PCB DESIGN - All In One 32 inputs with 74HC4851

[Synthex]

If you only have 3 74hc4851/MAX4558, you can use it with 32 inputs design and 32 inputs firmware, but you'll be able to use only 24 inputs.

Yes, but for the price, you can add the last 74hc4851/MAX4558

[dmitri]

To all:
If you can get 74hc4851/MAX4558 I advise you to use Synthex's "All In One 32 inputs" design - it is much simpler (over 90 discrete components less to solder). I haven't tested it myself but I guess Synthex has. The only drawback with 32 inputs version of MegaDrum at the moment is that MegaDrum Controller doesn't support it yet.

[Synthex]

To all:
If you can get 74hc4851/MAX4558 I advise you to use Synthex's "All In One 32 inputs" design - it is much simpler (over 90 discrete components less to solder). I haven't tested it myself but I guess Synthex has. The only drawback with 32 inputs version of MegaDrum at the moment is that MegaDrum Controller doesn't support it yet.

If you can't get 74hc4851/MAX4558, I am going to receive some parts for the kit.
Of course, i tested it.
MegaDrum Controller will work with 32 inputs version ... ( aquawicket ) ...

[estregan]

If you only have 3 74hc4851/MAX4558, you can use it with 32 inputs design and 32 inputs firmware, but you'll be able to use only 24 inputs.

Thanks for this Dmitri, I might just use 3 to save on cost, I'm a cheapo, you know.

[Synthex]

If you only have 3 74hc4851/MAX4558, you can use it with 32 inputs design and 32 inputs firmware, but you'll be able to use only 24 inputs.

Thanks for this Dmitri, I might just use 3 to save on cost, I'm a cheapo, you know.

[slug]

Is there a way to get a schematic and not a layout version of this design? I'd like to make it on a vector board and save on the PCB printing costs. I think this may have been asked before, but I didn't see a response to that direct question. Thank you.

[Synthex]

http://www.megadrum.info/schematics.php
http://www.megadrum.info/forums/viewtopic.php?f=3&t=112#p1278

[Gilles]

Hello synthex do you also have the newest version of the routed version in diptrace. In the forum read this:

Synthex Post subject: Re: PCB DESIGN - All In One 32 inputs with 74HC4851Posted: Fri Jan 25, 2008 11:43 pm



Joined: Fri Oct 12, 2007 7:06 am
Posts: 440
Location: France Here is the DipTrace file of my PCB design for all of you !



Please submit in this topic your modified versions
Thanks !

Synthex

But there is no file to download. Is it possible to get te file in dip format.

Greetings,

Gilles

[Synthex]

There is no DipTrace file for download.

This older version is an unrouted version for test.

[shaman]

This is my first post on this forum so I would like to say hello to all megadrum forum users.
I have a great respect for Dimitri, for his idea and continued excellence.
Also big thanks for Synthex for his contribution in AllInOne designs.

I have a few questions to Synthex:
1) Could you please post a mirrored circuit (bottom) image for the newest one layer AllInOne 74HC4851/MAX4558 design?
I will need it for the tone transfer method of pcb etching.
Electronics is my hobby - I try to prepare everything on my own.
I have gathered almost all parts and prepared the connectors. Now I have to make the megadrum pcb and wait for the delivery of remaining parts.
2) Could you please do not abandon the development of one layered design presented in this topic?
Personally I think that this design is better than your new AllInOne because it has less elements for easier soldering and those elements are easier to obtain. Also one layer is much better for people who have the possibility to make megadrum at home.