[CODE] basic RGB show

.vscode/arduino.json

@@ -1,6 +1,6 @@
 {
     "board": "arduino:avr:nano",
-    "configuration": "cpu=atmega328",
-    "port": "/dev/cu.usbserial-30",
+    "configuration": "cpu=atmega328old",
+    "port": "/dev/ttyUSB0",
     "sketch": "Neopixel_LIS3DH.ino"
 }

.vscode/c_cpp_properties.json

@@ -14,6 +14,16 @@
             "compilerPath": "/usr/bin/clang",
             "cStandard": "c11",
             "cppStandard": "c++17"
+        },
+        {
+            "name": "Linux",
+            "includePath": [
+                "/home/jannik/.arduino15/packages/arduino/tools/**",
+                "/home/jannik/.arduino15/packages/arduino/hardware/avr/1.6.23/**"
+            ],
+            "forcedInclude": [
+                "/home/jannik/.arduino15/packages/arduino/hardware/avr/1.6.23/cores/arduino/Arduino.h"
+            ]
         }
     ],
     "version": 4

Neopixel_LIS3DH.ino

@@ -5,13 +5,180 @@
  * license: http://www.gnu.org/licenses/gpl-3.0.txt GPLv3 License
  */
 
+#include <Wire.h>
+#include <Adafruit_LIS3DH.h>
+#include <Adafruit_Sensor.h>
+const uint32_t accel_interval = 50;
+
+#include <Adafruit_NeoPixel.h>
+#define PIXEL_PIN 6  // Digital IO pin connected to the NeoPixels.
+#define PIXEL_COUNT 16
+const uint32_t neopx_defaultInt = 100;
+
+// I2C: SCL A4, SDA A5, SDO float or GND: 0x18
+Adafruit_LIS3DH lis              = Adafruit_LIS3DH();
+const int       accel_thldNoiseX = 500;  // below this is no movement
+const int       accel_thldNoiseY = 500;
+const int       accel_thldNoiseZ = 9000;
+const int       accel_thldMaxX   = 5000;  // light effects should scale until this point
+const int       accel_thldMaxY   = 5000;
+const int       accel_thldMaxZ   = 15000;
+
+// Neopixel ring: NEO_RGB or NEO_GRB + NEO_KHZ400 or NEO_KHZ800
+Adafruit_NeoPixel strip         = Adafruit_NeoPixel(PIXEL_COUNT, PIXEL_PIN, NEO_GRB + NEO_KHZ400);
+uint32_t          neopx_loopCnt = 0;
+
+// some global variables
+uint32_t       accel_lastWake = 0;
+uint32_t       neopx_lastWake = 0;
+uint32_t       neopx_interval = 50;
+uint32_t       debug_lastWake = 0;
+const uint32_t debug_interval = 200;
+
+const int accel_rangeX = accel_thldMaxX - accel_thldNoiseX;
+const int accel_rangeY = accel_thldMaxY - accel_thldNoiseY;
+const int accel_rangeZ = accel_thldMaxZ - accel_thldNoiseZ;
+
 void setup() {
+  Serial.begin(115200);
+  Serial.println("Neopixel Animation with LIS3DH Motion Sensor\n");
+
+  if (!lis.begin(0x18)) {  // change this to 0x19 for alternative i2c address
+    Serial.println("Couldnt start");
+    while (1)
+      ;
+  }
+  lis.setRange(LIS3DH_RANGE_4_G);  // 2, 4, 8 or 16 G!
+
+  strip.begin();
+  strip.show();  // Initialize all pixels to 'off'
+
   pinMode(LED_BUILTIN, OUTPUT);
 }
 
