neotest

Author: ladyada

examples/seesaw_neopixel_test.py

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+# SPDX-FileCopyrightText: 2021 ladyada for Adafruit Industries
+# SPDX-License-Identifier: MIT
+
+# Simple seesaw test writing NeoPixels
+# Can use any valid GPIO pin, up to 60 pixels!
+#
+# See the seesaw Learn Guide for wiring details:
+# https://learn.adafruit.com/adafruit-seesaw-atsamd09-breakout?view=all#circuitpython-wiring-and-test
+
+import time
+import board
+from rainbowio import colorwheel
+from adafruit_seesaw import seesaw, neopixel
+
+i2c_bus = board.I2C()
+ss = seesaw.Seesaw(i2c_bus)
+
+NEOPIXEL_PIN = 6       # change to any pin
+NEOPIXEL_NUM = 30      # no more than 60!
+pixels = neopixel.NeoPixel(ss, NEOPIXEL_PIN, NEOPIXEL_NUM)
+pixels.brightness = 0.3 # not so brite!
+
+color_offset = 0  # start at red
+
+# cycle through all colors along the strip
+while True:
+    for i in range(NEOPIXEL_NUM):
+        rc_index = (i * 256 // NEOPIXEL_NUM) + color_offset
+        pixels[i] = colorwheel(rc_index & 255)
+    pixels.show()
+    color_offset += 1
+    time.sleep(0.01)