Re: [Distillers] level detector with paralell port
- On Fri, Oct 28, 2005 at 12:25:57PM -0000, random9988 wrote:
> Just want to mention that it's easy to build a level guard with theif you do anything like this, please a simple one-transistor amplifier
> help of a parallel port. Use one data pin and one ground from the
> port, It detects closed and open on the computer. Be aware though that
> it works like electrolytis so it'll corrode one of the sensor pins.
> Can be useful for.. well I don't know.
stage and a high-ohm resistor to make sure only very little current is
actually flowing. this makes sure you have no corrosion problems, don't
damage your port and makes it more sensitive should the liquid be a bad
conductor (like distilled water is)
Robert Lemmen http://www.semistable.com