KIT AVAILABLE !!! All In One PCB Kit to sell !!!

Discussions related to MegaDrum Hardware

Re: KIT AVAILABLE !!! All In One PCB Kit to sell !!!

Postby jodev » Wed Feb 20, 2008 9:08 pm

Hello,
I am interested!
I desire a complete kit; Say me how to make for the purchase (I am French my English is limited).
Thank you.

jodev
jodev
 
Posts: 28
Joined: Sun Nov 25, 2007 12:29 pm

Re: KIT AVAILABLE !!! All In One PCB Kit to sell !!!

Postby dcho » Wed Feb 20, 2008 11:07 pm

Just a note for the US buyers, but I just sent 55 euros to synthex and it was $83.14 over paypal. I can't wait to build it!

Major thanks to synthex!
dcho
 
Posts: 77
Joined: Sun Jan 20, 2008 8:11 am
Location: Chicagoland, IL, USA

Re: KIT AVAILABLE !!! All In One PCB Kit to sell !!!

Postby Cladinshadows » Fri Feb 22, 2008 3:32 pm

I have a question regarding the 40 pin connector.
Is the pinout the same as this one ?

http://pinouts.ru/connector/40_pin_IDC_male_connector.shtml


Thanks.
Cladinshadows
 
Posts: 18
Joined: Sun Feb 10, 2008 3:58 am

Re: KIT AVAILABLE !!! All In One PCB Kit to sell !!!

Postby Synthex » Fri Feb 22, 2008 5:21 pm

Cladinshadows wrote:I have a question regarding the 40 pin connector.
Is the pinout the same as this one ?
http://pinouts.ru/connector/40_pin_IDC_male_connector.shtml

No, It lacks a pin.
Synthex
 
Posts: 1471
Joined: Fri Oct 12, 2007 6:06 am
Location: France

Re: All In One PCB Kit !!

Postby dmitri » Sun Feb 24, 2008 1:47 pm

jerzy wrote:
Synthex wrote:
jerzy wrote:Looks like R1-R16 voltage divider circuit is also superfluous in this case.

No, these resistors are not superfluous.
They are not used for ESD protection.


Actually I can't figure any use for them except that 0.1V drop. But what for? MUX and µC are powered with the same +5V line. Nor HC4851 or ATmega docs doesn't mention any additional circuitry, so I deduced those resistors are unnecessary.

R1-R8 are for ESD protection when connecting/disconnecting Analogue board from Digital board. They're not needed if both Analogue and Digital board combined into one. R9-R16 are required to conform with less than 10k ADC external source impedance. Without them MegaDrum won't work.
dmitri
Site Admin
 
Posts: 8706
Joined: Fri Aug 03, 2007 8:05 pm

Re: KIT AVAILABLE !!! All In One PCB Kit to sell !!!

Postby Synthex » Sun Feb 24, 2008 10:56 pm

For those who have asked me a photo of the mounted kit :

All In One Synthex Final 003.jpg


And it works great ! :D

Synthex
You do not have the required permissions to view the files attached to this post.
Synthex
 
Posts: 1471
Joined: Fri Oct 12, 2007 6:06 am
Location: France

Re: All In One PCB Kit !!

Postby jerzy » Wed Feb 27, 2008 12:13 pm

dmitri wrote:R1-R8 are for ESD protection when connecting/disconnecting Analogue board from Digital board. They're not needed if both Analogue and Digital board combined into one. R9-R16 are required to conform with less than 10k ADC external source impedance. Without them MegaDrum won't work.


Do you think the ADC4-ADC7 inputs (on ATmega32 board) will be ever used?
jerzy
 
Posts: 34
Joined: Thu Feb 07, 2008 1:29 am

Re: All In One PCB Kit !!

Postby Synthex » Wed Feb 27, 2008 12:28 pm

jerzy wrote:Do you think the ADC4-ADC7 inputs (on ATmega32 board) will be ever used?

For a 48 or 64 inputs version ;)
Synthex
 
Posts: 1471
Joined: Fri Oct 12, 2007 6:06 am
Location: France

Re: KIT AVAILABLE !!! All In One PCB Kit to sell !!!

Postby zebedee398 » Wed Feb 27, 2008 6:16 pm

hey synthex, sorry ive been a bit slow, im trying to source payment for you now, hoping you still have a kit reserved for me???????
hope your well
zebedee398
 
Posts: 22
Joined: Tue Jan 29, 2008 1:40 pm

Re: KIT AVAILABLE !!! All In One PCB Kit to sell !!!

Postby Synthex » Wed Feb 27, 2008 6:23 pm

zebedee398 wrote:hey synthex, sorry ive been a bit slow, im trying to source payment for you now, hoping you still have a kit reserved for me???????
hope your well

Yes of course ;)
I still have some kits.
Synthex
 
Posts: 1471
Joined: Fri Oct 12, 2007 6:06 am
Location: France

PreviousNext

Return to MegaDrum Hardware

Who is online

Users browsing this forum: Bing [Bot], Google [Bot] and 119 guests