I want my Megadrum

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Re: I want my Megadrum

Postby mojamusic » Sat Sep 06, 2008 8:35 pm

The LCD has 16 pins. Is the first one considered to be ground?
To clarify, are all 16 pins connected to the LCD or is one connected to a separate "ground"?

Also, do I locate 1 - 16 from left to right on the ribbon cable?
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Re: I want my Megadrum

Postby dmitri » Sat Sep 06, 2008 11:43 pm

mojamusic wrote:The LCD has 16 pins. Is the first one considered to be ground?

It is not considered, it is a specification of H44780 LCDs to connect pin 1 to ground.

To clarify, are all 16 pins connected to the LCD or is one connected to a separate "ground"?

Nothing separate, nothing hidden, everything is in the schematics.

Also, do I locate 1 - 16 from left to right on the ribbon cable?

Doesn't matter as long as you connect 1 to 1, 2 to 2, 3 to 3 and so on.
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Re: I want my Megadrum

Postby mojamusic » Sun Sep 07, 2008 11:39 pm

I got it now.

I made another error in attaching the USB socket to the the main board. In hind sight I should have extended it.

Is it possible to undo the solder connection?

After this, I have only ONE MORE question. :P
Last edited by mojamusic on Tue Sep 09, 2008 1:47 am, edited 1 time in total.
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Re: I want my Megadrum

Postby mojamusic » Tue Sep 09, 2008 1:22 am

Let me pose my last question regarding assembly:
I have read the schematic for Synthex's All In One PCB.

I am still unclear about how to connect "ground" to the actual jacks. From this post I can see that ground should be connected to all jacks.

In Dmitri's builds, I see a wire across the sleeves of all the jacks. Can you please tell me what that is? Copper?
Where does the wire end?

(I hope this makes sense.)
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