MGC3130 – Sabrewing
Single-Zone Evaluation Kit
User’s Guide
2013 Microchip Technology Inc.
DS41685A
Note the following details of the code protection feature on Microchip devices:
•
Microchip products meet the specification contained in their particular Microchip Data Sheet.
•
Microchip believes that its family of products is one of the most secure families of its kind on the market today, when used in the
intended manner and under normal conditions.
•
There are dishonest and possibly illegal methods used to breach the code protection feature. All of these methods, to our
knowledge, require using the Microchip products in a manner outside the operating specifications contained in Microchip’s Data
Sheets. Most likely, the person doing so is engaged in theft of intellectual property.
•
Microchip is willing to work with the customer who is concerned about the integrity of their code.
•
Neither Microchip nor any other semiconductor manufacturer can guarantee the security of their code. Code protection does not
mean that we are guaranteeing the product as “unbreakable.”
Code protection is constantly evolving. We at Microchip are committed to continuously improving the code protection features of our
products. Attempts to break Microchip’s code protection feature may be a violation of the Digital Millennium Copyright Act. If such acts
allow unauthorized access to your software or other copyrighted work, you may have a right to sue for relief under that Act.
Information contained in this publication regarding device
applications and the like is provided only for your convenience
and may be superseded by updates. It is your responsibility to
ensure that your application meets with your specifications.
MICROCHIP MAKES NO REPRESENTATIONS OR
WARRANTIES OF ANY KIND WHETHER EXPRESS OR
IMPLIED, WRITTEN OR ORAL, STATUTORY OR
OTHERWISE, RELATED TO THE INFORMATION,
INCLUDING BUT NOT LIMITED TO ITS CONDITION,
QUALITY, PERFORMANCE, MERCHANTABILITY OR
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suits, or expenses resulting from such use. No licenses are
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Trademarks
The Microchip name and logo, the Microchip logo, dsPIC,
FlashFlex, KEELOQ, KEELOQ logo, MPLAB, PIC, PICmicro,
PICSTART, PIC32 logo, rfPIC, SST, SST Logo, SuperFlash
and UNI/O are registered trademarks of Microchip Technology
Incorporated in the U.S.A. and other countries.
FilterLab, Hampshire, HI-TECH C, Linear Active Thermistor,
MTP, SEEVAL and The Embedded Control Solutions
Company are registered trademarks of Microchip Technology
Incorporated in the U.S.A.
Silicon Storage Technology is a registered trademark of
Microchip Technology Inc. in other countries.
Analog-for-the-Digital Age, Application Maestro, BodyCom,
chipKIT, chipKIT logo, CodeGuard, dsPICDEM,
dsPICDEM.net, dsPICworks, dsSPEAK, ECAN,
ECONOMONITOR, FanSense, HI-TIDE, In-Circuit Serial
Programming, ICSP, Mindi, MiWi, MPASM, MPF, MPLAB
Certified logo, MPLIB, MPLINK, mTouch, Omniscient Code
Generation, PICC, PICC-18, PICDEM, PICDEM.net, PICkit,
PICtail, REAL ICE, rfLAB, Select Mode, SQI, Serial Quad I/O,
Total Endurance, TSHARC, UniWinDriver, WiperLock, ZENA
and Z-Scale are trademarks of Microchip Technology
Incorporated in the U.S.A. and other countries.
SQTP is a service mark of Microchip Technology Incorporated
in the U.S.A.
GestIC and ULPP are registered trademarks of Microchip
Technology Germany II GmbH & Co. KG, a subsidiary of
Microchip Technology Inc., in other countries.
All other trademarks mentioned herein are property of their
respective companies.
© 2013, Microchip Technology Incorporated, Printed in the
U.S.A., All Rights Reserved.
Printed on recycled paper.
ISBN: 9781620770481
QUALITY MANAGEMENT SYSTEM
CERTIFIED BY DNV
== ISO/TS 16949 ==
DS41685A-page 2
Microchip received ISO/TS-16949:2009 certification for its worldwide
headquarters, design and wafer fabrication facilities in Chandler and
Tempe, Arizona; Gresham, Oregon and design centers in California
and India. The Company’s quality system processes and procedures
are for its PIC® MCUs and dsPIC® DSCs, KEELOQ® code hopping
devices, Serial EEPROMs, microperipherals, nonvolatile memory and
analog products. In addition, Microchip’s quality system for the design
and manufacture of development systems is ISO 9001:2000 certified.
