This design resulted from the need for a replacement of the drop sensor in an old vending machine which is no longer in production and therefore hardly obtainable. The replacement is a homemade module ...

In the water level sensor schematic, the common probes connecting the underground tank and the overhead tank to +9V supply are marked ‘C’. The other probe in underground tank, which is slightly above ...

Brown University. "New Sensor Bares Faults In Smallest Possible, Most Advanced Circuits." ScienceDaily. ScienceDaily, 12 May 2003. <www.sciencedaily.com / releases / 2003 / 05 / 030512074130.htm>.

Although this circuit connects the DS18S20 1-Wire temperature sensor to a Cypress CY8C26443 PSoC microcontroller, designers can easily adapt it to connect other 1-Wire devices to any microprocessor.