msp430 project justin king oz serpersu nadiah khalid tim dew
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MSP430 ProjectMSP430 Project
Justin KingJustin KingOz SerpersuOz Serpersu
Nadiah KhalidNadiah KhalidTim DewTim Dew
The boardThe board
Temperature SensorTemperature Sensor
AD22103AD22103 Temperature Temperature
rangesranges 0-1000-100oo C C
Two design stylesTwo design styles 3 pin 3 pin 8 pin chip 8 pin chip
www.analog.comwww.analog.com
Pin LayoutPin Layout
Pin 1Pin 1 Recommended 3.3 VRecommended 3.3 VSS
Used 2.8 V from Used 2.8 V from boardboard
Pin 2Pin 2 VVOO – voltage output – voltage output Used to calculate Used to calculate
temperaturetemperature Pin 3Pin 3
Ground - 0 VGround - 0 V
Board #2Board #2
PC boardPC board Transistor AdapterTransistor Adapter
ESD protectionESD protection Temperature Temperature
protection from protection from soldering ironsoldering iron
ProgrammingProgramming
VVoutout = .25V + 28mv/ = .25V + 28mv/ooC x TC x T sample = ADC12MEM6;sample = ADC12MEM6;
Reads VReads VOO from sensor from sensor sample = 47.143*sample - 892.2;sample = 47.143*sample - 892.2;
Conversion from V to temperature (C) Conversion from V to temperature (C) sample = (sample*9./5)+3200;sample = (sample*9./5)+3200;
Conversion from C to FConversion from C to F lcd_word(sample,2);lcd_word(sample,2); lcd_char(0,’F’);lcd_char(0,’F’);
DisplayDisplay
Results ErrorsResults Errors
Approximate 10% Approximate 10% deviation deviation
Ex. Actual : 73Ex. Actual : 73oo Measured : 66.9Measured : 66.9oo
Responds to Responds to different different environment environment temperaturestemperatures
Connection of Connection of boards using boards using alligator clipsalligator clips
Voltage source Voltage source varied from 3.3 varied from 3.3 recommendedrecommended