DIN soldering/wiring buttons/enc help needed

MIDIbox SID
1

:slight_smile: Hello to all,

Finally i’m starting to build my MIDIbox SID Control Surface ver.

I’m getting troubles on understanding the DIN soldering and wiring work.

On DIN pagehttp://ucapps.de/mbhp_din.html we could read on ‘Used Components’ chapter that:

These pull-up resistors are required if buttons are connected to the digital inputs.

(talking about the 10k resistors).

Does it mean i don’t have to put resistors where i’ll connect the encoders on DINx4 boards?

Into the connection diagram http://ucapps.de/midibox_sid_cs/mbsid_din_default.pdf i couldn’t see where resistors are and where aren’t… instead of http://ucapps.de/midibox_sid_cs/mbsid_dout_default.pdf diagram which has resistors drawned.

Again on http://ucapps.de/midibox_sid_cs/mbsid_din_default.pdf: the last board on right side is a DIN, does it have only one 74HC165 shift register? ???

If so, what i have to do with the others three 74HC165s banks? (i have only DINx4 boards)

I must put bridges or resistors(which?) between each last 3 shift registers’ pinouts?  ???

Just a comment: on diagrams .pdfs couldn’t be usefull a legend that clarify which symbols mean buttons, which mean encoders, etc.??

I hope to be understandable :slight_smile: Thanks all of you ppl out there

Gord The Rogue

2

Hi,

the pull-up resistors are also required for rotary encoders.

For the last DINX4 module, you don’t need to stuff the unused 74HC165, so long R33 is connected

Best Regards, Thorsten.

3

:smiley: Thanks for the quick answer!!

Talking about last DINx4, i understood to don’t stuff 3 shift registers but:

1)Have I to stuff one shift register and near R1 to R8 resistors, included R33 right?

2)What about others resistors (R9 to R32)? Do i have to stuff them? Also R34 to R36?

Thank you again :-)  Gord the Rogue

4

To 1) yes, to 2) you don’t need to stuff them for the “DINX1 functionality” (compare with the mbhp_dinx1 schematic)

Best Regards, Thorsten.