The motor is not turning off in the HT12D and HT12E circuit, why is so?

[txrxmo]

Hi, i've assembled a circuit and schematics for a Tx/Rx circuit with the ic chips HT12d, HT12e and L293D driver. After turning on the circuit after selecting the input in D0-D3, the motor turns on but when turning it off, it doesnt turn off. The supply im using for each circuits and the motor is 9v. Also tried a 3V energizer with the motor but it still doesnt turn off. It only turn off when using a half-used 3v battery and when its on a breadboard, the problem is intermittent but on the pcb, it doesnt turn off at all. Also tried using different relays such as 5V and 9V but to no luck. Please help!

 

[chuckey]

Have you fitted the external extra four diodes? They protect the IC from breakdown from motor switching transients
Frank

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Have you fitted the external extra four diodes? They protect the IC from breakdown from motor switching transients
Frank

 

[txrxmo]

yes, i have already fitted in the 4 diodes in the transmitter part but the motor still continue to run.