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panky
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Posted: 10 October 2018 at 9:24am | IP Logged Quote panky

G,

My error, I am using the TPPEN (pin38)) on the ER 9" display as Touch Int and it is working just fine ( I had mis-labeled my diagram).

panky

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Grogster
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Posted: 10 October 2018 at 7:35pm | IP Logged Quote Grogster

@ palcal - Hindsight is a wonderful thing. You are right, of course. But the issue is that no-one knew of the ER displays when the first TFT compatible MM's were created. Geoff and Peter used displays from eBay or AliExpress, as you would expect. Any new MM I design that needs a TFT WILL use the ER series, for precisely the reasons you and WW point out.

@ panky - Re: Pin-38, thanks a bunch. Now I know I have that pin connection correct.

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Geoffg
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Posted: 10 October 2018 at 11:32pm | IP Logged Quote Geoffg

Grogster wrote:
Any new MM I design that needs a TFT WILL use the ER series, for precisely the reasons you and WW point out.

I believe that would need some consideration. For something that you will only use that would be fine but I am not sure that it would be good enforcing that rule for something sold to the public.

For a start, ER panels are not that cheap when you factor in the cost of freight. In fact BuyDisplay.com prices + freight are about equal to typical EBay prices with the normally free freight - so no advantage there. Also, the wide range of options can lead newcomers to purchase something that would not work so you would have to specify EXACTLY the ER part number that is compatible with your board.

Having said that, ER is a quality manufacturer and BuyDisplay.com is a reliable supplier so that is a definite plus.

My main concern is that the ER panels are so different that all the documentation and all the experience on the Back Shed will not help a newbie who gets into trouble. So, perhaps some caution.

Geoff
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Posted: 11 October 2018 at 1:39am | IP Logged Quote WhiteWizzard

My input would be to simply keep the 40-pin header as is current (and as documented in the MM User Manuals), and to optionally use the adaptor board whenever you use a 7",8", or 9" ER SSD TFT.

My only concern is the 'off-set' mounting holes!

WW

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Posted: 11 October 2018 at 8:44am | IP Logged Quote Grogster

You both have a point. I jumped the gun a little there. The original concept remains. The ER are the best choice for those wanting 8" or 9" TFT's, so I guess you then get the best of both worlds.

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Posted: 16 October 2018 at 4:15pm | IP Logged Quote Grogster

My 9" display has arrived - that was quick. Four days from China DHL.





Cute.

Comes in a nice cardboard box, but the actual LCD module is wrapped up in bubble-wrap packaging, with no anti-static bag - a little naughty, I feel, as this device would be static sensitive. It is definitely not anti-static bubble-wrap - that is usually pink in colour.

I could see how they had wrapped it up as there was only a few layers of bubble-wrap, so I put on my anti-static strap before I unwrapped it, but yep - no anti-static bag or protection at all. I'm not super happy about that. Otherwise, VERY well packaged, and I am just waiting for the adaptor PCB's to arrive so I can try it out!

Edited by Grogster on 16 October 2018 at 4:17pm


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