Keypad problems with VK204-25

LK/ELK/VK/PK/OK/MX/GLK/EGLK/GVK/GLT Series

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swannie
LCD?
Posts: 3
Joined: Fri Jan 03, 2003 5:11 pm

Keypad problems with VK204-25

Post by swannie »

Hi all,

I just ordered one of the above displays a few days ago, and I can successfully display data on it, however I'm having problems reading the keypad. I'm running linux, and did a 'cat /dev/lcd' and used a paper clip to short pins on the keypad connector, I got nothing back (not even garbage data). To make sure the display is working, I tried 'echo "Test" > /dev/lcd' and all worked okay...

Any ideas???

Swannie
Henry
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Post by Henry »

make sure you have Rx and Tx lines wired up...
Henry J.
President
Matrix Orbital
swannie
LCD?
Posts: 3
Joined: Fri Jan 03, 2003 5:11 pm

hmm...

Post by swannie »

Just tested the meter, and pin 3 is okay.. any other ideas?

Swannie
Henry
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Post by Henry »

try it under a windowz machine?!?! I have very little experience with linux, sorry... try another cable?
Henry J.
President
Matrix Orbital
swannie
LCD?
Posts: 3
Joined: Fri Jan 03, 2003 5:11 pm

Solved!

Post by swannie »

*Sigh*, you were right the first time... User error... make sure that those pins are correct folks! Those numbers are printed on the inside of those DB9 connectors to help you!!! :)

Thanks for your help!!!

Swannie
Henry
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Post by Henry »

LOL.. glad it's resolved...
Henry J.
President
Matrix Orbital
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