NP-41 Emulator (may be)

[Chris Chung]

(10-03-2015 11:15 PM)Zweb Wrote:  Happy to see that you have had it working. About the annoying LCD shadowing, I may help to determine if LCD itself is good by using my PCB. I'm currently in HK so I can start working on that before tomorrow. A little curiosity, if the charge pmup is not working, how did you get the voltage needed?

I was thinking about asking you to compare notes on the LCD, so just take your time on it and add a note here.
The MCU I am using can use 1) DVCC, 2) External Supply, and 3) Internal charge pump to drive the LCDs.

I cannot make 3) work yet as I don't have the right SMD capacitors so I am using 1) DVCC.
There are also many controls that I need to explore in driving the segment. I may need to build some kind of rig just to work on optimizing the LCD contrast. As the LCD is 6-MUX, the contrast will be lower than a static or 2/4 MUX. I just hope it will end up clearly readable w/ no ghosts.