Datta is Brahma, Vishnu and Mahesh in to one all encompassing deity.According to Hindu mythology, Lord Dattatreya is believed to be the combined avatar (incarnation) of the Hindu trinity (Brahma, Vishnu and Shiva). Sage Atri prayed to the Hindu trinity, and when they were pleased with his penance, they appeared before him and offered to grant him a boon. Sage Atri asked for an offspring that would have their benevolent qualities. Thus, Lord Dattatreya was born.
A Yantra is an instrument, or a talisman or a mystical diagram usually in copper. It is a technique or path, considered the simplest and shortest, through which one can attain one's desires, and fulfill one's wishes. It is said that the 'Deities' reside in the Yantras and by performing 'Puja' or worship of Yantras, one can appease them, remove the malefic effects of planets, and increase the flow of positive influences. Procedures to be followed by you to place this energized Yantra.
Yantra Guidelines:-
Take the water with any leaf from any tree and sprinkle the water on yourself followed by sprinkling the water on the Yantra.
First purify your body and start with a clear and positive mind frame.
Find a place on the floor facing east, where you will be undisturbed.
Light the incense or diya. (It does not matter how many you light).
Lay a fresh flower and a fresh fruit on the altar.