petel@teksce.SCE.TEK.COM (Pete Lancashire) (09/30/88)
How to modify the X10 Minicontroller.
V+ = The supply positive rail as seen by the 1000uf/25V electrolytic
V- = The supply negitive rail as seen by the 1000ug/25V electrolytic
The suppy voltage is around 19-20Volts
The house code is selected by a rotary PC switch which either selects
open or V+.
The device/function codes are selected by a 3 out by 8 in keyboard scanned
matrix.
Here is what I have so far.
House Code selection.
Pin Label
----------
8 H1
9 H2
10 H4
11 H8
H8 H4 H2 H1 H8 H4 H2 H1
-- -- -- -- -- -- -- --
A 0 1 1 0 I 0 1 1 1 0 is pulled to V+
B 1 1 1 0 J 1 1 1 1 1 is open or floating
C 0 0 1 0 K 0 0 1 1
D 1 0 1 0 L 1 0 1 1
E 0 0 0 1 M 0 0 0 0
F 1 0 0 1 N 1 0 0 0
G 0 1 0 1 O 0 1 0 0
H 1 1 0 1 P 1 1 0 0
Device/Function selection.
===============================================
|Y-PIN | |
===============================================
| 17 | 1 2 unused | Y-PINs are the inputs
| 20 | 3 4 ON | X-PINs are the outputs
| 18 | 5 6 ALL ON (all lights on) |
| 19 | 7 8 BRITE |
| 16 | 9 10 unused SEE NOTE!!!! |
| 22 | 11 12 OFF |
| 21 | 13 14 CLEAR (all units off) |
| 23 | 15 16 DIM |
===============================================
| | 1 28 25 < X-PIN |
===============================================
NOTES: The Y-Pins are debounced and kept high with a 0.001uf (102) disk cap.
Pin 16 is tied high and needs to have the foil cut at the PIN and a
cap added.
Selection is done by a contact closure between an X and Y pin.
Example to turn off unit 7; first select unit 7 by shorting pins
19 and 1, then turn it off by shorting pins 22 and 25.
You can get the controller into a duplex box by pulling up the two big
caps and cutting off the part of the board where the switch matrix was.
That's all for now....
Next a circuit to do a device select then a function, something like
the Levitons
-pete
Pete Lancashire
petel@teksce.sce.tek
...!tektronix!tekgen!teksce!petel