PowerPoint Presentation

Sponsored by Kim Sash &The Tall Timbers Research Station and Land ConservancyIn partnership withDr. Gupta, Dr. Shih, Dr. Clark, Dr. Harvey, Dr. Frank &The FAMU-FSU College of Engineering Presented by Jane Bartley, ME (team leader) Bridget Leen, ME Colin Riley, Lead EE

Also featuring Jordan Muntain, ME Lester Nandati, Lead ME Sina Sharifi-Raini, EE

The Gopher Tortoise Scope12Background and objectivesSubsystem breakdownSpecificationsIntegrationPrototypesProject managementBudget overviewWork to be completed

Presented by Jane BartleyOverviewTeam 213Tall Timbers research focuses on fire dependent ecosystemsOne species they study is the gopher tortoiseThey are a keystone speciesBurrows are a maximum of 15m longFunction of the scope is to take population surveys

Presented by Jane BartleyBackground

Figure 1. Gopher tortoise emerging from his burrow. [1]Team 214Our objective is to create a design that is: DurableCapablePortableAffordable

Presented by Jane BartleyObjectives and GoalsThe main goal is to design a mechanism that has testing sensors, better durability, and more advanced video capabilities than the current system in order to enhance the surveying process of gopher tortoises. Team 215RoverNavigates under groundCarries camera and sensorsUser Interface7 inch screenGamepad for controlsLinux based OSBatteryTetherPresented by Bridget LeenTop Level DesignRoverUser InterfaceBatteryActive USBRCA VideoDataPowerAbove GroundBelow Ground

Team 21Tether weight56ChassisCasing1/8 inch IR transmitting PlexiglasConstructionLaser cutAdhere with silicone sealantTreadsLynxmotion Tracks - Polypropylene/rubberCut width of 2 inch treads in half

Presented by Bridget LeenRover BodyFigure 2. CAD drawing of chassis body.

Team 217Simplified design Aileron systemPanning onlyJustificationsWide angle lensSimpler mechanismLess spaceServo motor

Presented by Bridget Leen

Pan Servo

Figure 3. Prototype aileron system.Team 218Gears and motors are fully enclosed200:1 gear ratioHigh torque - 0.706 Nm90 degree outputEasily positioned in the chassisAllows shaft to be connected to the axlePresented by Jane BartleyGearmotorsFigure 4. 200:1 Plastic gearmotors (dimensions in mm) [2]

Team 21-Other gearbox was too rudimentary; not enclosed89Decided to use waterproof connections instead of hand-crafted stops.Features:Kevlar50 ft3/4 inTensile strength- 440 ksi

Presented by Jane BartleyTether

Figure 5. Kevlar expandable braided sheathing. [3]Team 21-ksi- killa pounds per square inches

910DHTxx sensors measure both temperature and humidityOne wire communicationCode written for the DHT11 is compatible with the DHT22The DHT22 measures:Relative Humidity from 0% to 100% with 2% accuracyTemperatures from -45C to 125C with 0.2C accuracyPresented by Colin RileySensorsFigure 6. The DHT11 (blue) and DHT22 (white) temperature/humidity sensors. [4]

Team 21Image source: https://learn.adafruit.com/dht/overview

Content source: http://www.adafruit.com/datasheets/DHT22.pdf101112 V power is supplied by a buck converter connected to the tether5 V power is supplied by an output pin on the motor driverAll components share a common groundArduino Micro controls all data lines

Presented by Colin RileyElectrical Schematic

Team 2112Main loop of program has been kept as short a possibleMajority of the code is located in functions, which can be called from the main loopOpen-source libraries of code were used instead of custom solutions when possibleCode has been heavily commented to increase readabilityPresented by Colin RileyRover Programming

Team 2113Presented by Colin RileyRover Electronics Testing

Team 2114Initial prototypeBuilt in NovemberOff-the-shelf hobby kitRecent progressLaser-cut ABS chassis body and casingCustom treadsSimultaneously controlled motor driver, servo and temp/humidity sensorPresented by Bridget LeenPrototypes

Figure 7. Initial prototype (top) and recent prototype (bottom).

Team 2115Spent about 54% of total budgetTwo prototypesTesting New componentsStill need:Tether connectionRaw materials

Presented by Bridget LeenBudget Figure 8. Budget burn chart.

Team 211516RoverSolder component connectionsOutdoor testingControl testingWater resistanceFashion axlesTest durability of the plexiglassUser InterfaceCreate a program to read commands from the gamepadBuild permanent casing

Presented by Colin RileyFuture WorkTeam 21Image distortion1617Identified needs and objectivesIntegrated components Began construction of above and below ground subsystemsCompleted initial testingStarted construction of a second stage prototypePresented by Jane BartleySummaryTeam 2118"Gopher Tortoise." Wildlife. Meryman Environmental, n.d. Web. 20 Jan. 2015. ."Pololu - 200:1 Plastic Gearmotor, 90 Output." Pololu - 200:1 Plastic Gearmotor, 90 Output. Pololu, 2015. Web. 16 Feb. 2015. ."Kevlar Expandable Braided Sleeving." Kevlar Expandable Braided Sleeving. Cable Organizer, 2015. Web. 16 Feb. 2015. ."DHTxx Sensors."Overview. Adafruit, 29 July 2012. Web. 16 Feb. 2015. .

Presented by Jane BartleyReferencesTeam 2119Presented by Jane BartleyQuestions?For more information go to:eng.fsu.edu/me/senior_design/2015/team21Team 2120Appendix: Gantt Chart

Team 21