Remote Resistor Values

[wurzil]

Hi

I am looking for special Resistor values for the remotes of HI-MD devices. I found a couple of values on the minidisc.org page, but i hope that there are more:

I have a old remote from a vaio Notebook with the basic functions of Play, stop, << and >> ( here play and >> is the same button). I plugged this remote in my MZ NH 700 and found out, that the Playbutton is interpreted as an activation(/deacitvation) of the soundsheme (simlple equalizer on/off).

Now i am curious if there are some other hidden functions witch can be accessed by other resistance values.

My plans are to built a Interface with bigger buttons for the use at home, and in that case it would be quite useful to deactivate the equalizer, activate full volume.....

Below, you can find some values I mesured ( doubt that they are superexact, but it is a beginning.

notebook remote control (this remote was shipped with a old vaio notebook)

play >> 2.53k --> Sound change (NH 700)

stop 7.59k

<< 1.01k

Remote shipped with the MZ NH 700

play-pause 333

stopp 7k14

>> 1k018

<< 3k68

Group+ 11k92

Group- 5k19

Vol- 8k44

VOL+ 9k93

These values are mesured, so there might be a slight variation to the real values

Resistor values I found on some tables on Minidisc.org

Mode 14000

Display 17000

Record 19500

Test Mode 24000

Prev/Back 1000

Next/Forward 3627

Pause 5156

Stop 7050

Volume - 8400

Volume + 9900

Track Mark 11900

Thanks for your help,

wurzil

PS: if I missed some information about that topic please let me know.

[SlowMo]

Now i am curious if there are some other hidden functions witch can be accessed by other resistance values.

My plans are to built  a Interface with bigger buttons  for the use at home, and in that case it would be quite useful to deactivate the equalizer, activate full volume.....

Hey, that´s a pretty cool idea, i´ll consider building such a device, should be really fun..

though i got nothing constructive to contribute, (yet) only questions/suggestions:

if you were "wild" you could simply solder a switch and a poti in line, plug it in, and try around with multiple values.

and.. ...did sony use standard controllers on their remote´s displays ? - i doubt it, but if they did, it would be possible to add a display to the controllerbox quite easily

i´m gonna measure out my rm-mc33l, will be nothing new, but proving your values..

[wurzil]

Hi,

so, then i made some last tryings with some remotes:

from my old MZ-R 30 : The remote RM-MZR30MP

and from MZ NH 700 : The remote RM-MC21

I mesured the resistances (with a non-exact Multimeter)

and surprisingly the same functions have roughly the same Values.

BUT thy are creating diffent fuctions on the NH700.

that will say, that my multimeter is not sufficiant exact (how without a sufficiant amount of digits :-)

I also tried your suggestion with the poti and the switch and it works. unfortunately i have only a poti with values up to 20K but it ist also not exact enough (and it is pretty hard to trim exact) and with the messuring error there are already two causes for uncertanties.

The most functions I detected were VOL+/- and >>/<< in various Intervalls of resistors.

So, for the moment, i have no clue how to proceed but i will buy some more exact Resistors so that at least i can try furthermore.

Sofar, thanks for further help,

wurzil

[Christopher]

Some helpful links:

http://www.esrac.ele.tue.nl/~leon/minidisc/remote/

http://home.student.utwente.nl/r.reilink/p.../sonyremote.pdf

http://www.mironics.com/ProductDetails/DIYHardwareInfo.asp

..and there's more at google. Try the search string

minidisc remote resistor