On 10-4-2014 2:03, Padawan wrote:
Sounds like someone needs to make a "surge protector" cape for people
like us... I'd buy that. My current Zener diode monstrosity design
isn't particularly effective.
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With the current shortage and future price increase, it may be worth
investing in BeagleBone protection again ;-)
This 'surge protector' cape you mention already exists!
Shameless plug:
Have a look at the BeBoPr series of boards and the current BeBoPr++. The
analogue inputs are designed to handle shorts against a 12 Volt supply.
Besides the over voltage protection you also get an extra (better) ADC,
protected digital inputs, both TTL and high current outputs, a 12-24
Volt to 5 Volt step down converter, I2C level shifter, etc. Oh, and you
can also use it to control some stepper motors, e.g. to build a 3D
printer, or a laser cutter, or a router, or something I haven't thought
of yet. There's a picture and manual available for download via this
link: https://github.com/modmaker/BeBoPr-plus-plus.
-- Bas
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