Re: [GrizHFMinimill] Re: igaging scale batteries keep dying

On Mon, 9 Jan 2012 09:18:07 -0600, you wrote:

>I have the same problem with batteries dying - I have taken to removing them
>after use. I also found that the batteries that supposedly died still
>worked when I put them back into the units. I have not tried any other
>batteries except the ones that came with the units. Perhaps the original
>equipment batteries are poor quality. The units still use some current when
>shut off otherwise the axis settings would be lost when you shut down the
>machine when the wife calls you for dinner.
>
>
>
>I have considered modifying the units to be run off of a wall wart but have
>not had the courage to take a soldering iron to the units. I assume that a 6
>volt transformer would do the trick. Anyone tried this?


A 6 volt transformer is AC, not DC, and 4 times the battery voltage
needed (at least).

You want a regulated 1.5 volt supply which may be made from an LM317,
two resistors, and a bulk DC supply, where a 6 volt DC supply ought to
be fine.

Harvey

>
>
>
>AJ

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