<em> int potPin = 0; \/\/ Analog input pin that the potentiometer is attached to
\n int potValue = 0; \/\/ value read from the pot
\n int cellPin = 1; \/\/ Analog input pin that the potentiometer is attached to
\n int cellValue = 0; \/\/ value read from the pot
\n int led = 9; \/\/ PWM pin that the LED is on. n.b. PWM 0 is on digital pin 9
\n
\n void setup() { \/\/ initialize serial communications at 9600 bps:
\n Serial.begin(9600);
\n }
\n
\n void loop() {
\n cellValue = analogRead(cellPin); \/\/ Read the cell value
\n int outputCellValue = map(cellValue,1,25,1,1000); \/\/ map the cell value
\n Serial.println("Cell Value = "); \/\/ print the cell tag
\n Serial.println(cellValue); \/\/ print the cell value back to the debugger pane
\n Serial.println("Cell output = "); \/\/ print the cell tag
\n Serial.println(outputCellValue); \/\/ print the cell value back to the debugger pane
\n potValue = analogRead(potPin); \/\/ read the pot value
\n
\n if (outputCellValue<320) { \/\/ check for light conditions
\n if (outputCellValue<20) { \/\/ set low limit for behavior in extreme darkness
\n outputCellValue=20;
\n }
\n if (outputCellValue>2000) { \/\/ set high limit for behavior in bright conditions
\n outputCellValue=1950;
\n }
\n int delayVar = outputCellValue;
\n
\n \/\/Serial.println("delayVar = ");
\n \/\/Serial.println(delayVar); \/\/ print the cell value back to the debugger pane
\n
\n analogWrite(led, potValue\/4); \/\/ PWM the LED with the pot value (divided by 4 to fit in a byte)
\n delay(delayVar); \/\/ blink delay
\n analogWrite(led, 0); \/\/ blink off
\n delay(delayVar); \/\/ blink delay
\n \/\/ Serial.println("Dial Value:"); \/\/ print the pot value back to the debugger pane
\n \/\/ Serial.println(potValue); \/\/ print the pot value back to the debugger pane
\n }
\n
\n else \/\/ Simply turn LED according to potentiometer values when in lit conditions
\n {
\n analogWrite(led, potValue\/4);
\n }
\n delay(20); \/\/ wait 10 milliseconds before the next loop
\n }<\/em><\/div><\/td><\/tr><\/tbody><\/table><\/div>\n","protected":false},"excerpt":{"rendered":"
Or what would your LED do if it were sacred of the dark? Building upon the lab example and adding a cell sensor into the mix, plus some simple programming. The trick was in calibrating the values correctly in order to achieve a pleasing effect.<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"ngg_post_thumbnail":0,"footnotes":""},"categories":[5],"tags":[],"class_list":["post-94","post","type-post","status-publish","format-standard","hentry","category-p_comp"],"_links":{"self":[{"href":"https:\/\/www.tamarziv.com\/itp\/wp-json\/wp\/v2\/posts\/94","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.tamarziv.com\/itp\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.tamarziv.com\/itp\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.tamarziv.com\/itp\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.tamarziv.com\/itp\/wp-json\/wp\/v2\/comments?post=94"}],"version-history":[{"count":19,"href":"https:\/\/www.tamarziv.com\/itp\/wp-json\/wp\/v2\/posts\/94\/revisions"}],"predecessor-version":[{"id":322,"href":"https:\/\/www.tamarziv.com\/itp\/wp-json\/wp\/v2\/posts\/94\/revisions\/322"}],"wp:attachment":[{"href":"https:\/\/www.tamarziv.com\/itp\/wp-json\/wp\/v2\/media?parent=94"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.tamarziv.com\/itp\/wp-json\/wp\/v2\/categories?post=94"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.tamarziv.com\/itp\/wp-json\/wp\/v2\/tags?post=94"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}