I envision a "knob" that when clicked/turned to the left will generate a momentary pulse for one button, and when clicked to the right will generate a pulse for a different button. For instance, when hooked up to a keyboard encoder, a left turn would bridge the connection needed to send a '-' signal, and when turned to the right, it would make the signal for a '+'.

Basically the same effect as one of those self resetting toggle switches that has a momentary in both directions, (On) - Off - (On)

Does anyone know if such a thing exists, and if so, where I might can find some?

Thanks in advance!!

npbosch wrote on Feb 23^rd, 2008 at 4:27pm:



Is this a swithch like an engine start Norbert ? It resets itself!

Yes , it is a rotary, It turns endlessly in either direction if you like. But there are all kind of rotaries from an elctronic point of view. The one I mentioned does what you asked. Most rotaries don't, in any case not without special hardware. The special hardware is needed for your input/output card to determine whether you turn cw or ccw.

--------------
edit
Now I understand your question better.
No, my link does NOT do wat you want. AFAIK what you describe does not exist.
My first building project was a cessna like panel, completely done with keyboardhacking. For the radiostack, I made a knob that moves a little lever behind the panel. It pushed again one microswitch when turned left and against another when turned right. Because of the spings in the microswitches the knob was cenetered when I let it loose.  As long as I hold the knob turned ccw the frequency decreased and viceversa.
Perhaps for your purpose a nice idea.
have a look here
http://home.wanadoo.nl/norbert.bosch/firstpanel.html

JSpahn wrote on Feb 25^th, 2008 at 8:16am:


There's a slick and professional looking piece of work!!!!!

Thanks.

best,

.................john

The rotary you mention in the post on the www.737ng.co.uk website does the same as the one I mentioned in the second post. The one from voti is a lot cheaper €1,20. Both are rotary encoders. The one I use (from Voti) share a common ground , thats why they have 3 pins.

What Hans Krohn made (I copied his design and have that too in my pit) is a rotary switch. By a selonoid the rotary is turned to a position without the intervention from the pilot.

Regards
Norbert