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Posted: Sun Sep 29, 2002 12:28 am
by Asphix
Hey, today i finally hooked up my display to my fans to run them all off the gpo's as a baybus. However it is not working. I have a momentary switch hooked up to the CENTER of the keypad to act as the catylist. I programed what i wanted happening in LCDC.

To rule out the switch i switched the programming so that gpo 1 toggles through on/off/flash when you click on the LCDC tray icon...

Now, the fans are off by default on all gpo's except what appears to be GPO 3. When i plug them into that GPO they turn on as soon as the connection is made.

Am i doing something wrong? can someone please help me here? i would greatly appreciate any help.

Posted: Tue Oct 01, 2002 12:54 pm
by linear
Was that by any chance a LK-204-25-PC?

Cause if not, what's wrong is you're truing to draw 100 mA current or more from a GPO rated for 20 mA. The GPOs on most models are not suitable for directly driving fans. Additional circuitry is required. The -PC is an exception.