2013 Microchip Technology Inc.
MGC3130 – SABREWING
SINGLE-ZONE EVALUATION KIT
USER’S GUIDE
Table of Contents
Chapter 1. Overview
1.1 Introduction ................................................................................................... 11
1.1.1 MGC3130 System Overview ..................................................................... 11
1.1.2 MGC3130 Controller ................................................................................. 11
1.1.3 GestIC® Library ......................................................................................... 12
1.1.4 External Electrodes ................................................................................... 12
1.2 Sabrewing Evaluation Kit ............................................................................. 12
1.2.1 Sabrewing Single-Zone Evaluation Board ................................................. 12
1.2.2 MGC3130 Software Release Package ...................................................... 13
Chapter 2. Getting Started
2.1 Prerequisites ................................................................................................ 15
2.2 Step 1: Connecting Sabrewing with your PC ............................................... 15
2.3 Step 2: Install Windows CDC Driver ............................................................. 15
2.4 Step 3: Start Aurea ....................................................................................... 15
Chapter 3. MGC3130 – Sabrewing Evaluation Board
3.1 Board Construction and Layout .................................................................... 17
3.2 MGC3130 Reference Circuitry ..................................................................... 18
3.3 Electrodes ................................................................................................... 18
3.4 I2C™ to USB Bridge .................................................................................... 21
Chapter 4. Troubleshooting
Appendix A. Schematics
A.1 Introduction .................................................................................................. 25
A.2 Bill of Material .............................................................................................. 25
A.3 Board Schematic and Layout ....................................................................... 26
Appendix B. Sensitivity Profile and Capacities
B.1 Introduction .................................................................................................. 29
B.2 Sensitivity Profiles ........................................................................................ 29
B.3 Electrode Capacities .................................................................................... 30
Appendix C. Driver Installation Manual
Appendix D. Glossary
2013 Microchip Technology Inc.
DS41685A-page 3
MGC3130 – Sabrewing Single-Zone Evaluation Kit User’s Guide
NOTES:
DS41685A-page 4
2013 Microchip Technology Inc.
MGC3130 – SABREWING
SINGLE-ZONE EVALUATION KIT
USER’S GUIDE
Preface
NOTICE TO CUSTOMERS
All documentation becomes dated, and this manual is no exception. Microchip tools and
documentation are constantly evolving to meet customer needs, so some actual dialogs
and/or tool descriptions may differ from those in this document. Please refer to our web site
(www.microchip.com) to obtain the latest documentation available.
Documents are identified with a “DS” number. This number is located on the bottom of each
page, in front of the page number. The numbering convention for the DS number is
“DSXXXXXA”, where “XXXXX” is the document number and “A” is the revision level of the
document.
For the most up-to-date information on development tools, see the MPLAB IDE online help.
Select the Help menu, and then Topics to open a list of available online help files.
INTRODUCTION
This chapter contains general information that will be useful to know before using the
Sabrewing Single-Zone Evaluation Kit. Items discussed in this chapter include:
•
•
•
•
•
•
•
•
•
Document Layout
Conventions Used in this Guide
Warranty Registration
Recommended Reading
The Microchip Web Site
Development Systems Customer Change Notification Service
Customer Support
Software License Information
Document Revision History
DOCUMENT LAYOUT
This document describes the installation and use of the Sabrewing Single-Zone
Evaluation Kit. The document is organized as follows:
•
•
•
•
•
•
•
•
Chapter 1. “Overview”
Chapter 2. “Getting Started”
Chapter 3. “MGC3130 – Sabrewing Evaluation Board”
Chapter 4. “Troubleshooting”
Appendix A. “Schematics”
Appendix B. “Sensitivity Profile and Capacities”
Appendix C. “Driver Installation Manual”
Appendix D. “Glossary”
2013 Microchip Technology Inc.
DS41685A-page 5
MGC3130 – Sabrewing Single-Zone Evaluation Kit User’s Guide
CONVENTIONS USED IN THIS GUIDE
This manual uses the following documentation conventions:
DOCUMENTATION CONVENTIONS
Description
Arial font:
Italic characters
Initial caps
Quotes
Underlined, italic text with
right angle bracket
Bold characters
N‘Rnnnn
Text in angle brackets < >
Courier New font:
Plain Courier New
Represents
Referenced books
Emphasized text
A window
A dialog
A menu selection
A field name in a window or
dialog
A menu path
MPLAB IDE User’s Guide
...is the only compiler...
the Output window
the Settings dialog
select Enable Programmer
“Save project before build”
A dialog button
A tab
A number in verilog format,
where N is the total number of
digits, R is the radix and n is a
digit.
