MX2 keypad doesn't work :'(

vinz2k · Post by **vinz2k** » Mon Nov 01, 2004 2:25 pm

hy all...

well i ve got a problem with my MO MX2 ...

when i am in the "test display" menu of ldlc... when i type on left right up down F1 F2 or ENTER .... there is nothing display on the log ...

does that seem that my lcd is broken ???

ps: i can send text like "L.C.D.C!!!!" ..so there is a connection between the LCD and my computer ....

thank you

Tom · Post by **Tom** » Mon Nov 01, 2004 2:41 pm

Which pins do you have you keypad connected to?

vinz2k · Post by **vinz2k** » Mon Nov 01, 2004 2:57 pm

like this ....

Tom · Post by **Tom** » Mon Nov 01, 2004 3:03 pm

Can you short out a row and a column with a piece of wire, so we can determine if the problem is the display or the keypad?

vinz2k · Post by **vinz2k** » Mon Nov 01, 2004 3:23 pm

like this ??? :

what will this trick give me for result ?

Tom · Post by **Tom** » Mon Nov 01, 2004 3:47 pm

This isn't a trick. This is what happens when you press a key, but we are using a wire to inplace of a key on the keypad. When you press a key, a row and a column is being shorted. If you have the row shorted with the column, and you see a character in the log, the problem will be with your keypad.

What you have in the picture is correct. You are shorting row 1 column 6.

Let me know if you get a character from this.

vinz2k · Post by **vinz2k** » Wed Nov 03, 2004 10:15 am

well it works & it gave me some positive result :

Attempting to connect to COM3
Connection to COM3 was successful
Resetting contrast/brightness
Keypad input-> Dec:83 Hex:53 Chr:S
Keypad input-> Dec:83 Hex:53 Chr:S
Keypad input-> Dec:83 Hex:53 Chr:S
Keypad input-> Dec:83 Hex:53 Chr:S
Keypad input-> Dec:83 Hex:53 Chr:S
Keypad input-> Dec:84 Hex:54 Chr:T
Keypad input-> Dec:83 Hex:53 Chr:S
Keypad input-> Dec:83 Hex:53 Chr:S
Keypad input-> Dec:83 Hex:53 Chr:S
Keypad input-> Dec:83 Hex:53 Chr:S
Keypad input-> Dec:84 Hex:54 Chr:T
Keypad input-> Dec:84 Hex:54 Chr:T
Keypad input-> Dec:85 Hex:55 Chr:U
Keypad input-> Dec:85 Hex:55 Chr:U
Keypad input-> Dec:85 Hex:55 Chr:U
Keypad input-> Dec:86 Hex:56 Chr:V
Keypad input-> Dec:80 Hex:50 Chr:P
Keypad input-> Dec:83 Hex:53 Chr:S
Keypad input-> Dec:83 Hex:53 Chr:S
Keypad input-> Dec:83 Hex:53 Chr:S
Keypad input-> Dec:83 Hex:53 Chr:S
Keypad input-> Dec:83 Hex:53 Chr:S
Keypad input-> Dec:84 Hex:54 Chr:T
Keypad input-> Dec:83 Hex:53 Chr:S
Keypad input-> Dec:83 Hex:53 Chr:S
Keypad input-> Dec:83 Hex:53 Chr:S
Keypad input-> Dec:83 Hex:53 Chr:S
Keypad input-> Dec:83 Hex:53 Chr:S
Keypad input-> Dec:83 Hex:53 Chr:S
Keypad input-> Dec:83 Hex:53 Chr:S
Keypad input-> Dec:83 Hex:53 Chr:S
Keypad input-> Dec:83 Hex:53 Chr:S
Keypad input-> Dec:83 Hex:53 Chr:S
Keypad input-> Dec:83 Hex:53 Chr:S
Keypad input-> Dec:83 Hex:53 Chr:S
Keypad input-> Dec:83 Hex:53 Chr:S
Keypad input-> Dec:83 Hex:53 Chr:S
Keypad input-> Dec:83 Hex:53 Chr:S
Keypad input-> Dec:83 Hex:53 Chr:S

that 's bad news for me ?

Tom · Post by **Tom** » Wed Nov 03, 2004 10:35 am

It looks as though there is something wrong with the keypad. It could possibly be the keypad connector. The unit is fine, since you got the characters showing up on the screen. If you want to get a new keypad, and you want a price inquiry, you can contact sales at info@matrixorbital.com.

Best Regards,