How to make an X-10 wall switch capable of local dimming.
Use at your own risk!
Based on a work from an original unknown author.
1. Turn off the power to the X-10 switch that you wish
2. Remove the switch from the wall.
3. Do not attempt to convert the switch while power is
4. If you didn't already know 1-3, you probably shouldn't
be playing with a soldering iron - stop here!
Step by step instructions:
Remove the back of the module by pushing in, in turn, each of the four
tabs on the four back corners.
Remove the one visible screw, lock washer and nut.
Pry at each of the four tabs that hold the printed circuit board in place
until the circuit board is free. A very small metal plate and the two (house
and unit) code dials will probably fall out.
Glob some solder between the two points shown in the picture below. This
connects the third pin from the left in the bottom row of the IC to the
left switch pad.
Reassemble the X-10 module by first removing the front of the plastic shell
from the metal bracket. This can be done by pulling on the tab that the
screw was removed from to release the plastic tab just under the screw
hole. Next, remove slide switch assembly by pushing in on the plastic tabs
from inside the plastic shell half. Be careful not to lose the very small
plastic plunger and the tiny spring under it.
Replace the house and unit code dials and then reinstall the circuit board
in the front shell half. Carefully replace the small metal plate accross
the two metal prongs on the circuit board. If the plate is properly placed
it will be capable of a rocker switch motion. Now, carefully (so as not
to disturb the metal plate), replace the slide switch assembly by pushing
it in until the tabs click into place.
Replace the metal bracket, the screw, lock washer and nut, and then the
back half of the shell.
Reinstall the switch. Turn on the power and the job is done. Now
a tap on the switch will turn it on or off. Press and hold the switch to
dim the light. Continue to hold the switch and it will brighten. The dim,
brighten action will continue until you release the switch. By the way,
when a 3-way is modified for local dimming, it also dims at the slave switches.