A key on the keyboard
Click OK
Click the Power tab
4‘b0010, 2‘hF1
Italic Courier New
Sample source code
Filenames
File paths
Keywords
Command-line options
Bit values
Constants
A variable argument
Square brackets [ ]
Optional arguments
Curly brackets and pipe
character: { | }
Ellipses...
Choice of mutually exclusive
arguments; an OR selection
Replaces repeated text
Represents code supplied by
user
DS41685A-page 6
Examples
File>Save
Press <Enter>, <F1>
#define START
autoexec.bat
c:\mcc18\h
_asm, _endasm, static
-Opa+, -Opa0, 1
0xFF, ‘A’
file.o, where file can be
any valid filename
mcc18 [options] file
[options]
errorlevel {0|1}
var_name [,
var_name...]
void main (void)
{ ...
}
2013 Microchip Technology Inc.
Preface
WARRANTY REGISTRATION
Please complete the enclosed Warranty Registration Card and mail it promptly. Sending in the Warranty Registration Card entitles users to receive new product updates.
Interim software releases are available at the Microchip web site.
RECOMMENDED READING
This user’s guide describes how to use the Sabrewing Single-Zone Evaluation Kit.
Other useful documents are listed below. The following Microchip documents are available and recommended as supplemental reference resources.
MGC3130 – Single-Zone 3D Gesture Controller Data Sheet (DS41667)
Consult this document for information regarding the MGC3130 3D Tracking and
Gesture Controller.
MGC3130 – Aurea Graphical User Interface User’s Guide (DS41681)
This document describes the installation and use of Aurea. Microchip’s Aurea is a
Windows-based graphical user interface that can be used to demonstrate, evaluate
and configure Microchip’s MGC3130 3D tracking and Gesture Controller.
2013 Microchip Technology Inc.
DS41685A-page 7
MGC3130 – Sabrewing Single-Zone Evaluation Kit User’s Guide
THE MICROCHIP WEB SITE
Microchip provides online support via our web site at www.microchip.com. This web
site is used as a means to make files and information easily available to customers.
Information about GestIC® technology and MGC3130 can be directly accessed via
www.microchip.com/gestic.
Documentation and software releases of the Sabrewing Evaluation Board can be found
at www.microchip.com/GestICGettingStarted.
DEVELOPMENT SYSTEMS CUSTOMER CHANGE NOTIFICATION SERVICE
Microchip’s customer notification service helps keep customers current on Microchip
products. Subscribers will receive e-mail notification whenever there are changes,
updates, revisions or errata related to a specified product family or development tool of
interest.
To register, access the Microchip web site at www.microchip.com, click on Customer
Change Notification and follow the registration instructions.
The Development Systems product group categories are:
• Compilers – The latest information on Microchip C compilers, assemblers, linkers
and other language tools. These include all MPLAB® C compilers; all MPLAB
assemblers (including MPASM™ assembler); all MPLAB linkers (including
MPLINK™ object linker); and all MPLAB librarians (including MPLIB™ object
librarian).
• Emulators – The latest information on Microchip in-circuit emulators.This
includes the MPLAB® REAL ICE™ and MPLAB ICE 2000 in-circuit emulators.
• In-Circuit Debuggers – The latest information on the Microchip in-circuit
debuggers. This includes MPLAB ICD 3 in-circuit debuggers and PICkit™ 3
debug express.
• MPLAB IDE – The latest information on Microchip MPLAB IDE, the Windows Integrated Development Environment for development systems tools. This list is
focused on the MPLAB IDE, MPLAB IDE Project Manager, MPLAB Editor and
MPLAB SIM simulator, as well as general editing and debugging features.
• Programmers – The latest information on Microchip programmers. These include
production programmers such as MPLAB REAL ICE in-circuit emulator, MPLAB
ICD 3 in-circuit debugger and MPLAB PM3 device programmers. Also included
are nonproduction development programmers such as PICSTART® Plus and
PICkit 2 and 3.
