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Sensor Interface "Micro-Pac" Sensor Unit

Lloyd Lee Boonsboro, Maryland email: dale@fred.net

Sensor Interface "Micro-Pac" Sensor Unit
Author:
Lloyd Lee Boonsboro, Maryland email: dale@fred.net
APPLICATION OPERATION
Care was taken to choose transducers that required a minimum of support components and also parts that directly handle temperature and voltage compensation that would normally require additional components or programming to correct.
Microchip Technology Incorporated, has been granted a nonexclusive, worldwide license to reproduce, publish and distribute all submitted materials, in either original or edited form. The author has affirmed that this work is an original, unpublished work and that he / she owns all rights to such work. All property rights, such as patents, copyrights and trademarks remain with author.
Sensor Interface
Block Diagram:
Display
Temperature
Pressure
Light Level
Humidity
Flow Chart:
Initialize System & Variables
Read Temperature Chip
Read Humidity Frequency
Read Pressure Voltage
Read Light Frequency
Display Stored Values on 2x16 LCD
Sensor Interface
Graphical Hardware Representation:
+5 NJM78L05A IN COM 7 +9V +5 VREF 1 8 6 4 7 Signal 0.4 - 4.9V 50µF 4 51K 3 Motorola Barometric Pressure 2 MPX54100A +5 OUT +5V 2 x 16 Serial LCD Module Scott Edwards Electronics
PIC12C672
100 fo (divide by)
Sensor Interface
NOTES: