Merge branch 'master' into fix-pyportal-mqtt-sensor-node

Author: brentru

Astrophotography_Tracker/code.py

@@ -0,0 +1,27 @@
+import time
+import board
+import digitalio
+
+worm_ratio = 40/1
+belt_ratio = 100/60
+gear_ratio = worm_ratio * belt_ratio
+
+steps = 200 # Steps per revolution
+microsteps = 64 # Microstepping resolution
+total_steps = steps * microsteps # Total microsteps per revolution
+
+wait = 1/ ((gear_ratio * total_steps) / 86400)
+
+step = digitalio.DigitalInOut(board.D6)
+direct = digitalio.DigitalInOut(board.D5)
+
+step.direction = digitalio.Direction.OUTPUT
+direct.direction = digitalio.Direction.OUTPUT
+
+direct.value = True
+
+while True:
+    step.value = True
+    time.sleep(0.001)
+    step.value = False
+    time.sleep(wait - 0.001)

MIDI_Solenoid_Drum_Kit/code.py

@@ -0,0 +1,53 @@
+import time
+import board
+import digitalio
+import usb_midi
+import adafruit_midi
+from adafruit_midi.note_on import NoteOn
+
+#  pins for the solenoid output signals
+noid_pins = [board.D5, board.D6, board.D9, board.D10]
+
+#  array for the solenoids
+noids = []
+
+#  setup for the solenoid pins to be outputs
+for pin in noid_pins:
+    noid = digitalio.DigitalInOut(pin)
+    noid.direction = digitalio.Direction.OUTPUT
+    noids.append(noid)
+
+#  MIDI note array
+notes = [60, 61, 62, 63]
+
+#  MIDI in setup
+midi = adafruit_midi.MIDI(midi_in=usb_midi.ports[0], in_channel=0)
+
+#  delay for solenoids
+speed = 0.03
+retract = 0
+
+while True:
+
+    #  msg holds MIDI messages
+    msg = midi.receive()
+
+    for i in range(4):
+        #  states for solenoid on/off
+        noid_output = noids[i]
+
+        #  states for MIDI note recieved
+        notes_played = notes[i]
+
+        #  if NoteOn msg comes in and the MIDI note # matches with predefined notes:
+        if isinstance(msg, NoteOn) and msg.note is notes_played:
+            print(time.monotonic(), msg.note)
+
+            #  solenoid is triggered
+            noid_output.value = True
+            #  quick delay
+            retract = time.monotonic()
+
+        #  retracts solenoid using time.monotonic() to avoid delays between notes activating
+        if (retract + speed) < time.monotonic():
+            noid_output.value = False

MP3_Tap_Player/mp3_tap_player.py

@@ -1,5 +1,5 @@
 # MP3 playback with tap trigger
-# Works on M4 and nRF52840 based boards with accelerometer or Propmaker
+# Works on Feather M4 (or other M4 based boards) with Propmaker
 import time
 import board
 import busio