dvl · March 25, 2017 04:28 · Mar 25, 2017
diff --git a/timelapse.py b/timelapse.py
@@ -0,0 +1,48 @@
+import datetime
+import io
+import time
+
+import picamera
+
+from PIL import Image, ImageStat, ImageFont, ImageDraw
+
+
+with picamera.PiCamera() as camera:
+    camera.resolution = (1024, 768)
+    camera.rotation = 180
+
+    stream = io.BytesIO()
+
+    time.sleep(2)  # camera warm-up time
+
+    for _ in camera.capture_continuous(stream, format='png'):
+        stream.truncate()
+        stream.seek(0)
+
+        image = Image.open(stream)
+        stat = ImageStat.Stat(image)
+
+        r, g, b, _ = stat.mean
+
+        if r < 50 and g < 50 and b < 50:
+            print('[!] Lights must be powered off, sleeping...')       
+
+            time.sleep(60 * 5)
+        else:
+            now = datetime.datetime.now()
+            filename = 'images/img_{timestamp:%Y%m%d%H%M%S}.png'.format(timestamp=now)
+
+            annotate_text = now.strftime('%H:%M:%S @ %d/%m/%Y')
+
+            draw = ImageDraw.Draw(image)
+            font = ImageFont.truetype('/usr/share/fonts/truetype/roboto/Roboto-Regular.ttf', 24)
+
+            draw.text((10, 720), annotate_text, (255, 255, 0), font=font)
+
+            image.save(filename)
+
+            print('[!] Taken: {}'.format(filename))
+
+            time.sleep(60 / 2)
+
+        image.close()