i'm having TSAL6200 emitter,Tssp6p38 receiver ,pic16f877a mcu and apr9600 voice chip.
the basic idea was when obstacle detected,mcu will activate the voice chip and alert the blind.
i stucked on emitter side,how can i modulate the signal without using mcu?can show me the circuit?
the basic idea was when obstacle detected,mcu will activate the voice chip and alert the blind.
i stucked on emitter side,how can i modulate the signal without using mcu?can show me the circuit?