From: Tomi H. <toh...@ma...> - 2005-09-09 16:01:35
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Hello! I just happened to bump in to your site. It was interesting reading. I have been planing something like that for some time now. I went quickly through your pages and I look through your page http://ssl.bulix.org/projects/lcd4linux/wiki/HD44780 There was one thing that puzzeled me.. Maybe you can guide me.. On that page you have good table of pin orders of prallel port. And I was just comparing it to the picture of two displays on one bus (https://ssl.bulix.org/projects/lcd4linux/attachment/wiki/HD44780/multiple.png?format=raw) Well now.. cut straight to the point: - LPT-port should have pin 13 as output (according to your table and other sources) and still on that picture it seems taht second displays E ('enable' I assume) seems to go to pin 13 of the D25. I would have thought that you have to have 'out'-pin for E??!? Similarry you have connected the E-pin of the first display to the LPT-pin 1 that is according to your table 'out'-pin. So please correct if I am wrong since I am planing to build your system any day soon.. Thanx to you all for the great site and your work! Tomi |