Does any one know hove to use this?

[joke]

Hi I was loking for some pots or something for a volume control ,24 rotari swich...whell I found this but dont know how to use it , could it be used as a volume contol ...what do I nead to use it as such ???

A high quality magnetic encoder complete with 31 position orange LED indicator and is particulary suitable for high-end digital audio applications.
• Complete with SPST push switch
• PCB mounting
• High reliability and long life
• Metal shaft with flat

Thanks
Josip

[uli]

you will have to implement a microcontroler to translate
the encoded data to volume steps (relais or DaC)

Uli

[joke]

sounds to complicated for me ... I was hopeing that I could put some resistors and that it will act as a rotary swich...does any one have some shematic so I can use it with this...
Whell I think I will go back to design PCB for relay controlled volume trad , and see if I can find something there

Thanks any way
Josip

[uli]

normally such devices output 2 square waves with 90°
phase difference. out of this difference the µC knows
the direction and counts up or down. It makes only sense
if you use a µC for managing all the functions of your pre:
LCD-Display, input switching remote control etc.

I once tried to hack the C-code for some kind of 8051 but
its too time consuming just for 1 pre.

Uli

[guido]

This one seems to have more pins.. So output is parallel.
If it are swithes you might be able to use them. But even if they are, the quality is probably not suited for serious audio.

Could also be that the output is some kind of gray code (code where only one bit changes from one position to the next). Seems more likely to me. Then this can be read with a micro, etc.. Like the cheap bourns encoders.

See my webpage (below) for some of that.

Greetings,

Guido

[uli]

Hi Guido,

I got such a device per accident.
Those pins are for driving the LEDs.

I believe it´s Gray Code.

Uli

[Jakeh]

If it is not gray code, but a simple up/down encoder then http://www.usdigital.com/products/ls7083-84/ will do the trick. I don't understand why everyone leaps immediately to microcontrollers, fine if you want the bells and whistles, but way complicated and over the top if you simply want to control a few relays with an encoder.

Jake

[Mark A. Gulbrandsen]

Ok, so who makes that cool thingy with the LED's? I want to get a couple of them!!
Mark

[joke]

Ok, so who makes that cool thingy with the LED's? I want to get a couple of them!!

Sorry ... This is made by ALPS ... I found it on http://rswww.com under pots and trims... It's not chep...

[Mark A. Gulbrandsen]

Thanks Joke!
Mark