czabhinav
Newbie level 5
I have a blinker circuit which turn ON & OFF 100 yellow leds using NE555 timer IC. It is working properly. Now I need to lower the intensity of yellow leds during night and increase the intensity during day. The power to the circuit is given using a solar panel. Solar panel is connected to a solar charge controller and a battery is also connected. I have recently made this solar charge controller using arduino and its working fine.
I want to know how can I reduce the intensity of leds at night and bright them up in daylight. First I thought that during night, solar panel output voltage will be very low. So I can simply read the solar panel voltage. If its high, that means its a day time and we have full sunlight and if voltage is low, that means its night or no sun light is available. In this way I can determine sun light availability, but then how to control leds intensity using this. I connect my blinker circuit as a load to the solar charge controller. So I thought of giving PWM pulses to load which will reduce the amount of voltage going to blinker circuit so leds intensity will be reduced. But I don't think that would be appropriate solution. Is there any good way of doing this.?
Please help
I want to know how can I reduce the intensity of leds at night and bright them up in daylight. First I thought that during night, solar panel output voltage will be very low. So I can simply read the solar panel voltage. If its high, that means its a day time and we have full sunlight and if voltage is low, that means its night or no sun light is available. In this way I can determine sun light availability, but then how to control leds intensity using this. I connect my blinker circuit as a load to the solar charge controller. So I thought of giving PWM pulses to load which will reduce the amount of voltage going to blinker circuit so leds intensity will be reduced. But I don't think that would be appropriate solution. Is there any good way of doing this.?
Please help