I am still very vague as how modulus works in a program, i have read the reference & wiki, but it hasn’t sunk in.

I have no code, but here is something ish.

```
int counter = 0;
int overflow = 0;
void setup(){ }
void loop()
{
if counter >= 32767 ?? // mod % 200, add the remainder back into counter, take 32600 divide by 200 & add to overflow
if counter <= -32767 // mod % 200, add the remainder back into counter, take -32600 divide by 200 & add to overflow
dosomething();
counter = counter++;
or
dosomethingelse();
counter = counter--;
```

That’s roughly what i was thinking of doing, somehow?