This example shows how to use a while loop to calibrate the value of an analog sensor. Arduino Mega2560, IDE 1. I found an alternative solution during the exam but i wanna know why this happened. Sometimes you want everything in the program to stop while a given condition is true. Serial monitor showed that the counter was going down but the code in loop just wouldnt do anything. The program worked perfectly in tinkercad but in the exam whenever you got to 5 the display would just get stuck like that and wouldnt flash to indicate its at max like its supposed to. But i seem to have a problem on the very very. I practiced by making a program and sketch in tinkercad, the tinkercad sketch was identical to the arduino system we got on the exam. Hey, i am trying to make a device that you activate by pressing a button, then it creates a random delay, and you have to wait for this random amount of time, and when it has passed, either a led or a buzzer will go off (also randomly chosen), then you have to click again, and then it will tell you your reaction time based on two millis() timers. There is a 7 segment display connected to a decoder that shows the numbers and the serial monitor also keeps track of the numbers. ![]() delay() in setup() is typically exactly what you want.-jim lee. You dont generally need to be doing more than one thing at a time in setup and it only runs once before loop(). ![]() ![]() So I had an exam where i needed to make a simple program that counts from 0-5 using two buttons that add or subtract. I dont see a problem using delay() or other such mechanisms (e.g.
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