D3 connection for CAN interface

[frailn]

I'm ready to start connecting my LCD (2x40) to CORE for my first project and have been studying the mbhp_lcd_4bit.pdf and the docuwiki and searching around the forum to make sure I've got everything in my head before starting.

The one thing I would like help on is connecting the 1k resistor from D3 to +5v. How are you guys doing this? Are you soldering one side of the resistor to D3, then running a jumper wire to anywhere on the CORE that has +5V from the other end of the resistor? I was thinking of jumping it over to the + side of C5, since I left that capacitor out of my CORE. Is there a better way of doing this?

I understand what to do with D0, D1 and D2, but D3 has me stumped.

[Narwhal]

The Vd (+5v) pin is right nearby.. perhaps that might be a good location.

[frailn]

Yeah, that makes sense. Thanks for the suggestion! I was focusing on the Core connections other than the LCD and didn't take that into account. Sometimes you can't see the trees because of the forest...

[Narwhal]

It just occurred to me that if you aren't making use of the CAN interface, I don't think you have to worry about the pull up resistor.  You could always give it a test without it.

[frailn]

Just found this on ucapps.de

It is possible to control up to 3 additional synths from the same frontpanel. The first core, which also manages the control surface, will act as a "master", and the remaining cores are handled as "slaves". Communication is realized over a fast CAN interface, this approach is called MBNet.

So, I don't think I'll be using CAN. I'll leave that connection out and test it.

I added CAN Interface to the WIKI - MIDIbox acronym page.

[stryd_one]

If you search more, you'll also find the doco that says you should install the parts even if you don't use CAN.

[nILS]

As striddie said, do install the parts no matter if you use the CAN interface or not. Make sure to disconnect D0-D3 or it might fry your LCD. Just get a good look at the board layout and trace the D3 pin - you can hook up the resistor anywhere on that track. Just pick a location that's close to any +5V pin and you're good to go.