zebedeu's questions

[zebedeu]

hello dmitri
what happens is that the symbol in the scheme of the diode is in a position
and the polarity writing (in green) does not match the diode symbol!

[dmitri]

Didn't even know there were any letters by diodes' pins. Forget about them and do as the diode symbol in the schematic show.

[zebedeu]

hehe ok
I will follow the symbol of the diode!
tks

[zebedeu]

hello people
I started programming my megadrum.
But I'm doing it with two 4851 (there is a problem?)
I did the configuration of the PIC and the program gave error ... but the Win 7 installed and recognized the driver megadrum.

But nothing appears on the LCD (the top line is black and the down line turns off)
and when I try to install the firmware is still at 0%
what can be??

tks

[dmitri]

Did you read "MegaDrum FAQ. Read it before posting in this forum!" ? Btw, I send Atmega chips with a latest MegaDrum firmware already loaded.

[zebedeu]

Already programmed the Atmega?
I think I managed to install the PIC18f2550 on Win 7
he already recognizes the Megadrum as controller audio, video and game

I tested the voltage on pins 1 and 2 LCD and gave 5.22 v

that my attempt to program the ATMEGA can be desprogrammed what you had planned?

Can I test my Megadrum using only two 74hc4851?

[dmitri]

Already programmed the Atmega?

How many times do you need to see an answer before believing it? Yes, it is programmed already.

that my attempt to program the ATMEGA can be desprogrammed what you had planned?

No. But mistakes on the board may kill any of the components, including Atmega.

Can I test my Megadrum using only two 74hc4851?

I think you already had this question answered in http://www.megadrum.info/forums/viewtop ... 600#p20600

someone tell me what happens if I turn on my MegaDrum
missing a 4851 (ie 6 instead of 7)?
I want to test!!

It will start an irreversible chain reaction that will blow away the Earth's magnetic field, leaving us at the mercy of solar winds that will burn us all to a cinder...

Just joking... go ahead, it'll be fine.

[zebedeu]

someone
I connect my Megadrum.
My computer recognizes it as USB controller
MDM when I open it asks me to configure the ports Midi In / Out.

In midi IN I put Midi USB MIDI Drum
In midi Out put Microsoft MIDI Mapper


Firmware appears to see "?????????"
what is happening?

[dmitri]

what is happening?

Your board has mistakes/errors/problems.

[zebedeu]

I gave up trying to get my board with 56 inputs!
so I decided to build the version with 32 inputs!
I can also utilize the Atmega 644 I bought from Dmitri?
or I have to use another?
tks