which: 0 or 1 to pick the strip

        pixels: (50, 3) array of 0..1 floats

        """

        command = {0: '\x00', 1: '\x01'}[which]

        if pixels.shape != (50, 3):

            raise ValueError("pixels was %s" % pixels.shape)

        self._dev.write('\x60' + command + self._8bitMessage(pixels))

        self._dev.flush()

    def setUv(self, which, level):

        """

        which: 0 or 1

        level: 0 to 1

        """

        command = {0: '\x02', 1: '\x03'}[which]

        self._dev.write('\x60' + command + chr(max(0, min(1, level)) * 255))

        self._dev.flush()

    def setRgb(self, color):

        """

        color: (1, 3) array of 0..1 floats

        """

        if color.shape != (1, 3):

            raise ValueError("color was %s" % color.shape)

        self._dev.flush()

class LedLoop(EffectLoop):

    def initOutput(self):

        self.board = ControlBoard()

        self.lastSent = {} # what's in arduino's memory

    def combineOutputs(self, outputs):

        combined = {'L': Z, 'R': Z,

                    'blacklight0': 0, 'blacklight1': 0,

                    'W': numpy.zeros((1, 3), dtype=numpy.float16)}

        for out in outputs:

            log.debug('combine output %r', out)

            if isinstance(out, Effects.Blacklight):

                key = 'blacklight%s' % out.which

                combined[key] = max(combined[key], out)

            elif isinstance(out, Effects.Strip):

                pixels = numpy.array(out.pixels, dtype=numpy.float16)

                for w in out.which:

                    combined[w] = numpy.maximum(

                        combined[w], pixels[:1,:] if w == 'W' else pixels)

    strip->setPixelColor(0,   red); strip->show(); delay(100);

    strip->setPixelColor(0, black); strip->show(); delay(100);

  }

}

void setStrip(Adafruit_NeoPixel* strip) {

  digitalWrite(debugLed, 1);

  for (uint8_t i=0; i < strip->numPixels(); i++) {

    while (Serial.available() < 3) {

    }

    byte r = Serial.read();

    byte g = Serial.read();

    byte b = Serial.read();

    strip->setPixelColor(i, strip->Color(g, r, b));

  }

  strip->show();

  digitalWrite(debugLed, 0);

}

int main(void) {

  init();

  pinMode(debugLed, OUTPUT);

  strip0.begin();

  strip1.begin();

  intro(); 

  Serial.begin(115200);

  uint8_t i;

  while (1) {

    while (Serial.available() <= 2) {

    }

    i = Serial.read();

    if (i != 0x60) {

      continue;

    }

    i = Serial.read(); // command

    if (i == 0) { // set strip: 0x60 0x00 <numPixels * 3 bytes>

      setStrip(&strip0);

    } else if (i == 1) { // strip 1

      setStrip(&strip1);

    } else if (i == 2) { // set pwm on uv1: 0x60 0x02 <level>

      while (Serial.available() < 1) {

      }

      analogWrite(3, Serial.read());

    } else if (i == 3) { // set pwm on uv2: 0x60 0x03 <level>

      while (Serial.available() < 1) {