10, 0x10, 0x16, 0x19, 0x11, 0x11, 0x11],  # Width: 5
+	# 'i': [0x00, 0x04, 0x00, 0x0C, 0x04, 0x04, 0x0E],  # Width: 2
+	'i': [0x00, 0x02, 0x00, 0x06, 0x02, 0x02, 0x07],  # Width: 2
+	'j': [0x00, 0x02, 0x00, 0x06, 0x02, 0x12, 0x0C],  # Width: 3
+	'k': [0x10, 0x10, 0x12, 0x14, 0x18, 0x14, 0x12],  # Width: 4
+	# 'l': [0x0C, 0x04, 0x04, 0x04, 0x04, 0x04, 0x0E],  # Width: 3
+	'l': [0x06, 0x02, 0x02, 0x02, 0x02, 0x02, 0x07],  # Width: 3
+	'm': [0x00, 0x00, 0x1A, 0x15, 0x15, 0x15, 0x15],  # Width: 5
+	'n': [0x00, 0x00, 0x16, 0x19, 0x11, 0x11, 0x11],  # Width: 5
+	'o': [0x00, 0x00, 0x0E, 0x11, 0x11, 0x11, 0x0E],  # Width: 4
+	'p': [0x00, 0x00, 0x1E, 0x11, 0x1E, 0x10, 0x10],  # Width: 5
+	'q': [0x00, 0x00, 0x0D, 0x13, 0x0F, 0x01, 0x01],  # Width: 5
+	'r': [0x00, 0x00, 0x16, 0x19, 0x10, 0x10, 0x10],  # Width: 5
+	's': [0x00, 0x00, 0x0E, 0x10, 0x0E, 0x01, 0x1E],  # Width: 4
+	't': [0x08, 0x08, 0x1C, 0x08, 0x08, 0x09, 0x06],  # Width: 4
+	'u': [0x00, 0x00, 0x11, 0x11, 0x11, 0x13, 0x0D],  # Width: 5
+	'v': [0x00, 0x00, 0x11, 0x11, 0x11, 0x0A, 0x04],  # Width: 5
+	'w': [0x00, 0x00, 0x11, 0x11, 0x15, 0x15, 0x0A],  # Width: 5
+	'x': [0x00, 0x00, 0x11, 0x0A, 0x04, 0x0A, 0x11],  # Width: 5
+	'y': [0x00, 0x00, 0x11, 0x11, 0x0F, 0x01, 0x0E],  # Width: 5
+	'z': [0x00, 0x00, 0x1F, 0x02, 0x04, 0x08, 0x1F],  # Width: 5
+	# Numbers (0-9) - Optimized for consistent width
+	'0': [0x0E, 0x11, 0x13, 0x15, 0x19, 0x11, 0x0E],  # Width: 5
+	# '1': [0x04, 0x0C, 0x04, 0x04, 0x04, 0x04, 0x0E],  # Width: 3
+	'1': [0x02, 0x06, 0x02, 0x02, 0x02, 0x02, 0x07],  # Width: 3
+	'2': [0x0E, 0x11, 0x01, 0x02, 0x04, 0x08, 0x1F],  # Width: 5
+	'3': [0x1F, 0x02, 0x04, 0x02, 0x01, 0x11, 0x0E],  # Width: 5
+	'4': [0x02, 0x06, 0x0A, 0x12, 0x1F, 0x02, 0x02],  # Width: 5
+	'5': [0x1F, 0x10, 0x1E, 0x01, 0x01, 0x11, 0x0E],  # Width: 5
+	'6': [0x06, 0x08, 0x10, 0x1E, 0x11, 0x11, 0x0E],  # Width: 5
+	'7': [0x1F, 0x01, 0x02, 0x04, 0x08, 0x08, 0x08],  # Width: 5
+	'8': [0x0E, 0x11, 0x11, 0x0E, 0x11, 0x11, 0x0E],  # Width: 5
+	'9': [0x0E, 0x11, 0x11, 0x0F, 0x01, 0x02, 0x0C],  # Width: 5
+	# Punctuation and symbols - Optimized widths
+	' ': [0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00],  # Width: 2
+	# '!': [0x04, 0x04, 0x04, 0x04, 0x00, 0x00, 0x04],  # Width: 1
+	'!': [0x01, 0x01, 0x01, 0x01, 0x01, 0x00, 0x01],  # Width: 1
+	'?': [0x0E, 0x11, 0x02, 0x04, 0x04, 0x00, 0x04],  # Width: 5
+	'.': [0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01],  # Width: 1
+	',': [0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x02],  # Width: 1
+	':': [0x00, 0x00, 0x01, 0x00, 0x00, 0x01, 0x00],  # Width: 1
