1. Senior Design I Project Summer B 2006

2. Overview Objectives Constraints Possible Components

3. Project Objectives To Modify a Remote Control Toy Car  To propose a new programmed behavior for the device The programmed behavior should be easily changed by means of program download  To Understand how the original device works by doing reverse engineering  To obtain system parameters by doing pre-modification benchmarks (Speed and reaction time before hitting and object in the car path)  Modify the device to accomplish the desired functions with an effective use of the determined benchmarks Easy To Use Economic Simple Circuitry

4. Constraints The project will be based on the Microchip PIC18F877A All the original electric components of the car must be physically removed from the car except for the motor, battery, switch and steering actuator. The car must be factory equipped with either a 6V or 9.6V block type rechargeable battery (No AA batteries allowed) Each modified device should have at least three different behaviors Project Should be completed by the presentation date indicated in the syllabus Teams should be composed of three or two members. There cannot be more than one two members team in the class. If there is a single person without team I will assign that person to a team of my choice.

5. Extra Credits There will be extra credits for:  First fully functional project  Best Accomplished project Extra credit can range from 1 to 5 absolute points

6. Components: GP2D12 Sharp GP2D12 Analog Distance Sensor http://www.parallax.com/detail.asp?product_id=605- 00003 http://www.parallax.com/detail.asp?product_id=605- 00003 Features  Less influence on the color of reflective objects, reflectivity  Line-up of distance output/distance judgement type Distance output type (analog voltage) GP2DI 2 Detecting distance 10 to 80cm Distance judgement type: GP2DI5 Judgement distance 24cm. Adjustable within the range of 10 to 80cm) 3. External control circuit is unnecessary  GP2D12.pdf GP2D12.pdf  $11.95

7. Components: GP2D12 80 cm 2.4 V

8. Components: GP2D12 14,000 lx

9. Components: 28015 Parallax's new PING)))™ ultrasonic sensor provides a very low-cost and easy method of distance measurement. This sensor is perfect for any number of applications that require you to perform measurements between moving or stationary objects. The PING)))™ sensor measures distance using sonar; an ultrasonic (well above human hearing) pulse is transmitted from the unit and distance-to-target is determined by measuring the time required for the echo return. http://www.parallax.com/detail.asp?product_id=28015 28015.pdf

10. Components: 28015 Features  Supply Voltage: 5 vdc  Supply Current: 30 mA typ; 35 mA max  Range: 3cm to3 m( 1.2in to 3.3yrds)  Input Trigger: positive TTL pulse, 2 uS mm, 5 uS typ.  Echo Pulse: positive TTL pulse, 115 uS to 18.5 mS  Echo Hold-off: 750 uS from fall of Trigger pulse  Burst Frequency: 40 kHz for 200 uS  Burst Indicator LED shows sensor activity  Delay before next measurement: 200 uS  Size: 22 mm H x 46 mm W x 16 mm D (0.84 in x 1.8 in x 0.6 in $24.95

11. Components: 28015

14. Components: Memsic 2125 Dual-axis Accelerometer The Memsic 2125 is a low cost, dual-axis thermal accelerometer capable of measuring dynamic acceleration (vibration) and static acceleration (gravity) with a range of ±2 g Key Features of the Memsic 2125:  Measure 0 to ±2 g on either axis; less than 1 mg resolution  Fully temperature compensated over 0° to 70° C range  Simple, pulse output of g-force for X and Y axis  Analog output of temperature (TOut pin)  Low current operation: less than 4 mA at 5 vdc http://www.parallax.com/detail.asp?product_id=28017 Memsic 2125.pdf $ 29

15. Components: Memsic 2125 Dual- axis Accelerometer How It Works Internally, the Memsic 2125 contains a small heater. This heater warms a "bubble" of air within the device. When gravitational forces act on this bubble it moves. This movement is detected by very sensitive thermopiles (temperature sensors) and the onboard electronics convert the bubble position [relative to g-forces] into pulse outputs for the X and Y axis. The pulse outputs from the Memsic 2125 are set to a 50% duty cycle at 0 g. The duty cycle changes in proportion to acceleration and can be directly measured by the BASIC Stamp. Figure 2 shows the duty cycle output from the Memsic 2125 and the formula for calculating g force.

16. Components: IR Transmitter Assembly Kit FEATURES  D= 940 nm  Chip material = GaAs  Package type: T-1 (3mm)  Matched Photosensor: QSC112  Narrow Emission Angle, 24°  High Output Power  Package material and color: Clear, peach tinted plastic http://www.parallax.com/detail.asp?product_id=350-00017 QEC112.pdf $2.40

17. Components: IR Transmitter Assembly Kit

18. Components: PNA4601M Infrared Receiver Features  Extension distance is 8 m or more  External parts not required  Adoption of visible light cutoff resin For infrared remote control systems $3.95 http://www.parallax.com/detail.asp?pr oduct_id=350-00014 http://www.parallax.com/detail.asp?pr oduct_id=350-00014 PNA4601M.pdf PNA4601Mapp.pdf

19. Components: PNA4601M Infrared Receiver

22. Componebts: Infrared Transistor #: 350-00018 A phototransistor is a light-sensitive device similar to other transistors which act as current amplifiers, except that it converts visible light, or photons, to current which is then amplified. http://www.parallax.com/d etail.asp?product_id=350 -00018 http://www.parallax.com/d etail.asp?product_id=350 -00018 $1.29

23. http://www.robotroom.com/HBridge.html

24. Components: TC4421/TC4422 Features High Peak Output Current: 9A Wide Input Supply Voltage Operating Range: 4.5V to 18V High Continuous Output Current: 2A Max Fast Rise and Fall Times:  30 ns with 4,700 pF Load  180 ns with 47,000 pF Load Short Propagation Delays: 30 ns (typ) Low Supply Current:  With Logic ‘1’ Input: 200 µA (typ)  With Logic ‘0’ Input: 55 µA (typ) Low Output Impedance: 1.4 (typ) Latch-Up Protected: Will Withstand 1.5A Output Reverse Current Input Will Withstand Negative Inputs Up To 5V Pin-Compatible with the TC4420/TC4429 6A MOSFET Driver Space-saving 8-Pin 6x5 DFN Package http://www.microchip.com/stellent/idcplg?IdcService=SS_GET_PAGE&nodeId=1335&dDocName =en010665

25. Components: TC4421/TC4422

27. Components:Parallax (Futaba) Continuous Rotation Servo: 900-00008 Technical Specifications  Power 6vdc max  Average Speed 60 rpm, Note: with 5vdc and no torque  Weight 45.0 grams/1.59oz  Torque 3.40 kg-cm/47oz-in  Size mm (L x W x H), 40.5x20.0x38.0  Size in (L x W x H), 1.60x.79x1.50  Manual adjustment port  www.parallax.com  continuous rotation $6.95 http://www.parallax.com/detail.asp?product_id=900-00008 crservo.pdf

28. Components:Parallax (Futaba) Continuous Rotation Servo: 900-00008

29. Overview Objectives Constraints Possible Components

30. & & Q uestions A nswers