In SX Microcontrollers, SX/B Compiler and SX-Key Tool, tdg8934 wrote:

Thank for your comment.

However, after thinking about it a bit more, I was thinking of only adding backlight when a coin is dropped in which may only stay on for a few seconds at any one time. 

If I do stay with Battery useage, do I have to use 4xAA or even a 9v ? It looks like it will need 5v but not sure if the LCD could run on 3v (as I know the SX28 could). I know the 9v would provide much less current but would be easier to regulate to 5v with a 7805. I don't know if 6v can directly be used with the SX28 and LCD. 

Can someone confirm this?

Thanks.

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