Disc Golf Disc Locator
Post on 23-Feb-2016
59 Views
Preview:
DESCRIPTION
Transcript
Disc Golf Disc LocatorTrevor HenryProject Advisor: John Spinelli
What is Disc Golf and Why this project?
What is Disc Golf? Outdoor sport played much like the game of golf Object is to throw the disc into the chain basket
in as few throws as possible
Why this Project? Save Money Save Time
Goals of the Project:
Handheld device Battery powered Visual information to tell distance and direction Easy to use
Disc with a Chip Transmits signal using battery power Has negligible interference with flight Transmitter + Disc < 200 grams (max weight
rule)
Disc Used: Innova Star Gator Mid-Range DiscDiameter = 21.2 cmWing width = 1.3 cmRim depth = 1.4 cmWeight = 172.2 grams
Design Process: Adding Weight Experiment
Quarters added to Disc
Avg. Distance (5 throws)
0 153 feet1 155 feet2 158 feet3 163 feet4 168 feet5 170 feet
1 Quarter = 5.6 grams
Conclusion: About 28 grams can be added to disc
Design Process: Choosing Wireless System
RFID (Radio Frequency Identification) Passive or Active
Active Transmitter Phased Array Directional Antenna
What I chose:Active Transmitter & Directional Antenna
Diagram of Project:
What I chose: TransmitterRF Link Transmitter 434 MHz
Amplitude Shift Keying Range 500 ft. (perfect conditions) Supply Voltage: 3V – 12 V Weight: < 1 Quarter Height: < 1 inch Width: < .5 inch
What I chose: ReceiverRF Link Receiver 434 MHz
Amplitude Shift Keying Range 500 ft. (perfect conditions) Supply Voltage: 5V Height: < 2 cm Width: < 2 inches
First Step: Communication of Transmitter and Receiver
Using the data sheets of the chips, the chips were set up and powered on a breadboard
Tried a non wave signal for input data on transmitter
This did not yield an output on the receiver
Used a 2V peak to peak square wave signal with 1V DC offset
Yielded a readable output
Experiment 2: Communication Distance
Distance Apart No AntennaOutput Readings
AntennaeOutput Readings
About 5 ft. Min: 1.5VMax: 3V
Min: 250mVMax:4.2V
About 20 ft. Min: 1VMax: 3V
Min: 300mVMax: 4V
About 70 ft. Min: 1.94VMax: 2.6V
Min: 780mVMax: 4V
Used oscilloscopes and wave generators between rooms N106 & N100
Experiment 2: Communication Distance
Ongoing Tasks: Attaching Components to Disc3V Button Cell to power transmitterPush button switch to make transmitter activeUse a 555 timer or develop a square wave
generator to input data Develop a casing such that components won’t
be harmed when the disc is thrown
Ongoing Tasks: Handheld Device Attach a switch to turn on and off the deviceDevelop a directional antennaConnect antenna to receiverUse a 5v battery sourceAttach a voltmeter to receiver output so that
the user can determine distance to disc
What I learned:Read data sheets carefullyHow to set up voltage sources correctlyTime is deceiving
AcknowledgementsAdvisor: Professor John SpinelliLab Manager: Gene Davison
Questions?
top related