Here is a smoothed version of the classic OBV indicator with a signal line. You can use it to look for signal line crossovers and divergences. The signal line is a 10-day EMA
of the OBVM line. Typically, the signal line can vary from 10 to 50.
This was just published by Vitali Apirine in the latest issue of Stocks & Commodities
(April 2020) p22-25
Please let me know if you want me to publish any other indicators or if you have any questions!