Step 9: Solder resistors and photoresistors to protoboard

Solder one large and one small photoresistor (from the set of five) in series on the protoboard (make sure they are on the same side as the LEDs).  Bend the leads of the photoressitros so that they are pointed directly at one of the LEDs.  Solder a 4.7kOhm and 10kOmh resistor in series with these two photoresistors (fig 4).

Repeat these steps for the second LED.