+	';': [0x00, 0x00, 0x01, 0x00, 0x00, 0x01, 0x02],  # Width: 1
+	"'": [0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00],  # Width: 1
+	'"': [0x05, 0x05, 0x00, 0x00, 0x00, 0x00, 0x00],  # Width: 3
+	'-': [0x00, 0x00, 0x00, 0x1F, 0x00, 0x00, 0x00],  # Width: 5
+	'_': [0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x1F],  # Width: 5
+	'+': [0x00, 0x04, 0x04, 0x1F, 0x04, 0x04, 0x00],  # Width: 5
+	'=': [0x00, 0x00, 0x1F, 0x00, 0x1F, 0x00, 0x00],  # Width: 5
+	'*': [0x00, 0x0A, 0x04, 0x1F, 0x04, 0x0A, 0x00],  # Width: 5
+	'/': [0x00, 0x01, 0x02, 0x04, 0x08, 0x10, 0x00],  # Width: 5
+	'\\': [0x00, 0x10, 0x08, 0x04, 0x02, 0x01, 0x00],  # Width: 5
+	'(': [0x01, 0x02, 0x04, 0x04, 0x04, 0x02, 0x01],  # Width: 3
+	')': [0x04, 0x02, 0x01, 0x01, 0x01, 0x02, 0x04],  # Width: 3
+	'[': [0x07, 0x04, 0x04, 0x04, 0x04, 0x04, 0x07],  # Width: 3
+	']': [0x07, 0x01, 0x01, 0x01, 0x01, 0x01, 0x07],  # Width: 3
+	'{': [0x03, 0x02, 0x02, 0x04, 0x02, 0x02, 0x03],  # Width: 3
+	'}': [0x06, 0x02, 0x02, 0x01, 0x02, 0x02, 0x06],  # Width: 3
+	'<': [0x00, 0x01, 0x02, 0x04, 0x02, 0x01, 0x00],  # Width: 4
+	'>': [0x00, 0x04, 0x02, 0x01, 0x02, 0x04, 0x00],  # Width: 4
+	'@': [0x0E, 0x11, 0x17, 0x15, 0x17, 0x10, 0x0E],  # Width: 5
+	'#': [0x0A, 0x0A, 0x1F, 0x0A, 0x1F, 0x0A, 0x0A],  # Width: 5
+	'$': [0x04, 0x0F, 0x14, 0x0E, 0x05, 0x1E, 0x04],  # Width: 5
+	'%': [0x18, 0x19, 0x02, 0x04, 0x08, 0x13, 0x03],  # Width: 5
+	'&': [0x0C, 0x12, 0x14, 0x08, 0x15, 0x12, 0x0D],  # Width: 5
+	'^': [0x04, 0x0A, 0x11, 0x00, 0x00, 0x00, 0x00],  # Width: 5
+	'~': [0x00, 0x00, 0x00, 0x0D, 0x12, 0x00, 0x00],  # Width: 5
+	# Special characters
+	'°': [0x07, 0x05, 0x07, 0x00, 0x00, 0x00, 0x00],  # Width: 3 (Degree symbol)
+	'|': [0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01],  # Width: 1 (Vertical bar)
+	'`': [0x02, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00],  # Width: 2 (Backtick)
+	'¶': [0x0F, 0x0D, 0x0D, 0x0D, 0x0D, 0x0D, 0x0D],  # Width: 5 (Paragraph symbol)
+	'•': [0x00, 0x00, 0x02, 0x07, 0x02, 0x00, 0x00],  # Width: 3 (Bullet point)
+}
+
+# Character width mapping for optimized spacing
+char_width = {
+	# Wide characters (5 pixels)
+	'A': 5,
+	'B': 5,
+	'C': 5,
+	'D': 5,
+	'E': 5,
+	'F': 5,
+	'G': 5,
+	'H': 5,
+	'K': 5,
+	'L': 5,
+	'M': 5,
+	'N': 5,
+	'O': 5,
+	'P': 5,
+	'Q': 5,
+	'R': 5,
+	'S': 5,
+	'T': 5,
+	'U': 5,
+	'V': 5,
+	'W': 5,
+	'X': 5,
+	'Y': 5,
+	'Z': 5,
+	'b': 5,
+	'd': 5,
+	'g': 5,
+	'h': 5,
+	'm': 5,
+	'n': 5,
+	'p': 5,
+	'q': 5,
+	'u': 5,
+	'v': 5,
+	'w': 5,
+	'x': 5,
+	'y': 5,
+	'z': 5,
+	'0': 5,
+	'2': 5,
+	'3': 5,
+	'4': 5,
+	'5': 5,
+	'6': 5,
+	'7': 5,
+	'8': 5,
+	'9': 5,
+	'?': 5,
+	'-': 5,
