Locate a 1K resistor (brown, black, red). Insert the resistor into the circled holes connecting column 31 to the LED.
When it is completed it should look like this:
| Home | Previous Chapter | Previous Page | Next Page | Next Chapter |
| Introduction to PIC programming. |
| 3 more LEDs |
| Home | Previous Chapter | Previous Page | Next Page | Next Chapter |
| Home | Previous Chapter | Previous Page | Next Page | Next Chapter |