Toorbough ULL-Zeveigh wrote:do u feel it wud b worth the effort replacing the op-amps with ultra lo-power versions?
fechter wrote:With the jumper installed between D4 and D5, the current draw when powered is around 20ma @32v.
If I lift the pack (-) and run 28v from cell 1 to cell 8, I now measure right around 500uA. This is not too bad.
fechter wrote:I think I would be OK with that amount of drain. For extended storage, I would still recommend disconnecting the whole thing.
fechter wrote:Toorbough ULL-Zeveigh wrote:do u feel it wud b worth the effort replacing the op-amps with ultra lo-power versions?
I suspect it wouldn't help that much.
I also tried out the sleep mode. It is essentially useless. 20ma on, 13ma sleep. I'm not sure exactly what is sleeping, but I do see the backlight turn off and the display goes blank. Looks like everything else is still powered up.
fechter wrote:Here's a link to the datasheet for the MCU:
Interesting the Atmel web site states this product is not recommeded for new designs (mature).
From the datasheet, I can see how to hook up my SPI.
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