Electronics

connect led to board

simplest circuit connect led to board to resistor


Led switch

led opens and closes by pressing switch


Charging capacitor

capacitor charges from the battery on pressing switch


led to petiometer

connect led brightness using petionometer

 


Dark Sensor

 able to control led brightness by putting finger on LDR


Touch sensor

led lights on closing circuit by touching it

 


timer 555 astable circuit

The led will switch on and off every 5 miili seconds


Task 2

Use the circuits on slide 61 as a reference to design a circuit that would turn on the LED when light is presented on the LDR and turn off the LED when there is no light presented on the LDR (notice it is the inverse function of the circuit). Prototype the design using a breadboard and the necessary components. Document the concept behind your design and the prototype.