DS41685A-page 8
2013 Microchip Technology Inc.
Preface
CUSTOMER SUPPORT
Users of Microchip products can receive assistance through several channels:
•
•
•
•
Distributor or Representative
Local Sales Office
Field Application Engineer (FAE)
Technical Support
Customers should contact their distributor, representative or field application engineer
(FAE) for support. Local sales offices are also available to help customers.
Technical support is available through the web site at:
http://www.microchip.com/support.
SOFTWARE LICENSE INFORMATION
Copyright (C) 2012 Microchip Technology Inc. and its subsidiaries (“Microchip”). All
rights reserved.
You are permitted to use the Aurea software, GestIC API, and other accompanying
software with Microchip products. Refer to the license agreement accompanying this
software, if any, for additional info regarding your rights and obligations.
SOFTWARE AND DOCUMENTATION ARE PROVIDED “AS IS” WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING WITHOUT
LIMITATION, ANY WARRANTY OF MERCHANTABILITY, TITLE, NON-INFRINGEMENT AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL
MICROCHIP, SMSC, OR ITS LICENSORS BE LIABLE OR OBLIGATED UNDER
CONTRACT, NEGLIGENCE, STRICT LIABILITY, CONTRIBUTION, BREACH OF
WARRANTY, OR OTHER LEGAL EQUITABLE THEORY FOR ANY DIRECT OR INDIRECT DAMAGES OR EXPENSES INCLUDING BUT NOT LIMITED TO ANY INCIDENTAL, SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES, OR OTHER
SIMILAR COSTS.
DOCUMENT REVISION HISTORY
Revision A (March 2013)
• Initial release of the document.
2013 Microchip Technology Inc.
DS41685A-page 9
MGC3130 – Sabrewing Single-Zone Evaluation Kit User’s Guide
NOTES:
DS41685A-page 10
2013 Microchip Technology Inc.
MGC3130 – SABREWING
SINGLE-ZONE EVALUATION
KIT USER’S GUIDE
Chapter 1. Overview
1.1
INTRODUCTION
1.1.1
MGC3130 System Overview
The MGC3130 is the first product based on Microchip’s GestIC® technology. It is
developed as a mixed signal controller. The MGC3130 has one transmit and five very
sensitive receive channels that are capable to detect distortions of a transmitted electrical
field (E-field) corresponding to capacitive changes in the femtofarad (1fF = 10-15F) range.
In order to transmit and receive an electrical field, electrodes have to be connected to the
transmitting and receiving channels of the MGC3130 controller. The spatial arrangement
of the electrodes allow the chip to determine the center of gravity of the electric field
distortion, and thus position tracking of a user’s hand in the detection space.
The entire system solution is composed by three main building blocks (see Figure 1-1):
• MGC3130 Controller Chip
• Embedded GestIC Library
• External Electrodes
FIGURE 1-1:
MGC3130 CONTROLLER SYSTEM
To application
host
Communications
Interfaces
Signal Processing
Unit
GestIC®
Library
5 Rx
External
Electrodes
Analog Front End
Tx
1.1.2
MGC3130
Controller
MGC3130 Controller
The MGC3130 features the following main building blocks:
• Low-noise Analog Front End (AFE)
• Digital Signal Processing Unit (SPU)
• Flexible Communication Interfaces
The MGC3130 controller provides a transmit signal to generate the E-field, conditions
the analog signals from the receiving electrodes and processes this data digitally on
the SPU. Data exchange between the MGC3130 and the host is conducted via the
communication interfaces.
2013 Microchip Technology Inc.
DS41685A-page 11
MGC3130 – Sabrewing Single-Zone Evaluation Kit User’s Guide
Please refer to the “MGC3130 Single-Zone 3D Gesture Controller Data Sheet”
(DS41667) for more details.
1.1.3
GestIC® Library
The embedded GestIC library is optimized to ensure continuous and real-time
free-space Position Tracking and Gesture Recognition, concurrently. It is fully
configurable and allows required parameterization for individual application and
electrode layouts.
1.1.4
External Electrodes
Five Rx electrodes and one Tx electrode are connected to MGC3130. An electrode
needs to be individually designed for optimal E-field distribution and detection of E-field
variations inflicted by a user.
1.2
SABREWING EVALUATION KIT
The MGC3130 Single-Zone Evaluation Kit “Sabrewing“ is designed for evaluation of
Microchip’s MGC3130 3D Tracking and Gesture Controller core features which
contains:
• Hand Position Tracking in three dimensions (x, y, z)
• Hand Gesture Recognition based on a stochastic Hidden Markov Model (HMM)
• Approach detection for power saving
1.2.1
Sabrewing Single-Zone Evaluation Board
The Sabrewing Evaluation Board features the MGC3130 reference circuit, an I2C™ to
USB Bridge and built-in 7" single-zone frame electrodes.