 void loop() {
-  digitalWrite(LED_BUILTIN, HIGH);
-  delay(1000);
-  digitalWrite(LED_BUILTIN, LOW);
-  delay(1000);
+  uint32_t currentTime_millis = millis();
+
+  // READ SENSOR
+  if (currentTime_millis - accel_lastWake >= accel_interval) {
+    accel_lastWake = currentTime_millis;
+
+    lis.read();
+
+    int32_t diffX = abs(lis.x) - accel_thldNoiseX;
+    if (diffX > accel_rangeX) {
+      diffX = accel_rangeX;
+    }
+    int32_t diffY = abs(lis.y) - accel_thldNoiseY;
+    if (diffY > accel_rangeY) {
+      diffY = accel_rangeY;
+    }
+    int32_t diffZ = abs(lis.z) - accel_thldNoiseZ;
+    if (diffZ > accel_rangeZ) {
+      diffZ = accel_rangeZ;
+    }
+
+    neopx_interval = neopx_defaultInt;
+    if (diffX > 0) {
+      int32_t fasterInt = neopx_defaultInt - (diffX * (neopx_defaultInt - 5) / accel_rangeX);
+      if (neopx_interval > fasterInt) {
+        neopx_interval = fasterInt;
+      }
+    } else if (diffY > 0) {
+      uint32_t fasterInt = neopx_defaultInt - (diffY * (neopx_defaultInt - 5) / accel_rangeY);
+      if (neopx_interval > fasterInt) {
+        neopx_interval = fasterInt;
+      }
+    } else if (diffZ > 0) {
+      uint32_t fasterInt = neopx_defaultInt - (diffZ * (neopx_defaultInt - 5) / accel_rangeZ);
+      if (neopx_interval > fasterInt) {
+        neopx_interval = fasterInt;
+      }
+    }
+  }
+
+  // DO LIGHTSHOW
+  if (currentTime_millis - neopx_lastWake >= neopx_interval) {
+    neopx_lastWake = currentTime_millis;
+
+    neopx_loopCnt++;
+
+    // rainbow
+    for (uint16_t i = 0; i < strip.numPixels(); i++) {
+      strip.setPixelColor(i, Wheel((i + neopx_loopCnt) & 255));
+    }
+    strip.show();
+  }
+
+  // DEBUG OUTPUT
+  if (currentTime_millis - debug_lastWake >= debug_interval) {
+    debug_lastWake = currentTime_millis;
+
+    Serial.print("X: ");
+    Serial.print(lis.x);
+    Serial.print("  \tY: ");
+    Serial.print(lis.y);
+    Serial.print("  \tZ: ");
+    Serial.print(lis.z);
+
+    Serial.println();
+  }
+}
+
+void rainbow(uint8_t wait) {
+  uint16_t i, j;
+
+  for (j = 0; j < 256; j++) {
+    for (i = 0; i < strip.numPixels(); i++) {
+      strip.setPixelColor(i, Wheel((i + j) & 255));
+    }
+    strip.show();
+    delay(wait);
+  }
+}
+
+// Slightly different, this makes the rainbow equally distributed throughout
+void rainbowCycle(uint8_t wait) {
+  uint16_t i, j;
+
+  for (j = 0; j < 256 * 5; j++) {  // 5 cycles of all colors on wheel
+    for (i = 0; i < strip.numPixels(); i++) {
+      strip.setPixelColor(i, Wheel(((i * 256 / strip.numPixels()) + j) & 255));
+    }
+    strip.show();
+    delay(wait);
+  }
+}
+
+//Theatre-style crawling lights with rainbow effect
+void theaterChaseRainbow(uint8_t wait) {
+  for (int j = 0; j < 256; j++) {  // cycle all 256 colors in the wheel
+    for (int q = 0; q < 3; q++) {
+      for (uint16_t i = 0; i < strip.numPixels(); i = i + 3) {
+        strip.setPixelColor(i + q, Wheel((i + j) % 255));  //turn every third pixel on
+      }
+      strip.show();
+
+      delay(wait);
+
+      for (uint16_t i = 0; i < strip.numPixels(); i = i + 3) {
+        strip.setPixelColor(i + q, 0);  //turn every third pixel off
+      }
+    }
+  }
+}
+
+// Input a value 0 to 255 to get a color value.
+// The colours are a transition r - g - b - back to r.
+uint32_t Wheel(byte WheelPos) {
+  WheelPos = 255 - WheelPos;
+  if (WheelPos < 85) {
+    return strip.Color(255 - WheelPos * 3, 0, WheelPos * 3);
+  }
+  if (WheelPos < 170) {
+    WheelPos -= 85;
+    return strip.Color(0, WheelPos * 3, 255 - WheelPos * 3);
+  }
+  WheelPos -= 170;
+  return strip.Color(WheelPos * 3, 255 - WheelPos * 3, 0);
 }