Arduino Uno and find the recommended operating condition limit for each DC Current per I/O Pin = ?

Look at the Spec Sheet of the LED and find the Continuous Forward Current = ?

Review page 13 of the reading assignment to determine a resistor value for operating the LED at the maximum brightness that will not exceed the spec of the Arduino or LED (it is not the value shown in the example). R = ?

If you own a laptop (Windows, Mac or Linux),please download the Arduino program and bring to lab. If you do  not own a laptop there are desktop computers you can use in the lab.