Describes details for constructing a 1-Wire Barometer which will work on a Dallas Semiconductor Corporation 1-Wire network.
The circuit requires an additional power source other than that of the 1-Wire network. The MPX4115 requires about 7 ma of current. This is more than a 1-Wire network can provide without an elaborate circuit to store parasitic power from the 1-Wire network for short burst of current for pressure measurements. Two voltage regulators are used to provide both 5.0 and 10.0 voltages from a source of DC power ranging from 12 to 20 volts.
By David W. Bray of http://davidbray.org/onewire/
Authored by
David W. Bray at
Home Page, Added: Jan 16, 2006
http://davidbray.org/onewire/baro2030.html