The package contains:
• Sabrewing Evaluation Board
• USB Cable
FIGURE 1-2:
DS41685A-page 12
SABREWING EVALUATION BOARD PACKAGE
2013 Microchip Technology Inc.
Overview
1.2.2
MGC3130 Software Release Package
The MGC3130 software release package contains all relevant system software and
can be downloaded from Microchip’s web site
www.microchip.com/GestICGettingStarted.
The package contains:
• Aurea PC software
• GestIC Library binary file
• Windows CDC driver
2013 Microchip Technology Inc.
DS41685A-page 13
MGC3130 – Sabrewing Single-Zone Evaluation Kit User’s Guide
NOTES:
DS41685A-page 14
2013 Microchip Technology Inc.
MGC3130 – SABREWING
SINGLE-ZONE EVALUATION
KIT USER’S GUIDE
Chapter 2. Getting Started
2.1
PREREQUISITES
The following prerequisites have to be fulfilled to run the Sabrewing system:
• PC with Windows® XP, Windows 7 or Windows 8 operating system and USB 2.0
port
• Sabrewing Evaluation Board
• Latest MGC3130 software release package
The MGC3130 software release package is available as a .zip file
(www.microchip.com/GestICGettingStarted). Unzip the file, run setup.exe and install
the release package to your PC. The folder structure is as shown in Figure 2-1.
FIGURE 2-1:
2.2
FOLDER STRUCTURE
STEP 1: CONNECTING SABREWING WITH YOUR PC
Use the supplied USB cable to connect the Sabrewing Evaluation Board to your PC.
The Power LED on the Sabrewing Board should illuminate. Furthermore, LED 1 and
LED 2 should blink simultaneously.
In case LED 1 and LED 2 blink alternatingly, the Windows CDC driver is already
installed on your PC. Please skip the next step and go to Section 2.4 “Step 3: Start
Aurea”.
2.3
STEP 2: INSTALL WINDOWS CDC DRIVER
The Windows CDC driver can be found in the MGC3130 software release package
folder 04_Driver.
When the Sabrewing Evaluation Board is connected to your PC for the first time,
Windows requests the appropriate device driver and guides you through the installation
process.
Alternatively, you can install the driver manually, e.g. using the device manager. An
example for Windows 7 is given in Appendix C. “Driver Installation Manual”.
2.4
STEP 3: START AUREA
Aurea Graphical User Interface, shown in Figure 2-2, is included in the MGC3130
software release package in the folder 02_Aurea.
Open Aurea.exe. Aurea detects the connected device automatically and is ready for
use. For more information on Aurea, refer to the “MGC3130 – Aurea Graphical User
Interface User’s Guide” (DS41681).
2013 Microchip Technology Inc.
DS41685A-page 15
MGC3130 – Sabrewing Single-Zone Evaluation Kit User’s Guide
FIGURE 2-2:
AUREA GRAPHICAL USER INTERFACE
Evaluate Colibri Suite
DS41685A-page 16
Discover Signals
Setup MGC3130
1. Positions Tracking
1. View signals
1. Signal matching
2. Gesture Recognition
2. Write log file
2. Tx settings
3. Demo applications
3. Advanced features
3. Update GestIC Library
2013 Microchip Technology Inc.
MGC3130 – SABREWING
SINGLE-ZONE EVALUATION KIT
USER’S GUIDE
Chapter 3. MGC3130 – Sabrewing Evaluation Board
3.1
BOARD CONSTRUCTION AND LAYOUT
The Sabrewing Evaluation Board, shown as a block diagram in Figure 3-1, is organized
in three sections:
•
•
•
MGC3130 Reference Circuitry
Built-in 7" frame sensing electrodes
I2C to USB Bridge
In the following chapters, they are explained in detail.