+	'_': 5,
+	'+': 5,
+	'=': 5,
+	'*': 5,
+	'/': 5,
+	'\\': 5,
+	'@': 5,
+	'#': 5,
+	'$': 5,
+	'%': 5,
+	'&': 5,
+	'^': 5,
+	'~': 5,
+	'¶': 4,
+	# Medium characters (4 pixels)
+	'J': 5,
+	'a': 5,
+	'c': 5,
+	'e': 5,
+	'f': 5,
+	'k': 5,
+	'o': 5,
+	's': 5,
+	't': 5,
+	'<': 4,
+	'>': 4,
+	# Narrow characters (3 pixels)
+	'I': 3,
+	'1': 3,
+	'l': 3,
+	'j': 4,
+	'(': 3,
+	')': 3,
+	'[': 3,
+	']': 3,
+	'{': 3,
+	'}': 3,
+	'°': 3,
+	'•': 3,
+	# Very narrow characters (2 pixels)
+	'i': 3,
+	' ': 1,
+	'`': 2,
+	# Single pixel characters
+	'!': 1,
+	'.': 1,
+	',': 2,
+	':': 1,
+	';': 2,
+	"'": 1,
+	'|': 1,
+	# Special cases
+	'"': 3,
+}
+
+
+def get_char_width(char):
+	"""Get the display width of a character for proper spacing"""
+	return char_width.get(char, 5)  # Default to 5 if character not found
+
+
+def get_text_width(text):
+	"""Calculate total width of text including character spacing"""
+	width = 0
+	for char in text:
+		if char in char_width:
+			width += char_width[char] + 1  # +1 for spacing between characters
+		else:
+			width += 6  # Default width + spacing
+	return max(0, width - 1)  # Remove last spacing
diff --git a/app/display/fonts/fonts_utils.py b/app/display/fonts/fonts_utils.py
index 78fabfa..297e891 100644
--- a/app/display/fonts/fonts_utils.py
+++ b/app/display/fonts/fonts_utils.py
@@ -1,5 +1,6 @@
 from .font_3x5 import font_3x5
 from .font_5x7 import font_5x7
+from .font_5x7_opt import font_5x7 as font_5x7_opt
 from .font_8x8 import font_8x8
 from .font_16x16 import font_16x16
 from ..emoji.emoji_5x7 import emoji_5x7
@@ -19,6 +20,8 @@ def fonts_meta(font):
 		return fonts_meta_[3]
 	elif font == font_5x7:
 		return fonts_meta_[5]
+	elif font == font_5x7_opt:
+		return fonts_meta_[5]
 	elif font == font_8x8:
 		return fonts_meta_[8]
 	elif font == font_16x16:
diff --git a/app/display/neopixel_64x64.py b/app/display/neopixel_64x64.py
index 45e6108..af7a37e 100644
--- a/app/display/neopixel_64x64.py
+++ b/app/display/neopixel_64x64.py
@@ -1,13 +1,16 @@
 from machine import Pin, RTC
 from neopixel import NeoPixel
 from .fonts.fonts_utils import fonts_meta
+
 from .fonts.font_5x7 import font_5x7
-from ..utils.colors import RAINBOW, BLACK
+from .fonts.font_5x7_opt import font_5x7 as font_5x7_opt, get_char_width
+from ..utils.colors import GRAY, RAINBOW, BLACK, WHITE, LIME
 from ..utils.utils import (
 	get_german_timestamp_short,
 	get_datetime_string,
 	get_german_time_ticks,
 	get_german_date_ticks,
+	number_to_bitarray_msb,
 )
 import time
 import math
@@ -29,7 +32,7 @@ class NeoPixel_64x64(NeoPixel):
 		super().__init__(Pin(pin), self.MATRIX_WIDTH * self.MATRIX_HEIGHT)
 
