Hi, For a course in the Industrial Design Master, we have to use communities in every step of a design face. Hence why I wanted to ask this probably straightforward question in this forum. As a group, we want to give the physical board game Risk some digital elements. We went to a Risk community t…

Suggest 3 switches, helps prevent mistakes (especially after a beer :wink: ). 1 for 1 2 for 2 3 for 3

Be aware that the Arduino can not generate truly random numbers. You need to seed the generator with some starting random number. The most reliable way, is to count continuously (not displayed) while you wait for a user event like a button push. You only need to do this once, at the beginning of the…

@anon57585045 is right. Arduino generates pseudo random numbers. I think the ESP8266 has a built-in hardware module for generating random numbers.

I usually use a photo diode on an analog input as the random seed. You can salt it and hash it out to a uint32_t to really randomize it.

It's possible to improve a little bit on the analog port read method: // random seed 1.04 // // produces a generally random number based on processing // error voltages from the readings taken from the analog to digital // conversion port // on the Arduino // 2016-02-17 32 bit test/demo version c…

You might be interested in this: [image] Entropy library - A study of entropy The use of hardware based random number generators is becoming very common; however, there is a great deal of variance in the quality of these entropy sources. This site is dedicated to examining several entr…

Thanks for all the replays!! I once did it like this: long randNummer = random(500); Serial.println(randNummer); So the 500 would than be 18 as that is the maximum amount you can roll with 3 dice, or 12 and 6 for 2 or 1 dice. But this would than not be accurate enough?

[image] ninanas98: But this would than not be accurate enough? random(18) gives a number between 0 and 17 inclusive. It's just wrong. Three dice can make 18, but the probability of any number 0 to 18 is not the same. You have to "roll" three dice byte d1 = random(6) + 1; so here d1 wil…

To roll three dice, use random(215), the divide by six twice, saving the remainders.

Nice. Then add them up… and add 3. And you prolly meant random(216). Doesn't seem easier than three calls to random(). The OP will also be rolling one or two not all three dice sometimes. You could make a table of 216 elements and index it with random(216), that might be the fastest if it mattered…

Help for community driven Master's project

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