Final project presentation ea
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This document summarizes Eric Ayala's final project report for an applied electronics course. The project involved building an electronic compass that displays cardinal directions. It cost $25.83 to complete and took seven weeks. The compass uses a PIC microprocessor, compass sensor module, and alphanumeric display. It runs on a 9V battery and was programmed using Flowcode software to display the correct directions based on sensor input.
Final project presentation ea
- 1. FINAL PROJECT REPORT BY ERIC AYALA ECT-295L APPLIED PROJECT INSTRUCTOR: PROFESSOR CLIFF PRESENT
- 2. TABLE OF CONTENTS 1. Executive Summary 2. Description 3. Justification 4. Schematic 5. Parts List 6. Theory of Operation 7. Software Listing Letters 8. Software Listing Arrows 9. Block Diagram 10. Test Procedure 11. Test Report 12. Time Line 13. Problems 14. References 15. Data Sheets
- 3. EXECUTIVE SUMMARY • Built an electronic compass • Displays the cardinal directions • Costs $25.83 • Took seven weeks to complete
- 4. DESCRIPTION • Had to order and build the compass within a deadline and budget. • The compass needed hardware and software construction. • Hardware: soldered and assembled the components onto the circuit board. • Software: created a program that instructs the hardware what to do. • Within the deadline I would document a weekly progress report upon completion.
- 5. JUSTIFICATION MintyBoostv3.0 • Its purpose is to function as a small portable USB charger for devices like iPhones and iPods. • Costs $19.50. Chap Stick LED Flashlight • Functions as a mini flashlight. • Made from LEDs, Chap Stick Tube, battery and more… Electronic Compass • Runs on hardware and software. • Displays all the cardinal directions. • Costs $25.83. • I chose to build the compass because the other devices were too easy to make. • Plus, I need practice in programming so that will help my experience.
- 6. SCHEMATIC U3 PIC16F72 MCLR A0 A1 A2 A3 A4 A5 VSS OCS1 OSC2 C0 C1 C2 C3 C4 C5 C6 C7 Vss Vdd B0 B1 B2 B3 B4 B5 B6 B7 U2 08FYD5421AS E1 N2 NC3 M4 L5 G26 D7 DP8 C9 B 10 CC2 11 A 12 G1 13 K 14 J 15 CC1 16 H 17 F 18 Bus1 F(1) H(2) E(3) N(4) G1(5) A(6) L(7) C(11) CC1(8) CC2(9) R2 220Ω R5 220Ω Bus1 Bus1 B5(12) B4(14) B1(15) B0(16) C7(17) C6(18) B7(19) B6(20) C5(21) B3(22) B2(23) C4(24) C1(25) G2(26) D(27) B Title: Designed by: Checked by: Approved by: Document No: Date: Sheet of Revision: Size: COMPASS2 COMPASS2 Eric Ayala ECT-295L 0001 2012-12-04 1 1 1.0 A Desc.: 801-111 Peter Street Toronto, ON M5V 2H1 (416) 977-5550 National Instruments U1 LM7805CT LINE VREG COMMON VOLTAGE VDD 5V C1 10µF C3 1µF C2 1µF P1 HDR1X2 On/Off jumper C4 10pF R1 10kΩ RNET1E 100kΩ VDD 5V C5 10pF U4 11S1490 SB1 SE2 SC3 EB4 EE5 EC6 NB 7 NE 8 NC 9 WB 10 WE 11 WC 12 RNET1C 100kΩ RNET1B 100kΩ RNET1A 100kΩ RNET1E4 100kΩ K M J
- 7. PARTS LIST Item # Quantity Part # Description Vendor Item Cost Subtotal 1 2 14DK50010P-W Ceramic Cap 10pf (0.2' spacing) RadioShack 2 x $0.74 $1.48 2 2 14MN0501U-W Mono Cap 1uf (0.2' spacing) RadioShack 2 x $1.75 $3.50 3 2 13005220 220 ohm, 1/4W RadioShack 2 x $1.44 $2.88 4 1 1300510K 10k ohm, 1/4W RadioShack 1 x $1.44 $1.44 5 1 14ER05010O 10uf electro cap sparkfun ELECTRONICS 1 X $0.45 $0.45 6 1 08FYD5421AS Dual alphanumeric display Ebay 1 x $2.50 $2.50 7 1 10PIC16F72-I/SP PIC Microprocessor 16F72 Ebay 1 x $2.39 $2.39 8 1 19ICL28-N IC socket 28 pin Ebay 1 x $0.99 $0.99 9 1 11S1490 Compass module -Sensor 1490 Zagros Robotics 1 x $16.95 $16.95 10 1 24SHTEXBAR Shorting Bar (Long Bar) Digi-Key Corporation 1 x $4.75 $4.75 11 1 107805-L 5 Volt Regulator 78L05 Ebay 1 x $1.99 $1.99 12 1 2800RG9 9V battery Ebay 1 x $0.99 $0.99 13 1 2801BSI 9V battery conector Ebay 1 x $0.59 $0.59 14 1 97COMPASS PCB Ebay 1 x $3.98 $3.98 15 1 240220DF Female Header (10x2) Ebay 1 x $0.99 $0.99 16 1 23561L6.50 Nylon tapped spacer 1/2' Ebay 1 x $0.99 $0.99 17 1 2321M3-10 Screw M3-10 RC PLANET 1 x $2.49 $2.49 18 1 13S8,7100K 100k SIP (8,7) network Ebay 1 x $1.00 $1.00 19 1 240202S Jumper 1x2 Ebay 1 x $0.99 $0.99 20 1 60700 Solder Tube RadioShack 1 x $7.49 $7.49 21 1 2330RB1 Rubber Feet Ebay 1 x $2.99 $2.99 Total $61.82 1 32DVRECETCOMPR1 Electronic Compass Kit Follet Bookstore 1 x $25.83 $25.83
