KEYPAD.md

ELKA55 - KEYPAD

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Connector:

|___       _______________________|
   |_______|
   1......11

|______________________        ___|
                      |________|
                      A........K

Keyboard matrix:

X: B, E, F, 8
Y: 7, 9, 10, 11, C, D, G, I

* | E  | F  | B  | 8  |
--+----+----+----+----+
7 | M≡ | #  | C  | M- |
9 | ÷  | 5  | R  | 4  |
10| M* | 00 | ±  | ,  |
11| %  | 7  | ⋄  | 6  |
C | IC | 1  | +  | 0  |
D | –  | 3  | ×  | 2  |
G | PF | 9  | M⋄ | 8  |
I |*/= | M+ | M± |    |

note: M± should be M-PLUS SIGN ABOVE EQUALS SIGN (M and U+2A72 M-PLUS-EQUALS)

LEDs:

Pin2. Power
Pin4. GND
Pin5. OVF
Pin6. M