adding dreidel code

Author: BlitzCityDIY

Planetary_Gear_Dreidels/code.py

@@ -0,0 +1,40 @@
+# SPDX-FileCopyrightText: Copyright (c) 2025 Liz Clark for Adafruit Industries
+#
+# SPDX-License-Identifier: MIT
+
+"""
+Planetary Gear Dreidel Code - slightly modified from the STSPIN220 example
+"""
+
+import board
+
+import adafruit_stspin
+
+STEPS_PER_REVOLUTION = 200
+
+DIR_PIN = board.D2  # DIRection pin
+STEP_PIN = board.D3  # STEP pin
+MODE1_PIN = board.D4  # Mode 1 pin (REQUIRED for mode switching)
+MODE2_PIN = board.D5  # Mode 2 pin (REQUIRED for mode switching)
+EN_FAULT_PIN = board.D6  # Enable/Fault pin (optional)
+STBY_RESET_PIN = board.D7  # Standby/Reset pin (REQUIRED for mode switching)
+
+print("Initializing STSPIN220...")
+motor = adafruit_stspin.STSPIN(
+    STEP_PIN,
+    DIR_PIN,
+    STEPS_PER_REVOLUTION,
+    mode1_pin=MODE1_PIN,
+    mode2_pin=MODE2_PIN,
+    en_fault_pin=EN_FAULT_PIN,
+    stby_reset_pin=STBY_RESET_PIN,
+)
+
+# Set the speed to 60 RPM
+motor.speed = 60
+motor.step_mode = adafruit_stspin.Modes.STEP_1_128
+
+while True:
+    # continuously step the motor
+    total_microsteps = STEPS_PER_REVOLUTION * motor.microsteps_per_step
+    motor.step(total_microsteps)