I just started using the Arduino IDE a day or two ago, I understand quite a lot already since I have some small experience with other programming languages. I was doing a small project where I have a potentiometer, three LED's (green, yellow and red) and a buzzer connected to my UNO. The idea was to…

You use randomSeed() to seed the random number generator with a different value; that will give a different start value for the random() function.

Does it? Maybe you should post the new version.

Welcome to the forum. The most common way is to use one or more analog inputs, regardless if something is connected or not. That is good enough for toys and games. If you want to choose between 3 options, then you can do "random(3);" for 0, 1 or 2. The tone() function is often used for a buzzer. …

[image] jfjlaros: EEPROM.put(address, seed + 1); +1 has some undesirable properties with the Park-Miller generator.

[image] Koepel: Every "expert" about random tells something different. That's because the one person who actually analyzed using analogRead for creating seeds, the one actual expert, was able to demonstrate that it is always a bad choice.

Did you notice that pressing the reset button of a Arduino Uno in Wokwi simulation creates a new seed. That is so cool, even the random noise is simulated. Moderator edit: perceived call to battle removed

I copied this code to my UNO, it still doesn't achieve what i want it to. A random number from 0 to 2 at the start of the script which remains te same and doesnt get overwritten during the loop. However i do want it to change after a reset.

I already did, I used the code Koepel sent in the thread which didn't work the way i wanted it to.

Random function not randomising after reset

Projects Programming

Coding_Badly August 24, 2023, 7:36pm 22

Post #53. It's marked as the solution.

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Random function not randomising after reset

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