In this lesson we learn what interrupt is and using two practial example, code and demonstration we learn how to intrrupt a delay. The seond part of this lesson we learn about Light Dependant Resistor or LDR to measure intensity or light or day and night. We test LDR using a Kaiweets KM601 multimeter, using first code we find the darkness and daylight value using Arduino and then second example we take action to turn ON a buzzer during night or day.
