Sourcing components

Helder · Post by **Helder** » Tue Jun 24, 2014 5:00 pm

Chris could you post some places you sourced your components? I mainly need the connectors and sockets but would appreciate a list of all parts sourced. Thanks.

prophet36 · Post by **prophet36** » Tue Jun 24, 2014 5:06 pm

Hi Helder,

Each PCB in GitHub has a "NOTES.txt" file containing a BoM with suggested sources:

https://github.com/makestuff/lx9/blob/r3/NOTES.txt

https://github.com/makestuff/umdkv2-lx9 ... /NOTES.txt

Chris

Helder · Post by **Helder** » Tue Jun 24, 2014 9:41 pm

Thanks, I must have missed that. I just saw the list of components needed that was posted along with the gerber files.

Edit: what values do you recommend for these:

R11
R7-8
C30

prophet36 · Post by **prophet36** » Wed Jun 25, 2014 12:22 pm

Actually I only wrote the bridge-board BoM a day or so ago, and I only added the links to the intro post yesterday, so you didn't miss it 'cos it wasn't there.

In the lx9/r3 NOTES.txt it says to leave R7, R8 and C30 unpopulated unless you know what you're doing.

R11 is the series resistor for the transistor on the bridge board which drives DTACK. Since I have not tried driving DTACK, I recommend not populating the transistor (see umdkv2-lx9/v1 NOTES.txt). Therefore it doesn't matter what you do with it. On my cart it's unpopulated.

If we want to use the cart with a Mega-CD, someone will have to work out DTACK and address-space details to avoid clashing with the Mega-CD.