MotorMind
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Posts: 46,084
Anyone using these things? I thought they would be good to use until I could
build a dual motor controller, but when I got one and read the documentation
I found out their 2 amp continuous rating was with a fan. Talk about
misleading advertising.
build a dual motor controller, but when I got one and read the documentation
I found out their 2 amp continuous rating was with a fan. Talk about
misleading advertising.
Comments
The motor mind module only gets mildly warm and no air from the fan can flow
over the heatsink.
If you feel froggy you can pop it into the freezer for 1 minute, pop the
original heat sink off, and put a bigger one on with thermally-better epoxy.
the heat sink on my motor mind was a fraction of a cm higher on one side
when I got it, and it had a good 1mm+ of epoxy between the chip and the
heatsink. Not very good for thermal transfer, but I guess it works.
Robert Staph, KB3FXS
Original Message
From: "Rodent" <daweasel@s...>
To: <basicstamps@yahoogroups.com>
Sent: Thursday, March 01, 2001 8:49 PM
Subject: [noparse][[/noparse]basicstamps] MotorMind
> Anyone using these things? I thought they would be good to use until I
could
> build a dual motor controller, but when I got one and read the
documentation
> I found out their 2 amp continuous rating was with a fan. Talk about
> misleading advertising.
>
>
>
>
>
> Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
>
>
>
when we get our motor control boards built. Unfortunately I have not tested
the stall current on my drive motors yet.
We scammed a schematic for a gel-cell charger if anyone is interested --
seems to work OK but uses a $7 chip.
Original Message
> I use one of these to drive a fan, its .6amps
>
> The motor mind module only gets mildly warm and no air from the fan can
flow
> over the heatsink.
>
> If you feel froggy you can pop it into the freezer for 1 minute, pop the
> original heat sink off, and put a bigger one on with thermally-better
epoxy.
> the heat sink on my motor mind was a fraction of a cm higher on one side
> when I got it, and it had a good 1mm+ of epoxy between the chip and the
> heatsink. Not very good for thermal transfer, but I guess it works.
>
> Robert Staph, KB3FXS
> > Anyone using these things? I thought they would be good to use until I
> could
> > build a dual motor controller, but when I got one and read the
> documentation
> > I found out their 2 amp continuous rating was with a fan. Talk about
> > misleading advertising.