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Electronics Design for NI ARC 2013

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Presentation on theme: "Electronics Design for NI ARC 2013"— Presentation transcript:

1 Electronics Design for NI ARC 2013
Results Seminar Electronics Design for NI ARC 2013 By Joel Cottrell Supervisor: Nasser Asgari Team members: Rowan Pivetta, Joshua Renfrey

2 Contents Introduction Power Requirements Data Connections
Hand-sketched Draft Designs Schematic Design PCB Design Mouse Sensor Competition

3 Introduction NIARC: National Instruments Autonomous Robotics Competition April – September 2013 Scope: set by rules Team competition Joel Cottrell: Electronics Rowan Pivetta: Mechanical Joshua Renfrey: Software

4 Introduction (cont.)

5 Power Requirements 11.1V 3-cell LiPo 12V Redarc VI48D-12
2 Sabertooth 2x5 Motor Controllers 11.1V 3-cell LiPo Hokuyo UTM-30LX LIDAR NI Single Board RIO 9636 12V Redarc VI48D-12 2 Standard Servos: HITEC 645-MG 3 Miniature Servo: DGServo S05NF STD 6V TI PTN78020W Axis M1011-W IP Camera TP-Link WR702-N Router 5V TI PTN78020W Sparkfun 9-DOF Razor IMU 3.3V Regulator, UI pull-up resistors 5V sbRIO output Mouse Sensor Logic level converter 3.3V TI SMD LDO

6 Data Connections Direct from sbRIO sbRIO to Breakout
LIDAR USB (Comms Dev Class) Ethernet RJ-45 from Router Direct from sbRIO 50way ribbon cable (24 DIO pins) sbRIO to Breakout Routed straight from sbRIO 0.1” pitch header Mouse Sensor, IMU, Servo, Spare Requires 3.3V  5V logic level conversion Motor Controllers Pull-up resistors to sbRIO’s 5V User Interface (Switches)

7 Hand-sketched Draft Designs
Early thoughts about required parts and arrangements

8 Schematic Design Ideas, sketches Altium Designer Schematic
Schematic library parts Design cycle to refine schematic: When main structure was refined: Schematic  Printed Circuit Board Schematic manipulation Review, checking datasheets, team feedback Determine issues with current design

9 Final Schematic

10 PCB Design Specify physical shape of board
Place plated holes for mounting Component footprints and nets specified from schematic within same project Arrange parts across top and bottom layers Wiring and access requirements of robot Complexity of routing tracks between components General aesthetics and tidiness Remap pins, route tracks, draw silkscreen Submit for PCB manufacture by Entech

11 Final PCB 2D View Useful during design 3D View
Useful for seeing how parts fit together vertically

12 Ordering Parts – Element14
Qty Order Code Description Price ea Price total 10 LITTELFUSE MXP - FUSE, QUICK BLOW, 16A $0.68 $6.83 2 LITTELFUSE FUSE HOLDER, PCB, 20X5MM $1.45 $2.90 LITTELFUSE CAP, FUSEHOLDER, 20X5MM, FLUSH MOUNT $3.66 $7.32 1 TE CONNECTIVITY / AMP WIRE-BOARD CONN, RECEPTACLE, 50POS, 2MM $7.10 MULTICOMP - MC TERMINAL BLOCK, PCB, 2WAY, 26-12AWG $0.86 $8.57 8 VISHAY BC COMPONENTS CAPACITOR ALUM ELEC 330UF, 16V, 20%, AXIAL $0.55 $4.40 672105 HARWIN - M HEADER, VERTICAL, 2ROW, 50WAY $7.98 TEXAS INSTRUMENTS - PTN78020WAH - DC-DC CONV, LINEAR REG, 1 O/P, 90W, 6A $28.29 $56.58 BOURNS W-1-104LF - TRIMMER, 25 TURN 100K $4.66 $9.32 RL FAIRCHILD SEMICONDUCTOR - BSS138 - MOSFET,N CHAN, 50V, 220MA, SOT-23 $0.29 $2.88 4 TEXAS INSTRUMENTS - TLV CDCY - V REG, LDO, 3.3V, 0.8A, SOT-223-4 $0.57 $2.28 $116.16

13 3D Rendering of Board

14 Photo of Constructed Board

15 Mouse Sensor (Ground-Truth Velocity Sensor)
Proposal presentation demo: Quadrature LED Later sourced product: SPI LASER From Canon calculator-mouse Avago Technologies ADNS 7530

16 Competition Location: Swinburne University, Melbourne
Date: Tuesday, 24th September, 2013 Set up, calibration and testing allowed on 23rd 16 teams passed the 4 milestones to enter comp. 3 qualifying heats, 8 teams progress to finals 1-on-1 knockout finals, increasing in difficulty Prizes for winners, runners-up and best design

17 Qualifying Heats Travel from starting point to mining camp
Pick up the one gold cube Move to drop-off point (blue tape corner) Our best heat was fastest of any team

18 Finals Entered finals in first place
1-on-1 against a team that struggled to make it to finals Got off to a good start, but…

19 Unofficial Final vs UTS

20 Conclusion The electronics needs for this competition were met, with a solution that is: Professional Designed with Altium Designer, as used in Industry Manufactured using modern processes Fit for purpose, yet expandable Connectors, ratings and functionality chosen for robot Adjustable voltage regulators, spare IO headers Successful overall Robot was capable of completing task competitively Despite unfortunate result, positive feedback was received

21 Bibliography NIARC Facebook:
NIARC Website: Element14: Oz Game Shop: Initiative mittelstand:

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