ahmedragia21
Member
Hi, im trying to make a modulated Sensor For " Line following Robot" sensor, im using LDR and Red Led , im trying to modulate the emitter by a frequency like 685Hz and recieve it , can LDR response that ? i dont have phototransistor here in egypt to repalce it .. any suggesstions if that circuit can work ??
also can i replace the diode 1N4148 by a 1N4001 ??
thanks
also can i replace the diode 1N4148 by a 1N4001 ??
thanks