I just built this DVA.
Only 3 internal parts, schematics available here and other places on the web, costs less than $15 to make. Mostly ratshack components.
Ratshack digi multi meter $29. I think an analog meter is better, you can watch the needle sweep rather than numbers jumping around.
heres a very simple to understand schematic,
http://forums.iboats.com/showthread.php?t=291324&highlight=DVA
Only 3 internal parts, schematics available here and other places on the web, costs less than $15 to make. Mostly ratshack components.
Ratshack digi multi meter $29. I think an analog meter is better, you can watch the needle sweep rather than numbers jumping around.
heres a very simple to understand schematic,
http://forums.iboats.com/showthread.php?t=291324&highlight=DVA
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