FIGURE 3-1:
Electrodes
SABREWING EVALUATION BOARD BLOCK DIAGRAM
MGC3130 Reference Circuitry
I2CTM to USB Bridge
USB
LED Bar
Reset
Button
3.3V
Interface
select
7" Frame
Electrodes
I2C
MGC3130
USB to I2C
PIC18F14K50
USB
3.3V
3.3V
LDO
MCP1801
5V
Legend:
Power
Data
Electrode Signal
Component
Interface
The key components of the Sabrewing Evaluation Board are listed below and highlighted in Figure 3-2:
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
MGC3130 3D Tracking and Gesture Controller
Built-in 7" frame electrodes
Interface select
LED bar signalling when board is powered and indicating the communication
status
Microchip’s PIC18F14K50 USB microcontroller passing messages between
MGC3130 and the PC
USB mini-B connector to connect the board to a PC
Reset button resetting the MGC3130
Microchip’s MCP1801 LDO voltage regulator converting 5V USB power to 3.3V
board supply
Acrylic glass (180 x 116.5 x 2 mm) simulating the housing of a target device
Plastic rivets mounting the acrylic glass to the PCB
2013 Microchip Technology Inc.
DS41685A-page 17
MGC3130 – Sabrewing Single-Zone Evaluation Kit User’s Guide
FIGURE 3-2:
SABREWING EVALUATION BOARD KEY ELEMENTS
4
1
2
5
6
3
7
8
10
9
3.2
MGC3130 REFERENCE CIRCUITRY
The key element of the MGC3130 Reference Circuitry is Microchip’s MGC3130 3D
Tracking and Gesture Controller. It is powered by a single 3.3V power supply. The
MGC3130 Reset is controlled by the Reset button on the board or via the
PIC18F14K50. The communication to the USB bridge is realized through I2C0.
The five Rx channels of the chip are connected to the electrodes via 1 kOhm resistors
in order to suppress irradiated high-frequency signals.
Please refer to the “MGC3130 Single-Zone 3D Gesture Controller Data Sheet”
(DS41667).
3.3
ELECTRODES
The Sabrewing Evaluation Board uses a Double Layer Electrode Design with the
electrodes built right into the PCB. They consist of one Tx and five Rx electrodes
(north, east, south, west, center), which are placed in different layers (Figure 3-3).
The dimensions on the electrode’s outer edges are 148 mm x 98.7 mm. The aspect
ratio of the sensing area is 3:2.
DS41685A-page 18
2013 Microchip Technology Inc.
MGC3130 – Sabrewing Evaluation Board
FIGURE 3-3:
ELECTRODE LAYOUT
The electrode layout is based on a four-layer PCB design using FR4 material.
Three functional layers are used:
- Layer 1 (Top): Rx electrodes
- Layer 3: Tx electrode and Rx feeding lines
- Layer 4 (Bottom): Ground
Layer 2 is not used.
935 µm
PCB LAYER STACK
Rx Electrode: 18 µm
Top layer
Not Used: 35 µm
2nd layer
0.15 mm
Tx: 35 µm
540 µm
1.546 mm
FIGURE 3-4:
Tx
3rd layer
0.25 mm
Bottom
layer
GND: 18 µm
Rx feeding line
The design of Rx electrodes includes four frame electrodes and one center electrode,
as shown in Figure 3-3. The frame electrodes are named according to their cardinal
directions - north, east, south and west. The dimensions of the four Rx frame electrodes define the maximum sensing area. The center electrode is structured (hatched)
to get a similar input signal level as the four frame electrodes.
The Tx electrode spans over the complete area underneath the Rx electrodes. It is
structured to reduce the capacitances between Rx and Tx (CRxTx). The area below the
center electrode covers 50% of the copper plane, the area around only 20%.
The Rx feeding lines are also routed in the third layer. They are embedded into the Tx
electrode (refer to Figure 3-3 and Figure 3-4). This supports shielding of the feeding
lines.
Dimensions are given in Table 3-1.
2013 Microchip Technology Inc.
DS41685A-page 19
MGC3130 – Sabrewing Single-Zone Evaluation Kit User’s Guide
In a target system design the GND layer is not required. It is added for the Sabrewing
Board as a shielding layer and shall simulate the presence of static components which
are placed in the target device underneath the sensing electrodes. In order to keep
ground capacitances (CTxGND, CRxGND) below 1nF, the GND layer is structured in a
way that 40% of the area is covered with copper.
Note 1:
2:
Please refer to the “MGC3130 Single-Zone 3D Gesture Controller Data
Sheet” (DS41667) for the electrodes equivalent circuitry, capacitances
(CRxTx, CRxGND, CTxGND) and their typical values.
