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Connect two more LED and Resistors to your Arduino. Code it to blink a sequence on all LED.
Exercise 3.1: Voltage Divider
Assembly the circuit with resistors of two different values. Try calculating the voltage between your resistors, and check with the multimeter if it’s correct.
Exercise 3.2: Light Sensor
Build a circuit and code it to turn on an LED when it gets dark using a Photoresistor.
Optional: code it so the LED fades smoothly between dark and light states.
Exercise 3.3: Reverse Parking helper
Using the VCNL 4040, build a circuit with at least 3 led’s and code it show proximity level (i.e as an object moves closer, more led’s turn on)
Alternative: Operate a motor so it “reverses” itself until it is too close to an object.