Received my 20x4 display in the post today and spent half an hour trying to make it working. I messed up with the wiring for sure and scratching my head why it does not work .. yes, the RS and E pins were swapped .. silly me. Anyway, result .. as photos posted below (oh yeah, chosen this black over greenish LCD since it cost me only RM38/pc)...!
Next mini project will be, to put this display and TT4 into much better casing and to get the PS/2 keyboard interface wired up .. and to get the display working with OpenTracker2 too. If I fancy myself, might use STAMP2 but wondering if mine has serial memory built-in .. otherwise, I'll just wait a bit for Scott/ArgentData to come up with new firmware which has LCD/keyboard support.