The integration of GestIC® technology into a target device does not require
the GND layer. If no shielding is needed, or if the device already contains
grounded planes, a two layer design is preferable.
TABLE 3-1:
ELECTRODE DESIGN
Length
Width
Coverage
Horizontal Electrodes (Rx)
131.7 mm
5 mm
solid
Vertical Electrodes (Rx)
98.7 mm
5 mm
solid
Center Electrode (Rx)
118 mm
68.7 mm
5% structured
Tx Electrode (refer to Figure 3-3)
Part I (under center Electrode)
Part II (outside Part I)
148 mm
118 mm
148 mm
98.7 mm
68.7 mm
98.7 mm
50% structured
20% structured
Ground Area
180 mm
126.6 mm
40% structured
The sensing area of the Sabrewing board, depicted in Figure 3-5, is defined as the area
enclosed by the four frame electrodes. Depending on the parameterization, it can differ
from the physical dimensions of the electrodes.
FIGURE 3-5:
SENSING AREA
North electrode
Center electrode
East electrode
West electrode
Sensing Area
South electrode
DS41685A-page 20
2013 Microchip Technology Inc.
MGC3130 – Sabrewing Evaluation Board
3.4
I2C™ TO USB BRIDGE
The communication between the MGC3130 and the host PC is controlled by the I2C to
USB Bridge section. The message exchange is handled by Microchip’s PIC18F14K50
USB microcontroller. The PIC18F14K50 is also used to indicate the communication
status on a LED bar and to control MGC3130 hardware Reset.
The board is powered via the USB port. Microchip’s Low Dropout (LDO) Voltage
Regulator MCP1801 is used to transform the 5V USB power to 3.3V required for the
MGC3130 and the PIC18F14K50.
The LEDs indicate the following:
• POWER – signals that the Sabrewing board is powered (3.3V)
• LED1/2 – blink simultaneously to indicate that there is no data transfer on the USB
port
• LED1/2 – blink alternating to indicate that there is data transfer on the USB port
• LED 5 – is on when there is data on the I2C bus
• LEDs 0, 3, 4, 6 and 7 are not used
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MGC3130 – Sabrewing Single-Zone Evaluation Kit User’s Guide
NOTES:
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2013 Microchip Technology Inc.
MGC3130 – SABREWING
SINGLE-ZONE EVALUATION KIT
USER’S GUIDE
Chapter 4. Troubleshooting
POWER LED DOES NOT ILLUMINATE
In case the power LED does not illuminate, it is likely the board is not powered.
Possible Solutions:
1. Check the board is connected to your PC’s USB port.
2. Change the USB cable or use a different USB port on your PC.
3. Check if the PC is switched on.
LED 1 AND LED 2 BLINK SIMULTANEOUSLY
When LED 1 and LED 2 blink simultaneously, there is no data transfer on the USB port.
Possible Solutions:
1. Make sure the Windows CDC driver is installed (refer to Section 2.3 “Step 2:
Install Windows CDC Driver”).
2. Reconnect the board by unplugging and plugging in again the USB connection.
SIGNAL STREAMING STOPS
Signal stream in Aurea GUI stops when there is no approach towards the sensing area.
This behavior is intended. When using the Aurea GUI, the Wake-up on Approach
feature is automatically enabled.
Possible Solutions:
Disable the Wake-up on Approach feature in the Real-Time Control bar of Aurea by
unchecking the Approach Detection/Power Saving checkbox for continuous signal
streaming.
SIGNAL MATCHING PARAMETERS MISMATCHED BY USER
Signal matching parameters have been mismatched and accidently stored into the
Flash.
Possible Solutions:
1. Perform “Autoparameterization” in the Aurea Setup tab. Make sure there is no
hand approach towards the electrodes during autoparamterization process.
2. Restore the default Signal Matching parameters by re-flashing the original
MGC3130 GestIC® library file refer to the “MGC3130 – Aurea Graphical User
Interface User’s Guide (DS41681).
2013 Microchip Technology Inc.
DS41685A-page 23
MGC3130 – Sabrewing Single-Zone Evaluation Kit User’s Guide
NOTES:
DS41685A-page 24
2013 Microchip Technology Inc.
MGC3130 – SABREWING
SINGLE-ZONE EVALUATION
KIT USER’S GUIDE
Appendix A. Schematics
A.1
INTRODUCTION
This appendix contains the MGC3130 Sabrewing Evaluation Board schematic and Bill of
Material.
