You will be installing the 14-pin DIP socket to U1. This will hold an LM339 quad comparator which compares the voltages output by the joystick to voltages from the voltage ladder.
WHAT IS A QUAD COMPARATOR?
Then you will install a 0.1μF decoupling capacitor to C2.
Tools Needed
- Soldering iron
Parts Needed
- 1 x 14-pin DIP socket
- 1 x 0.1μF capacitor
Instructions
- Find the footprint for U1 on the board.
- Tape the socket across the top to hold it in place.
- Like with the 40-pin socket of the last section, solder two corners at opposite ends first, so you can correct any problems with positioning.
- If everything looks good, solder the rest of the pins.
- Install a 0.1μF capacitor to C2, footprint pictured.
