On 1:59 PM, Ian Hooper wrote:
> Hi all,
>
> Here's something which may be of interest to people still stuck using
> 0-5Kohm resistive potboxes!
>
> For some conversions we're doing at EV Works, we chose controllers
> which (unfortunately) only support resistive throttle inputs, but we
> wanted to use the factory hall effect accelerator pedal to drive them.
> So here's some information about a device I designed to interface the
> two, based around a digital potentiometer:
>
> http://www.evworks.com.au/tech/DigitalPotAdapter/
>
> There's also a download link at the end for the schematic/PCB files
> and AVR project for the microcontroller code.
There is a pin-compatible 5K version:
http://ww1.microchip.com/downloads/en/DeviceDoc/22060b.pdf
In case that matters.
... Also do be careful, they aren't exact replacements for a physical
pot. When I was
looking for one for LCD contrast control, I soon discovered they don't
like signals
outside of their supply voltage (found one exception, it took a single
+5V supply and
it could handle -5V to +5V on the pot pins).
--
Zachary Heilig (
[email protected])
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