Initial commit of project

README.md

@@ -1,2 +1,34 @@
-# Pi-Py-Clock
-Raspberry Pi 1 LED Matrix Clock
+# Pi Py Clock
+
+## Connecting up Display to RPi1
+
+https://raspi.tv/2013/8-x-8-led-array-driven-by-max7219-on-the-raspberry-pi-via-python
+
+## Python 3
+
+Installing pip:
+
+```commandline
+sudo apt update
+sudo apt install python3-pip
+```
+
+
+## Copying the files
+
+`pip3 install luma.led-matrix==1.6.1`
+
+`sudo apt-get install libopenjp2-7`
+`sudo apt install libtiff5`
+
+## Setting up the Service
+
+https://medium.com/codex/setup-a-python-script-as-a-service-through-systemctl-systemd-f0cc55a42267
+
+Copy `service/clock.service` to `/etc/systemd/system/clock.service`
+
+```commandline
+sudo systemctl daemon-reload
+sudo systemctl enable clock.service
+sudo systemctl start clock.service
+```

clock.py

@@ -0,0 +1,43 @@
+#!/usr/bin/env python
+import time
+from datetime import datetime
+from pathlib import Path
+
+from PIL import ImageFont
+from luma.led_matrix.device import max7219
+from luma.core.interface.serial import spi, noop
+from luma.core.render import canvas
+from luma.core.legacy import text
+from luma.core.legacy.font import proportional, TINY_FONT, LCD_FONT
+
+
+def main():
+    font = proportional(LCD_FONT)
+
+    # Setup for Banggood version of 4 x 8x8 LED Matrix (https://bit.ly/2Gywazb)
+    serial = spi(port=0, device=0, gpio=noop())
+    device = max7219(serial, cascaded=4, block_orientation=-90, blocks_arranged_in_reverse_order=False)
+    device.contrast(1)
+
+    toggle = False  # Toggle the second indicator every second
+    while True:
+        toggle = not toggle
+
+        # Do the following twice a second (so the seconds' indicator blips).
+        # I'd optimize if I had to - but what's the point?
+        # Even my Raspberry PI2 can do this at 4% of a single one of the 4 cores!
+        hours = datetime.now().strftime('%H')
+        minutes = datetime.now().strftime('%M')
+        with canvas(device) as draw:
+            width = 0
+            for letter in hours:
+                width = width + len(font[ord(letter)])
+
+            text(draw, (15 - width, 1), hours, fill="white", font=font)
+            text(draw, (15, 1), ":" if toggle else " ", fill="white", font=proportional(TINY_FONT))
+            text(draw, (17, 1), minutes, fill="white", font=font)
+        time.sleep(0.5)
+
+
+if __name__ == "__main__":
+    main()

service/clock.service

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+[Unit]
+Description=Matrix cLock service
+After=multi-user.target
+
+[Service]
+Type=simple
+Restart=always
+ExecStart=/usr/bin/python3 /root/clock/clock.py
+
+[Install]
+WantedBy=multi-user.target