Try this out

Using only Google finance charts

of 1 month duration

using 2 indicators simultaneously

rsi, and

william % r

both set to 14 with 30min interval

buy everytime when rsi is at the bottom and w%r is at the top, both simultaneously, except when the trend is down!

sell everytime when rsi is at the top and w%r is at the bottom, both simlutaneously, except when the trend is up!

use adequate stop loss.