1. Android Multi-Meter (AMM)
Senior Design I
Final Presentation
Powerpoint Templates

2. AMM Team Members Chris Parker Justin Taylor Daniel Hosler Team Leader
Electrical Engineer
Design
Hardware
Analog Readings
Computer Engineer
Website
App Programming
PIC Programming
Chris Parker
Justin Taylor
Computer Engineer
Website
App Programming
PIC Programming
Daniel Hosler
Adviser: Dr. Sherif Abdelwahed

3. Outline Problem Solution System Overview Constraints Prototype
Technical
Practical
Prototype
Evaluation
Future Work
Questions

4. Section 1
Problem and Solution

5. Problem
Most multimeters do not give you the ability of remote viewing. None of these multimeters enable Android devices as the screen.
Our market is users with Android devices with a job or hobby that involves electronics.

6. Solution
The AMM will allow users to take electrical readings from a distance that may either be more convenient or safer.
The AMM will take readings in several ranges of:
- Voltage - Capacitance
- Resistance
- Current

7. What is the AMM?
The user will use leads to take a reading of the electrical system of interest
The reading will be read into the microprocessor and sent to the wireless module
The wireless module will then send the information to the Android application which displays the result on the phone
AMM

8. System Overview Android Leads Application Bluetooth Max134 Pic24 RN-41
Power Supply

9. Technical and Practical Constraints
Section 2
Technical and Practical Constraints

10. Technical Constraints
Name
Description
Measurement
AC Voltage, AC Current, DC Voltage, DC Current, Resistance, Diode Check, Capacitance with ±2% of Range and ± 2 Counts
Wireless Comm.
20’ minimum range
Battery Life
10 hours
Data Logging
Maximum Sample Rate: 20 Hz On Board Memory: 32kB Flash
Display
Display data with needed prefix and decimal
places

11. Practical Constraints
Sustainability and Maintenance
The AMM application software will be regularly updated
Compatible for future devices
Longevity of usefulness
Fix bugs
Add functionality

12. Practical Constraints
Economic and Cost
The AMM will use cheaper hardware components than competitors.
The AMM will rely on the users personal display and not provide its own
The AMM will use an Android application that is less expensive for development

13. Prototype

14. Prototype
MAX134 DMM
Chip

15. Prototype
RMS to DC
Converter

16. Prototype
PIC24HJ128GP502
μController

17. Prototype
RN-41 Blue-
Tooth Module

18. Prototype
Capacitance Test Circuit

19. Evaluation

20. Evaluation
Software

21. Coding
Writing to the MAX registers

22. Coding
Reading to the MAX registers

23. Testing
Reading from the MAX 134

24. Testing
Transmitting MAX 134 Data

25. Testing
Debugging with RealTerm

26. Software
Android Application

27. Software
Android Application

28. Testing
Sending a Command

29. Evaluation
Hardware

30. DC Voltage Test Circuit

31. DC Voltage
DC Voltage Test Data

32. DC Current Test Circuit

33. DC Current
DC Current Test Data

34. AC Voltage Test Circuit

35. AC Voltage
AC Voltage Test Data

36. AC Current Test Circuit

37. AC Current
AC Current Test Data

38. Resistance Test Circuit

39. Resistance
Resistance Test Data

40. Capacitance Test Circuit

41. Capacitance
Capacitance Test Data

42. Sustained Connection Range
60 Feet

43. Normal Operation - 15 Hours Idle Conditions - 35 Hours
Battery
Battery Life
Normal Operation - 15 Hours
Idle Conditions - 35 Hours

44. Future Work Correct AC measurement errors
Improve capacitance resolution
Implement auto range features
Final PCB Design
Packaging

45. Android Multi-Meter (AMM)
Questions?
Senior Design I
Final Presentation