![]() ![]() My professor didn't teach much about the programming language, and I am trying to get an RGB LED light strip to switch cycle through different colors over a set amount of time. We are using the programming language Arduino. In this sketch 18 color effects for WS2812B led strip. I am working on a project for my engineering class in college. I plan on the MP3 player immediately turning on, then using the pushbutton switch to cycle 'modes'. In the end it doesn't make much difference to the code, because the compiler is doing the needed type conversions in the Serial.read and switch statement, but you will see a difference in a Serial.print, where a byte will print as a number, and a char as an ascii character, so having the name implying a different type than it actually is can lead to confusion. I have a switch case in this sketch, and what I want is an auto change effect. I am designing a stereo that has an MP3 player, Bluetooth, Fm Tuner and Aux In. For a char, inChar would be a more suitable name. ![]() case a:, case b:, default:, but it will only run the LED PWM fade through 1 in and out cycle when I hit STOP - p it will run through the cycle twice when i hit START -> o when the arduino starts up automatically the LED will stay off. If you had only declared inByte once, where you did the Serial.read within the if statement, all of your references to inByte outside of the if statement would have been out of scope, because inByte would no longer exist once you leave the section it was defined in.Īs for the other comments you have gotten, if I were going to call the variable inByte, I would have defined it as a byte. I have tried switch case styles of programming, e.g. Can anybody please help me solve this problem ? void loop(). The program reads 0 as LOW and 1 as HIGH. The pin states can be checked by switching to the digital input mode programmatically. ![]() Arduino Forum SOLVED Switch case within Switch case Using Arduino. The menuNamei in the loop increments fine. When I press the btn it drops out of the while loop fine. My problem lies in the fact that when the switch-case is first entered, it doesn't jump to the second case when the button is pressed again and the 'buttonTimesPressed' variable is incremented to the value of two. With Arduino Uno, you can assign any of the pins D0 to D13, originally used for digital output, as digital input. loop back to the start of the switch case again. This must be a simpleton problem: I know there are libraries that might do this, but this seems so simple and I want to understand why the logic doesnt work. I have tried everything and searched everywhere but couldn't find a solution. I am working on a project with LEDs and want to be able to use a push-button as an incrementer to cycle through various LED modes. Ive decided that I would have a previous and a next button that allows me to cycle through a list of menu options. My problem lies in the fact that when the switch-case is first entered, it doesnt jump to the second case when the button is pressed again and the buttonTimesPressed variable is incremented to the value of two. I need the code to keep looping until for example i choose switch case 's' to stop the car. On a final note, the example switch has so few cases that we could simplify that logic even further with a ternary expression. At the moment my idea is to use a switch case construction so that I can switch between three functions I use. I am working on a project with LEDs and want to be able to use a push-button as an incrementer to cycle through various LED modes. Each case gets selected one after one on the even of 'PushButton1' gets pressed for. in between if I press 'PushButton1' for 2 seconds the Arduino must enter into programming mode. The problem is when i use switch case 'a', the code runs once and stops. PROJECT OUTLINE: There are 3 sensors (Temp., Accelerometer & Humidity) will read the respective parameters continuously. So i have made a small autonomous car and what i'm trying to do now is to control it by switch case. ![]()
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