- 8. THEORY OF OPERATION • For software: Converted binary data into hexadecimal in order to simplify the program Assigned cardinal directions to the proper ports (A, B, & C)
- 9. THEORY OF OPERATION CONT. • Also, the data was used to program the PIC to send data at the correct segments
- 10. THEORY OF OPERATION CONT. • Flowcode • Used conditions to hold true an input which displayed an output until it became false • Then, created a loop that made it possible to use both sides of the display by having each side flicker back and forth fast
- 11. THEORY OF OPERATION CONT. • For hardware, the compass needs its electronic components: • a sensor which detects the cardinal directions • an alphanumeric display which will display the cardinal directions • a programmable integrated circuit that processes the programmed data • a female header that will provide an interface for another circuit that connects to the PC • a shorting bar that controls the on/off state of the board. • Plus, the circuit also runs on its: • 9V battery supply, capacitors, resistors, SIP and voltage regulator which: • supplies, stores, limits and regulates the current throughout the circuit.
- 16. BLOCK DIAGRAM 9V battery PIC Microprocessor 16F72 Dual alphanumeric display Compass module sensor
- 17. TEST PROCEDURE 1. Checked if the circuit connectivity by connecting the 9V battery. 2. Turned the compass clockwise and counter- clockwise to check if the display module was displaying the correct signals from the sensor. 3. Compared the cardinal directions of my compass to a functional compass.
- 18. TEST REPORT Voltage: 7.79V Current: 28.7mA Power : Ohm’s Law P = V x I = 223.57mW
- 19. TIME LINE Week 1: Reviewed three possible projects and chose the preferred project based on a budget, time and difficulty. Week 2: Created a schematic diagram of electronic compass that displays the connectivity throughout the circuit. Week 3: Created the first initiation of the program that displayed singly four letters (N, S, W, and E). Week 4: Created/converted binary data to hexadecimal and decimal in order to simplify the program. We altered the program to display the rest of the cardinal directions (NW, NE, SW, and SE). Week 5: Received my compass kit. Then, soldered and assembled my circuit. And, added some adjustments to the program that displayed arrows that always point north. I then programmed my own board for the first time. Week 6: Experimented more with the software and added the compatible hardware that adjusted with the new program. This involved adding a speaker, wires, and a capacitor. So, by using a speaker the program will output different frequencies at different cardinal directions. Week 7: Documented the whole project on the electronic compass which includes a: technical summary, description, justification, schema tic diagram, parts list, theory of operation, software listings, block diagram, test procedure and report, time line, problems, references and data sheets.
- 20. PROBLEMS 1. First, I didn’t receive my kit until the fifth week. But, the instructor let me borrow his kit so I could test my programs. 2. Then, the other problem was that I had trouble getting my program to work properly. I had forgotten to declare my variables but the instructor overlooked it and caught the mistake.
- 21. REFERENCES 1. Professor Cliff Present 2. Colleague Paul Noska 3. Datasheet: PIC16F72 (http://ww1.microchip.com/downloads/en/devicedoc/3959 7b.pdf) 4. eCollege (www.devryu.net)
- 22. DATA SHEETS