 		# Font configuration
-		self.set_font(font_5x7)
+		self.set_font(font_5x7_opt)
 
 	def set_font(self, font):
 		"""
@@ -89,7 +92,7 @@ class NeoPixel_64x64(NeoPixel):
 
 		self.write()
 
-	def draw_letter(self, letter, x, y, color):
+	def draw_letter___obsolet(self, letter, x, y, color):
 		"""
 		Draw a single letter using current font
 
@@ -110,7 +113,42 @@ class NeoPixel_64x64(NeoPixel):
 		else:
 			print(f'oops, letter does not exist in the font -> {letter}')
 
-	def draw_text(self, text, x, y, color=RAINBOW[2], spacing=1):
+	def draw_letter(self, letter, x, y, color):
+		"""
+		Draw a single letter using current font with optimized width
+
+		Args:
+				letter: Character to draw
+				x: X position
+				y: Y position
+				color: RGB color tuple
+		"""
+
+		# background for the letter (full font size)
+		[
+			# print(xpos, ypos)
+			self.set_pixel(xpos, ypos, GRAY)
+			for xpos in range(x, x + 8)  # 8 because full with of character representation
+			for ypos in range(y, y + self.font_height)
+		]
+
+		if letter in self.selected_font:
+			char_data = self.selected_font[letter]
+			char_width = get_char_width(letter)
+
+			print(letter)
+			for row in range(self.font_height):
+				row_data = char_data[row]
+				print(number_to_bitarray_msb(row_data))
+				for col in range(char_width):
+					# Check if pixel should be lit (MSB first)
+					# Only check bits within the actual character width
+					if row_data & (1 << ((char_width - 1) - col)):
+						self.set_pixel(x + col, y + row, color)
+		else:
+			print(f'oops, letter does not exist in the font -> {letter}')
+
+	def draw_text___obsolete(self, text, x, y, color=RAINBOW[2], spacing=1):
 		"""
 		Draw text string at specified position
 
@@ -125,6 +163,23 @@ class NeoPixel_64x64(NeoPixel):
 			char_x = x + (idx * (self.font_width + spacing))
 			self.draw_letter(char, char_x, y, color)
 
+	def draw_text(self, text, x, y, color):
+		"""
+		Draw text with optimized character spacing
+
+		Args:
+				text: Text to draw
+				x: Starting X position
+				y: Starting Y position
+				color: RGB color tuple
+		"""
+		current_x = x
+		for char in text:
+			self.draw_letter(char, current_x, y, color)
+			# Move cursor by character width + 1 pixel spacing
+			char_width = get_char_width(char)
+			current_x += char_width + 1
+
 	def show_hello(self):
 		"""Display HELLO with timestamp"""
 		self.clear()
@@ -296,6 +351,13 @@ class NeoPixel_64x64(NeoPixel):
 				err += dx
 				y1 += sy
 
+	def write_text(self, text: str, xpos: int, line_no: int, color=WHITE) -> None:
+		"""Textausgabe in Zeile line_no"""
+		self.draw_text(
+			text, xpos * (self.font_width + 1), line_no * (self.font_height + 1), color
+		)  # Pixel setzen
+		self.write()  # und anzeigen
+
 
 # Example usage
 if __name__ == '__main__':
diff --git a/app/utils/utils.py b/app/utils/utils.py
index a23ad83..3194236 100644
--- a/app/utils/utils.py
+++ b/app/utils/utils.py
@@ -1,6 +1,11 @@
 import time
 
 
+def number_to_bitarray_msb(number):
+	"""Convert 8-bit number to bit array (MSB first)"""
+	return [(number >> i) & 1 for i in range(7, -1, -1)]
+
+
 def get_datetime_string(format='full'):
 	"""
 	Return date/time as string with different formats
diff --git a/main.py b/main.py
index 7495336..f3455d5 100644
--- a/main.py
+++ b/main.py
@@ -1,7 +1,9 @@
 # from machine import Pin, ADC  # type: ignore
+from app.display.fonts.font_5x7_opt import font_5x7
 from app.display.neopixel_64x64 import NeoPixel_64x64
-from app.utils.colors import GREEN, ORANGE, RAINBOW, RED, YELLOW, GOLD
+from app.utils.colors import BLUE, GREEN, ORANGE, RAINBOW, RED, WHITE, YELLOW, GOLD
 from app.utils.system_load import show_system_load
+import app.utils.utils as utils
 
 from app.web.wlan import Wlan
 
@@ -9,13 +11,11 @@ from app.display.emoji.emoji_8x8 import emoji_8x8
 from app.display.emoji.emoji_16x16 import emoji_16x16
 from app.display.fonts.font_8x8 import font_8x8
 from app.display.fonts.font_16x16 import font_16x16
-# time.sleep(0.1)  # Wait for USB to become ready
 
