Question for SmashTV about Core board version.

[docbrown]

SmashTV,

What version of the core module kit that you are currently shipping?

thanks in advance..

docbrown..

[stryd_one]

The latest. I think it's R4C?

[smashtv]

Stryd is right, R4C is the current one.  :)

Best

Smash

[docbrown]

Sorry for dumb question. RC4???,, would that be the version 3? As discribed on http://www.ucapps.de/mbhp_core.html.

thanks.. docbrown..

[stryd_one]

Not Version 3, But Revision 4 C. Smash's is different to that one (The onboard MIDI ports are the giveaway)

Check out http://www.avishowtech.com/mbhp/mbhp_coreR4c.html for R4C

Here is the doco for V3: http://www.avishowtech.com/mbhp/mbhp_coreR3.html

[smashtv]

Here is the doco for V3: http://www.avishowtech.com/mbhp/mbhp_coreR3.html

whoop actually that is info for my R3 Core PCB, also different from the Core V3 layout on ucapps.  I moved from "V"ersion to "R"evision version numbering to help keep things clear......Official ucapps layouts are usually V and mine are R.

Why/what are the differences?

R2 improved on trace spacing and placement, and reduce wire jumpers.  Such changes were also needed to facilitate pro fabrication. 

R3 brought the needed changes for MIOS 1.7, and the removal of the no longer needed (and often newbie puzzling) ISP header and jumpers.

R4C is the the result of two things: Builder input/feedback and pricing for single-sided PCB fab rising to almost match that of double-sided fab.  I saw a chance to eliminate a lot of build time, wiring errors, and expense by adding DIL header pads to everything, while leaving the SIL pinouts intact, for full backward compatibility (and preservation of TK's existing schematics/documentation/testing procedures).

The end result: much less build time required, less expense on connectors to tie everything together.

The on-board MIDI jacks address one of the most common build errors, incorrect polarity....an easy error to make. ;)

In another thread I talked about the R4 (no "C"), where I did a fab run with DIN/DOUT connections swapped.  Those were not shipped, with the exception of 6 boards, going to people who specifically wanted them (they work fine, but did not allow for 1:1 wiring on a DIN/DOUT chain).

Now with a couple hundred R4Cs in the wild, the feedback has been -almost- completely positive with a few people complaining about the LCD connection pinout.  While it would be very cool to simply 1:1 the LCD, it's still a roll of the dice as to whether the one (out of several) "standard" pinouts I use would match your chosen display....so that was left alone in the interest of back compatibility/existing docs.

Any questions on the differences?

Best

Smash

[docbrown]

Thanks SmashTV. Sounds good..