Add pixel heart code

Light_Activated_Pixel_Heart/Light_Activated_Pixel_Heart.ino

@@ -0,0 +1,33 @@
+#include <Adafruit_NeoPixel.h>
+
+#define NUM_LEDS 8  // This many NeoPixels...
+#define LED_PIN  1  // are connected to this DIGITAL pin #
+#define SENSOR   2  // Light sensor to this DIGITAL pin #
+
+Adafruit_NeoPixel strip(NUM_LEDS, LED_PIN);
+
+void setup() {
+  strip.begin();
+  strip.show();                  // Initialize all pixels to 'off'
+  pinMode(SENSOR, INPUT_PULLUP); // Enable pull-up resistor on sensor pin
+}
+
+void loop() {
+  // The LDR is being used as a digital (binary) sensor, so it must be
+  // COMPLETELY dark to turn it off, your finger is not opaque enough!
+  if(!digitalRead(SENSOR)) {                 // Sensor exposed to light?
+    colorWipe(strip.Color(255, 0, 255), 50); // Animate purple
+  } else {                                   // else sensor is dark
+    colorWipe(strip.Color(0, 0, 0), 50);     // Animate off
+  }
+  delay(2); // Pause 2 ms before repeating
+}
+
+// Fill pixels one after the other with a color
+void colorWipe(uint32_t c, uint8_t wait) {
+  for(uint16_t i=0; i<strip.numPixels(); i++) {
+    strip.setPixelColor(i, c);
+    strip.show();
+    delay(wait);
+  }
+}

Light_Activated_Pixel_Heart/Light_Activated_Pixel_Heart.py

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+import board
+import neopixel
+import digitalio
+import time
+
+numpix    = 8         # Number of NeoPixels
+ledpin    = board.D1  # Digital pin # where NeoPixels are connected
+sensorpin = board.D2  # Digital pin # where light sensor is connected
+strip     = neopixel.NeoPixel(ledpin, numpix, brightness=1.0)
+
+# Enable internal pullup resistor on sensor pin
+pin           = digitalio.DigitalInOut(sensorpin)
+pin.direction = digitalio.Direction.INPUT
+pin.pull      = digitalio.Pull.UP
+
+while True:  # Loop forever...
+
+	# LDR is being used as a digital (binary) sensor.  It must be
+	# completely dark to turn it off, a finger may not be opaque enough!
+	if pin.value: color = (0,0,0)      # Off
+	else:         color = (255,0,255)  # Purple
+
+	for i in range(numpix):   # For each pixel...
+		strip[i] = color  # Set to 'color'
+		strip.write()     # Push data to pixels
+		time.sleep(0.05)  # Pause 50 ms
+
+	time.sleep(0.002);  # Pause 2 ms