robotfunk Posted January 29, 2010 Report Share Posted January 29, 2010 Hi, so I got a nice parcel from Hong Kong yesterday, with my two lovely looking blue 40x2 LCD screens ( from http://cgi.ebay.com/40X2-Character-LCD-Module-Module-LCM-HD44780_W0QQitemZ190337762891QQcmdZViewItemQQptZLH_DefaultDomain_0?hash=item2c5103c64b ) and I notice it has solder holes spaced for a nice IDC header, so no soldering to the LCD needed, great! so I start crimping me some cables and look at the data sheet, compare it to the core32 and it matched perfectly, well almost :) it seems that the pins are in the right order, but flipped vertically. I thought I could fix it by rotating a cable header, but that didn't work out however I tried. Now I've got some helpful hints in the chat how to fix this, but it involves crimp pins and tool which I don't have, and I think I have an idea how to McGyver something ugly to fix it, but before I go to all the effort, I wonder, is it really flipped? Am I not overlooking something obvious? Interpreting the datasheet wrongly perhaps? Here is the datasheet with pinout by the way: And if I'm right and I do have to hack something together, does anyone brighter than me have a clever idea that does not involve manually swapping every 2nd cable in a ribbon cable, or require 8 parts like the kludge I had in mind and still have to test? any ideas much appreciated Quote Link to comment Share on other sites More sharing options...
TK. Posted January 29, 2010 Report Share Posted January 29, 2010 In the hope that these pictures are saying more than 100 words ;) Best Regards, Thorsten. Quote Link to comment Share on other sites More sharing options...
philetaylor Posted January 29, 2010 Report Share Posted January 29, 2010 I had exactly the same issue with this one and it took me quite a while (and plenty of wasted IDC plugs) before I figured it out! Phil Quote Link to comment Share on other sites More sharing options...
robotfunk Posted January 29, 2010 Author Report Share Posted January 29, 2010 DOH! I soldered the connectors on the LCD side, thinking that would be 'component side' prepare for more n00b comedy from this end Quote Link to comment Share on other sites More sharing options...
philetaylor Posted January 29, 2010 Report Share Posted January 29, 2010 Yes I very nearly did that! Be very careful when removing the connector. I would take each pin out seperately as you don't want to break any tracks.... Phil Quote Link to comment Share on other sites More sharing options...
robotfunk Posted January 30, 2010 Author Report Share Posted January 30, 2010 yeah that's what I ended up doing. Not a fun job. Still I don't seem to have ruined it, got it lighting up and displaying text connected to the core, albeit garbled nonsense :) investigating further... Quote Link to comment Share on other sites More sharing options...
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