Help, if you can. I am connecting an LCD and I have several 'symptoms' to resolve.
I am using the same display from 411techsystems.com as shown in the wiki (DM-2004A-B-B6NTDW) Symptoms: - display outputs gibberish characters on lines 1/3 when T2 writes to it. But I never see gibberish on lines 2/4 - When adjusting the contrast with the 10k pot, it would appear that only lines 1/3 are 'active' in the display. -I put an SPST switch on +5v input (pin 15 on the mono8) and here's the really weird part. When I turn on the switch, the display and the backlight LEDs come on. When I turn off the switch, the LEDS remain on, but dim down a bit. If I disconnect the 5vdc source the T2 - the LEDs still stay on. Obviously something is wrong, somehow, somewhere, but I have no clue what it is (and neither do you I bet - hi hi) I have checked and checked and double checked all wiring, solder bridges, cold joints, etc. Any suggestions, ideas, comments, queries, cheap shots? K0JDD John
