Tag Archives: light sensor

Dark and Light Activated Relay

Schematic Diagrams      Comments Off on Dark and Light Activated Relay

This is the basic dark and light sensor which using photoresistor as sensing component. The transistor act like as a switch, when the “switch” in on condition then the relay will be activated. The potensiometer adjust the trigger ‘on’ level. The diode in the circuit diagram shows to be 1N914…. Read more »

Color Detector

Schematic Diagrams      Comments Off on Color Detector

This is the color sensor circuit diagram. This circuit will sense eight colors that are: , green, red and blue (as primary colours); magenta, cyan and yellow (as secondary colours); and black and white. It’s will be very useful for robotics project. The circuit is based on the fundamentals of… Read more »