R+C Termination

[Rio]

Hi,

 

short question to R+C Termination:

http://www.ucapps.de/midibox_seq/mbseq_v4_dout.pdf

 

This R+C Termination might be

required if you notice flickering LEDs

or randomly triggered button/encoder values

If you don’t have a 100 pF ready, you

could also try 220..330 Ohm resistors

w/o a capacitor in serial instead

 

So i don't have 100 pF (only 220pF instead) ready, but the hint confused me a bit. Should i now take a R 100Ohm + R 220Ohm in serial instead of R 100Ohm + C 100pf in serial?

 

Greets, rio.

Edited January 8, 2014 by Rio

[cosmosuave]

Not to thread jack but do I need the DOUT module to drive the LED's that populate the control surface from SMASH TV? Hope not or that means i have to order one or make one on perf board...

[NorthernLightX]

Hi,

 

short question to R+C Termination:

http://www.ucapps.de/midibox_seq/mbseq_v4_dout.pdf

 

 

So i don't have 100 pF (only 220pF instead) ready, but the hint confused me a bit. Should i now take a R 100Ohm + R 220Ohm in serial instead of R 100Ohm + C 100pf in serial?

 

Greets, rio.

 

Disclaimer: I have not built an MBSEQ.

 

The way I read it is you either connect a 100 Ohm resistor and a 100pF capacitor in series, or just a 220 or 330 Ohm resistor without a capacitor if you do not have the capacitors on stock. If you do this you need to do this both on the SC and RC lines, but only if you have flickering LEDs and/or random trigger events.

 

So, first finish your build, then look for flickering LEDs and/or random events, and if you suffer from them then apply this potential fix.

 

 

Not to thread jack but do I need the DOUT module to drive the LED's that populate the control surface from SMASH TV? Hope not or that means i have to order one or make one on perf board...

 

I looked briefly at the CS PCB PDF and saw shift register ICs on the board, so I am convinced that you do not need additional DIN and DOUT boards to make this work in the standard configuration. You can look here for more details: http://www.ucapps.de/midibox_seq_manual_hw.html

[cosmosuave]

Thanks and your right I do not need those modules... I find I get overwhelmed by the amount of info on this site...