Methods and apparatus for controlling devices in a networked lighting system

An integrated circuit to control at least one illumination source, comprising:

• a data reception circuit;
• an illumination control signal generation circuit coupled to the data reception circuit;
• and
• a clock generating circuit coupled to the data reception circuit, wherein:
• the data reception circuit extracts information from serial data input to the integrated circuit in coordination with a clock pulse generated by the clock generating circuit;
• and
• the illumination control signal generation circuit generates at least one illumination control signal to control the at least one illumination source based on the extracted information, wherein at least one switchable constant current control signal comprises a plurality of controllable switchable constant current control signals and each of the plurality of controllable switchable constant current signals is arranged to independently control at least one separate LED of the plurality of LEDs without any external components.