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turns out linearization isn't necessary IRL

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shark 2018-11-20 00:00:47 +00:00
parent e35fa13802
commit 3608d32d1c
1 changed files with 16 additions and 17 deletions
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15
acrylic-art-code/acrylic-art-code.ino
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@ -13,32 +13,31 @@ void loop() {
int ss = 20; // sample size for light sensor
int average = 0;
for (int x = 0; x < ss; x++) {
//average += 256-log(256-analogRead(0) / 4) * (256 /5.55); // old linearization
// linearization using resistance to lux relationship
average += map(1250000.0 * pow(1023-analogRead(0), -1.4059), 73, 339, 0, 128);
// mapping to correct values
average += map(analogRead(0), 0, 1023, 0, 127);
delay(3);
}
average /= ss;
//Serial.println(analogRead(0));
//Serial.println(average);
if (oldavg == 0) {
oldavg = average;
}
if (oldavg != average) {
if (abs(oldavg - average) > 1) {
Serial.print("Goal: ");
Serial.println(average);
digitalWrite(13, HIGH);
}
while (oldavg < average) {
oldavg += 1;
oldavg += 2;
setColor(oldavg);
}
while (oldavg > average) {
oldavg -= 1;
oldavg -= 2;
setColor(oldavg);
}
digitalWrite(13, LOW);
}
}
void setColor(int hue) {
CRGB color = CHSV(hue, 255, 255);