You got it! Here's a post I made in another thread about Kelly Bets.

The fraction of your bankroll you should risk on any try in a roughly even chance game = 2p-1

Where p is the probability of winning.

In the case of roulette p=18/37 so 2p-1 is 36/37 - 1 = -1/37 = -2.7%

The negative implies that your best strategy is not to bet at all, since it is a negative expectation game!

However let's assume your chance of winning was 52/100.

Now 2p-1 is 104/100 -1 = 0.04 so you should risk 4% of your bankroll on each bet.

If your chance of winning was 55/100 you should risk 110/100-1 = 10% of your current bankroll on each bet.

All the way up to a dead cert 2x (100/100) -1 = 1 or 100% of your bankroll.

This is really designed for a positive expectation game eg Sports betting where you have inside information, or advantage play where you have a calculated edge.

As for computers, I personally wouldn't use one in the UK. Although technically they are not illegal here like in the States, Casinos are on the look out. Having an ear piece, hand in a pocket, wheel watching, late bets and winning, blue tooth signal etc.

They mostly tolerate VB players as they generally have a lower edge so the casino changes the conditions and they can't prove anything.

But a computer can really milk them quickly, so they will ban suspects. And a lot of casinos come under the same group. So if you get banned by Grosvenor you'll get banned from all their casinos and they swap info so you may find yourself banned by Coral, Genting, Stanley. ... loads of them. Suddenly, nowhere near to play.

So personally computers are not for me, but given the right country they may be OK.