-print('Hello, Pi Pico!')
+display = NeoPixel_64x64()
 
 
 def emoji_test():
-	display = NeoPixel_64x64()
 	display.clear()
 	# display.set_font(font_8x8)
 	# display.show_hello()
@@ -64,22 +64,64 @@ def weather_check():
 
 		display.clear()
 
-		display.draw_text(f'{str(w_resp.location.name)}', 0, 0, color=RAINBOW[0])
-		display.draw_text(f'{str(w_resp.current.temp_c)}°C', 0, 8, color=RAINBOW[1])
-		display.draw_text(f'upd: {str(w_resp.current.last_updated)[-5:]}', 0, 16, color=RAINBOW[2])
-		display.draw_text(f'cur: {str(w_resp.location.localtime)[-5:]}', 0, 24, color=RAINBOW[3])
+		# display.draw_text(f'{str(w_resp.location.name)}', 0, 0, color=RAINBOW[0])
+		# display.draw_text(f'{str(w_resp.current.temp_c)}°C', 0, 8, color=RAINBOW[1])
+		# display.draw_text(f'upd: {str(w_resp.current.last_updated)[-5:]}', 0, 16, color=RAINBOW[2])
+		# display.draw_text(f'cur: {str(w_resp.location.localtime)[-5:]}', 0, 24, color=RAINBOW[3])
+		# display.write()
 
-		display.write()
+		display.write_text(f'{str(w_resp.location.name)}', 0, 0, color=RAINBOW[0])
+		display.write_text(f'{str(w_resp.current.temp_c)}°C', 0, 1, color=RAINBOW[1])
+		display.write_text(f'upd: {str(w_resp.current.last_updated)[-5:]}', 0, 2, color=RAINBOW[2])
+		display.write_text(f'cur: {str(w_resp.location.localtime)[-5:]}', 0, 3, color=RAINBOW[3])
 
-		# display.clear_row(2)
+		display.write_text('ready', 5, 7, color=WHITE)
 
-		print(w_resp)
 	except OSError as e:
 		print(f'Error: connection closed - {e}')
 	finally:
 		print('finally done.')
 
 
+def font_5x7_test() -> None:
+	alphabet: str = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'
+	char_line_1 = alphabet[:11]
+	char_line_2 = alphabet[11:22]
+	char_line_3 = alphabet[21:]
+	num_line = '0123456789'
+
+	display.write_text(num_line, 0, 0)
+	display.write_text(char_line_1.lower(), 0, 1, YELLOW)
+	display.write_text(char_line_2.lower(), 0, 2, YELLOW)
+	display.write_text(char_line_3.lower(), 0, 3, YELLOW)
+	display.write_text(' !?.,:;\'"-_+=*/\\()', 0, 4, ORANGE)
+
+
+def bit_arrays():
+	# def number_to_bitarray_msb(number):
+	# 	"""Convert 8-bit number to bit array (MSB first)"""
+	# 	return [(number >> i) & 1 for i in range(7, -1, -1)]
+
+	# c = 'A'
+	# print(c)
+	# [print(utils.number_to_bitarray_msb(num)) for num in font_5x7[c]]
+	char_row = '¶•'
+	[display.write_text(c, 0, idx, YELLOW) for idx, c in enumerate(char_row)]
+
+	display.write_text(char_row, 0, len(char_row), ORANGE)
+	display.write_text('Kiel', 0, 7, BLUE)
+
+
+# c = 'I'
+# print(c)
+# [print(number_to_bitarray_msb(num)) for num in font_5x7[c]]
+# c = 'J'
+# print(c)
+# [print(number_to_bitarray_msb(num)) for num in font_5x7[c]]
+
+
 if __name__ == '__main__':
 	# emoji_test()
-	weather_check()
+	# weather_check()
+	# font_5x7_test()
+	bit_arrays()