legend killer
Member
Hi everyone,
I wanted to make a parking system.The system will count the number of vacancies left in the parking.I want to sense the entry or exit of cars with an LDR and LED shining on it.
I've made the circuit as shown in the attached image,one for the entrance side and the other for exit side.The outputs goes to the microcontroller.The system is working fine(still on breadboard).
The problem I am facing is that I have to change the 100k resistor as per the ambient light.Is there a way to overcome this difficulty.
Thanks
I wanted to make a parking system.The system will count the number of vacancies left in the parking.I want to sense the entry or exit of cars with an LDR and LED shining on it.
I've made the circuit as shown in the attached image,one for the entrance side and the other for exit side.The outputs goes to the microcontroller.The system is working fine(still on breadboard).
The problem I am facing is that I have to change the 100k resistor as per the ambient light.Is there a way to overcome this difficulty.
Thanks