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[...] Also 7805 usually has a voltage drop of ~1.2 volt. So suggest you to atleast use arnd 7v.
the following are my connections: [...]
Quote from: streamlinedwings on August 26, 2012, 01:37:30 AMthe following are my connections: [...]How did you wire up the DTMF decoder and connected it to the L293?Please post a schematic of how you made it if possible.
Seems you are not pulling enable pins to low. "Without giving input" - doesn't mean its low.Remember if enable pins are not connected to gnd or high. Then its in high impedence state/floating. And thus your motors would behave strangely.Also 7805 usually has a voltage drop of ~1.2 volt. So suggest you to atleast use arnd 7v.Hth.Ankit