Brightness and contrast with 2 GLCDs

[cimo]

3rd new topic i start today.. i am waiting for S1 to knock at my door...

anyway, i have a doubt about brightness and contrast with 2 GLCDs running on the same core:

-i assume that i can use the same pot/trimmer to control the brightness, the 2 GLCDs are the same type so it shouldn t be a problem

-about the contrast i have come to the following conclusions:

A- i can use a stereo pot to control the bias voltage for each GLCD

B- i can mix in parallel the two Vee outputs of the GLCD and use a single pot to send it back to the GLCDs Vo (sounds dangerous)

C- i can use one single Vee and one single pot to drive both the GLCDs Vo (that may overload the internal converter)

so choice A seems to be the best one.

Anyway it s not so easy to find stereo pots pcb mount 10k linear etc etc, especially with a nice and thin shaft like ;

RS electronics: RS Stock no.  263-2980 but they are not dual pots

Conrad has these ones:

http://www1.int.conrad.com/scripts/wgate/zcop_in/~flN0YXRlPTQwNDMxNDE2NDk=?~template=PCAT_AREA_S_BROWSE&glb_user_js=Y&shop=A_B2C_IN&p_init_ipc=X&~cookies=1

but i can t really understand if they will fit just a normal trimmer, does anybody know the trimmer type they are meant to?

txx

Simone