Now, it's time to build and test two phototransistor circuits to give your ActivityBot phototransistor "eyes." Leave the piezo speaker circuit in place.
- (2) Phototransistor (#350-00029)
- (2) 0.01 µF capacitor (labeled 103)
- (2) 220 ohm resistor (red-red-brown)
Build the Light Sensor Circuits
Build the circuit shown below.