Imagine

SENIOR PROJECTWireless Weather Monitor

Final Presentation

• Project Team

– Dale McClure

– Dave McHugh

– Joe Russo

Project Results

• Project Schedule– On Time– On Budget– Minimal Setbacks– Team Motto

SCHEDULE

Project Components

Tx Rx

RF Components

• Laipac Tech Inc. - Holtec Semiconductor Agent

• Series LP 434@433.92MHz Components

Project Components

• Transmitter Section– Temperature Sensor – National Semi LM34– Humidity Sensor – Honeywell 3610– Motorola 68HC11 Microcontroller– Power Supply – 9V Alkaline cell– Voltage Regulation – MC7805 for 5 Volt Operation– Laipac Tx #TLP – 434 @ 433.92 MHz

Tx Section with Sensor Array

Temp Sensor

Humidity Sensor

Op-Amps

9V battery

Motorola CME11E9-EVBU

RF Transmitter

Tx Section with Case Enclosure

RS-232 Port

On-Off Switch

LED Power On Indicator

50 Ohm Collapsible

Antenna

Ventilation Holes for air Transfer

Humidity Sensor

• Honeywell 3610 Humidity sensor

• Linear output voltage vs % RH

• Given a 5v supply Voltage output is 0.8 – 3.9 volts

• Motorola MC3303 single supply op-amps

Temperature Sensor

• National Semiconductors LM34 Temperature sensor

• Linear +10.0 mV/°F scale factor

• Rated for full -50° to +300°F range

• Motorola MC3303 single supply op-amps

• Receiver Section– Laipac Rx #RLP – 434@433.92 MHz– Motorola 68HC11 Microcontroller– OPTREX LCD Screen– ACT 5x5 keypad – Power Supply – 9V Alkaline cell– Voltage Regulation – MC7805

for 5 Volt Operation

Project Components

Rx Section On-Off Switch

LED Power On Indicator

LCD display for Sensor Outputs

Keypad for choosing Sensor information and Future Options

Shock Resistant Enclosure

Rx SectionRS-232 Port

Keypad Driver

AC/DC Variable

Power Supply

Motorola CME11E9-EVBU

RF Receiver

U1

NET_2068HC11

U2

NET_2068HC11

LCD port

pin 1 pin 2pin 3 pin 4pin 5 pin 6pin 7 pin 8pin 9 pin 10

pin 11 pin 12pin 13 pin 14

U3

NET_14LCD

pin 1 pin 2pin 3 pin 4pin 5 pin 6pin 7 pin 8pin 9 pin 10pin 11 pin 12pin 13 pin 14

(Vss) (Vcc)(Vee) (RS)(R/W) (E)

(DB1)(DB0)(DB2) (DB3)(DB4) (DB5)

(DB6) (DB7)

68HC11 recevier

Bus PortU4

NET_208279

5V

VCC

DB0

DB1DB2DB3DB4DB5DB6DB7

(pin12)

(pin13)(pin14)(pin15)(pin16)(pin17)(pin18)(pin19)

DB0DB1DB2DB3DB4DB5DB6DB7

(pin7)

(pin5)(pin3)(pin2)(pin4)(pin6)(pin8)(pin10)

(pin1)GND (pin37)CNTL/STB(pin36)SHIFT

(pin33)+5V(pin15)/OE(pin25)/WR(pin26)/CS0(pin9)A0(pin40)/RESET(pin37)ECLK

To

8279

chip

U5A

7404N(pin9)RESET(pin10)/RD(pin11)/WR

(pin21)A0(pin22)/CS0(pin3)ECLK

From68HC11micro-controller

(pin40)Vcc

To keypad,inverter, andreciever

Receiver (continued)

U1

NET_8Keypad

From 8279IC chip

(pin38)RL0 pin1

(pin39)RL1(pin1)RL2(pin2)RL3

pin2pin3pin4

(pin32)SL0

(pin33)SL1(pin34)SL2(pin35)SL3

pin5pin6pin7pin8

U2A

7414N

U3

NET_8Receiver

U4

.1uF

From 68HC11microcontroller

(pin1)GND pin1PD0/RxD pin2

pin4(pin1)GND

Antenna

pin8pin7pin6pin5

(pin33)+5V

U5A

7414N

•Software Bugs Addressed

– Serial Connection for Tx and Rx

– Sensor Code Conversion

– Sensor Calibrations

– LCD Display

– Modulation Type

The Wireless Weather Monitor is Assembled in State of the Art Facilities by Highly Trained Personnel