diff --git a/examples/triple_matrix_active3_simpletest.py b/examples/triple_matrix_active3_simpletest.py
new file mode 100644
index 0000000..383696f
--- /dev/null
+++ b/examples/triple_matrix_active3_simpletest.py
@@ -0,0 +1,46 @@
+#!/usr/bin/python3
+# SPDX-FileCopyrightText: 2025 Tim Cocks for Adafruit Industries
+#
+# SPDX-License-Identifier: MIT
+"""
+Display a simple test pattern of 3 shapes on three 64x64 matrix panels
+using Active3 compatible connections.
+
+Run like this:
+
+$ python triple_matrix_active3_simpletest.py
+
+"""
+
+import numpy as np
+from PIL import Image, ImageDraw
+
+import adafruit_blinka_raspberry_pi5_piomatter as piomatter
+from adafruit_blinka_raspberry_pi5_piomatter.pixelmappers import simple_multilane_mapper
+
+width = 64
+n_lanes = 6
+n_addr_lines = 5
+height = n_lanes << n_addr_lines
+pen_radius = 1
+
+canvas = Image.new('RGB', (width, height), (0, 0, 0))
+draw = ImageDraw.Draw(canvas)
+
+pixelmap = simple_multilane_mapper(width, height, n_addr_lines, n_lanes)
+geometry = piomatter.Geometry(width=width, height=height, n_addr_lines=n_addr_lines, n_planes=10, n_temporal_planes=4, map=pixelmap, n_lanes=n_lanes)
+framebuffer = np.asarray(canvas) + 0  # Make a mutable copy
+matrix = piomatter.PioMatter(colorspace=piomatter.Colorspace.RGB888Packed,
+                             pinout=piomatter.Pinout.Active3BGR,
+                             framebuffer=framebuffer,
+                             geometry=geometry)
+
+
+draw.rectangle((8, 8, width-8, width-8), fill=0x008800)
+draw.circle((32, 64+32), 22, fill=0x880000)
+draw.polygon([(32, 136), (54, 180), (10, 180)], fill=0x000088)
+
+framebuffer[:] = np.asarray(canvas)
+matrix.show()
+
+input("Press enter to exit")