Newbie level 2
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!