Latest MegaDrum schematics. 32 inputs.

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Re: Latest MegaDrum schematics. 32 inputs.

Postby isque » Sun Mar 07, 2010 2:47 pm

Thanks both Dmitri & Jman 31,now i c the more.But in this topic's PCB design by Dmitri can be printed?it is stable?
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Re: Latest MegaDrum schematics. 32 inputs.

Postby Firelord » Sun Mar 07, 2010 2:53 pm

isque wrote:Thanks both Dmitri & Jman 31,now i c the more.But in this topic's PCB design by Dmitri can be printed?it is stable?

Yes, you can use the provided PDF/KiCad files to print the layout, just make sure that the printed image is not scaled (i.e. it must be a 1:1 print).
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Re: Latest MegaDrum schematics. 32 inputs.

Postby isque » Sun Mar 07, 2010 3:09 pm

Firelord wrote:
isque wrote:Thanks both Dmitri & Jman 31,now i c the more.But in this topic's PCB design by Dmitri can be printed?it is stable?

Yes, you can use the provided PDF/KiCad files to print the layout, just make sure that the printed image is not scaled (i.e. it must be a 1:1 print).

Thank you,i will start to rock megadrum soon. ;)
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Re: Latest MegaDrum schematics. 32 inputs.

Postby isque » Mon Mar 08, 2010 3:28 am

Firelord wrote:
isque wrote:Thanks both Dmitri & Jman 31,now i c the more.But in this topic's PCB design by Dmitri can be printed?it is stable?

Yes, you can use the provided PDF/KiCad files to print the layout, just make sure that the printed image is not scaled (i.e. it must be a 1:1 print).


HI,Firelord,I have an other question,How can i know the size of this topic's PCB design by Dmitri.
isque
 
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Re: Latest MegaDrum schematics. 32 inputs.

Postby Firelord » Mon Mar 08, 2010 9:06 am

isque wrote:HI,Firelord,I have an other question,How can i know the size of this topic's PCB design by Dmitri.
By measuring the board dimensions. Here's what I got:

analog_board_dims.png

digital_board_dims.png
You do not have the required permissions to view the files attached to this post.
Last edited by Firelord on Mon Mar 08, 2010 10:04 am, edited 1 time in total.
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Re: Latest MegaDrum schematics. 32 inputs.

Postby isque » Mon Mar 08, 2010 9:25 am

Thanks so much,Firelord.
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Re: Latest MegaDrum schematics. 32 inputs.

Postby jplavareda » Thu May 06, 2010 2:04 pm

Hi all! I have some questions:

1- In case I use 4851 instead of 4051, should i leave the spaces for bat85 empty or should i jumper them?

2- I would like to "DIY" my own megadrum, but i think that 32 inputs are too many for my needs. What should i do if i´m planning to build 16 inputs only?

3- Is this the right atmega chip: http://www.e-farnellnewark.com.br/8bitmicrocontrollericmemorysizee,product,01M6898,1271.aspx

4- Is 6n138n equal to 6n138 ?

5- The pads are made with piezos, right?

Thanks!
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Re: Latest MegaDrum schematics. 32 inputs.

Postby dmitri » Thu May 06, 2010 3:01 pm

jplavareda wrote:Hi all! I have some questions:

1- In case I use 4851 instead of 4051, should i leave the spaces for bat85 empty or should i jumper them?

Leave empty

2- I would like to "DIY" my own megadrum, but i think that 32 inputs are too many for my needs. What should i do if i´m planning to build 16 inputs only?

Leave out unneeded 4051s and associated diodes/resistors.


No, it is rated for 8 MHz max.

4- Is 6n138n equal to 6n138 ?

Yes.

5- The pads are made with piezos, right?

This is a signal reading part of pads.
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Re: Latest MegaDrum schematics. 32 inputs.

Postby jplavareda » Fri May 07, 2010 3:39 pm

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Re: Latest MegaDrum schematics. 32 inputs.

Postby zaklinacz » Fri May 07, 2010 4:21 pm

Hi,
I'm not Dmitri, but yes - you can use this ATmega
BR
Michal
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