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Programmer for LED Lights

LEDs have an effectiveness higher than that of just about all the customary lights and hence are used almost everywhere. The system in the article is basically a driver that can control two groups of white LED’s. The LED’s are operated in PWM mode using a suitable timing to obtain the required colour. Moreover, the entire system can be operated wireless at a frequency of 433MHz using amplitude modulation. On the receiver die, it’s a powered by a PIC16F876A which act as a decoder for the received amplitude modulated signal. The decoded signal is then processed by the controller to generate the required PWM signal for the two independent group of LED’s.  The group of LED’s are driven by using a common source transistor and therefore the design is only… Continue reading