PCB DESIGN - All In One v2.5 - 32 inputs with 74HC4851

[Synthex]

The v2.5 is the only choice I have, I guess, because it uses the same components more or less; am I right?

You can use v2.5 or dmitri design or buy a v3.1 kit

The ceramic 100, 220, 470 nF must be multilayer or it's just better?

It's just better, but it's the same.

The rated voltage 25V. If I have 50V is it better, worth, the same? Must I look for 25V?

You can use rated voltage from 10V to 9999V

May I still change the pot trimmer with a cap and a pair of resistor (as said synthex) because the firmware then provide its function, right?

Yes, you can.

[droig]

Try these. I think they are right, but someone may want to check me.

470nF (.47uF) Cap

47uF 25v Cap

10K Pot

Header

Thanks Jman!!

[jman 31]

Try these. I think they are right, but someone may want to check me.

470nF (.47uF) Cap

47uF 25v Cap

10K Pot

Header

Thanks Jman!!

No problem!

[JunRin]

Where is the inputs wiring diagram?

It's the same as v3.1 without the pin 2 (Hi-Hat hi-Imp.)

Hi Synthex,

Thanks, but i can't get where is the v3.1

I'm a little bit confused here (not little bit but..... very confused)

Here is my last questions >>(If I'm not confused anymore)

If I'm building this All In One V2.5 - 32 inputs:

1.) What is the firmware use?
2.) What is the Bootloader use?
3.) What are the crystals we used if i build this 32 inputs.
4.) Is the MCU programming method the same as Dmitri designed in the download section?
5.) If I program, i will use Software Pony for Atmega32 and WinPic for PIC ic's?
6.) Where is the component list on this All-In-One V2.5 >>Or i'm just refer on the above drawing?

Sorry for questions above, or if you have any inputs not on my questions above appreciate that

Last but not the list, what is your secret developed this Megadrum?
As what i noticed you are a member too in Edrum

P.S >>I'm now etching the pcb, hope it works.

Thanks

[hissigompen]

I'm going to (try to) build a v2.5 without USB and without the LCD contrast trimpot. This is the schematic after I removed the USB components and swapped the trimpot for resistors/cap (added components circled in red):


Does it look correct?

[mrdutx]

today i have finish making the pcb v2.5..
thank you for help me out..
thanks Syntax, Dmitri, Firelord, Jiman, and all of you guys...
thanks

[jman 31]

Nice man! That came out really clean! I wish I could get my boards to be that tight!

[mrdutx]

Nice man! That came out really clean! I wish I could get my boards to be that tight!

thanks jman..
with all your advise i made it..thanks a lot..my second try its better than my firs time..but the hole that i drill it's not very nice..

[jman 31]

Where is the inputs wiring diagram?

It's the same as v3.1 without the pin 2 (Hi-Hat hi-Imp.)

Hi Synthex,

Thanks, but i can't get where is the v3.1

I'm a little bit confused here (not little bit but..... very confused)

Here is my last questions >>(If I'm not confused anymore)

If I'm building this All In One V2.5 - 32 inputs:

1.) What is the firmware use?
2.) What is the Bootloader use?
3.) What are the crystals we used if i build this 32 inputs.
4.) Is the MCU programming method the same as Dmitri designed in the download section?
5.) If I program, i will use Software Pony for Atmega32 and WinPic for PIC ic's?
6.) Where is the component list on this All-In-One V2.5 >>Or i'm just refer on the above drawing?

Sorry for questions above, or if you have any inputs not on my questions above appreciate that

Last but not the list, what is your secret developed this Megadrum?
As what i noticed you are a member too in Edrum

P.S >>I'm now etching the pcb, hope it works.

Thanks

1. Use the FW found HERE
2. Use Bootloader found HERE
3. v 2.5 requires a 12 mhz and a 20 mhz crystal. The 20 mhz FW is what you will use with it.
4. See this page for programming the IC's
5. Components List for v2.5

[jman 31]

Nice man! That came out really clean! I wish I could get my boards to be that tight!

thanks jman..
with all your advise i made it..thanks a lot..my second try its better than my firs time..but the hole that i drill it's not very nice..

I looked it over, should work fine still. Not bad if it's your first attempt at making a PCB!