I have completed LCDPS Dual Power Supply, TOSHLINK Optical Input Modul kit, S/PDIF Transceiver Module-V2, OPUS DAC kit-V2.1 and VOLUMITE volume control (firmware for Opus DAC (Stereo WM8741))and everything is working fine from the first try except Volumite control. I connected it to the OPUS and regardless of potentiometer position it does not regulete volume at all. Adjusting the pot has no effect. The volume is always at maximum.
I wired this way;
Volumite to LCDPS connections are:
Volumite VCC -> LCDPS + (7,5V)
Volumite GND -> LCDPS GND

Volumite to OPUS connections are:
Volumite SDA -> Opus SDIN
Volumite SCL -> Opus SCK
Volumite GND -> Opus G
Volumite PB3 -> Volumite GND (no effect)
Volumite PB1 ¬-> Volumite GND (no effect)

On the Opus, I set all switches to open (center position) except for I2S, which is set to - ,
any configuration of all switches gives no result – volume is always at maximum.

I checked the connections on Volumite with ohmmeter and found no problem. The voltage across VCC and GND of A08-LCxxxx is 3.3V.
Where is The Problem? What should I try next, need HELP, please!
THX.

I tried but it is the same, the volume is at maximum. Any other idea? Thx.