A.2
BILL OF MATERIAL
TABLE A-1:
SABREWING SINGLE-ZONE EVALUATION BOARD BILL OF MATERIAL
Qty.
Description
Name
1
Connector, Mini USB 5-Pin Type B, SMD
BU1
2
Capacitor, 100nF, 10%, X7R, SMD 0402
C1, C2
1
Capacitor, 220nF, 10%, X5R, SMD 0402
C3
2
Capacitor, 1µF, 10%, X5R, 10V, SMD 0402
1
Capacitor, 4.7µF, 20%, X5R, 6.3V, SMD 0402
C6
1
Capacitor, 10 µF, 20%, X5R, 6.3V, SMD 0603
C7
2
Capacitor, 18pF, 5%, NP0, 50V, SMD 0402
9
LED, 571nm green clear, 0603 SMD
1
Diode, Zener, 500mW, 3.8V, SMD
D3
1
IC, MGC3130 3D Tracking and Gesture Controller, 28-Pin QFN
IC1
1
IC, MCP1801T LDO, Voltage Regulator, 2.3V, 150 mA, 5-Pin SOT-23
IC2
1
IC, PIC18F14K50 USB Flash Microcontroller, 20-Pin SSOP
IC3
9
Resistor, 1kΩ, 1%, 1/16W, SMD 0402
2
Resistor, 1.8kΩ, 1%, 1/16W, SMD 0402
R6, R7
3
Resistor, 10kΩ, 1%, 1/16W, SMD 0402
R11, R13, R21
1
Resistor, 150kΩ, 1%, 1/16W, SMD 0402
R16
6
Resistor, 0Ω, 1%, 1/16W, SMD 0603
2013 Microchip Technology Inc.
C4, C5
C9, C10
D2, D4, D5, D6, D7, D8, D9, D10, D11
R1, R2, R3, R4, R5, R8, R9, R12, R14
R22, R23, R24, R32, R33, R35
DS41685A-page 25
MGC3130 – Sabrewing Single-Zone Evaluation Kit User’s Guide
TABLE A-1:
SABREWING SINGLE-ZONE EVALUATION BOARD BILL OF MATERIAL
5
Resistor, 1kΩ, 1%, 1/16W, SMD 0603
1
Switch, Push Button, 0,05A@12V, 6mm x 6 mm
1
Crystal, 12 MHz, 18pF, SMD
1
Acrylic Glass, 180 x 116.5 x 2 mm, Drill 3.2 mm
4
Push-in Rivets, 3.0 x 1.0-4.0, Nylon-66, natural
A.3
R25, R26, R27, R28, R29
SW1
XTAL1
BOARD SCHEMATIC AND LAYOUT
FIGURE A-1:
SABREWING SCHEMATIC PART I: MGC3130 REFERENCE CIRCUITRY
Vgestic
IC1
MGC3130
R26
1K
South EI.
R27
1K
North EI.
R28
1K
East EI.
R29
1K
7
Center EI.
R25
1K
8
15
TXD
IS2
NC
4
RX0
NC
NC
5
RX1
EIO0
6
EIO1
RX2
EIO2
EI03
low
R21
16
GND
West EI.
R10
high
MCLR
3D Tracking and Gesture Controller
25
10K
n.P. Vgestic
17
R17
high
low
R15
18
n.P.
12
GND
R33
0R
n.P. Vgestic
EIO0
n.P. Vgestic
13
14
EIO2
19
EIO3
R18
high
low
R11
10K
GND
TX EI.
MCLR
R13
10k
24
RX3
20
SDA0
SI0
RX4
SI1
SI2
26
NC
3
9
GND
GND
D1
L1
n.P.
n.P.
GND
10
GND
SCL0
22
SDA1
23
SCL1
EXP
VCAPD
11
C3
220nF
1
VSS3
VCAPA
VSS2
VCAPS
VINDS
2
27
C6
4.7uF/6.3V
28
VSS1
VDD
SI3
21
29
GND
GND
0R
R35
C8
n.P.
C1
100nF
GND
GND
0R
Vgestic
2
1
R32
K1
n.p. = not populated
DS41685A-page 26
Chip Current
Measurement
2013 Microchip Technology Inc.
SABREWING SCHEMATIC PART II: I2C TO USB BRIDGE
FIGURE A-2:
2
C10
18pF
R34
n.P.
EIO2
RA0/D+/PGD
RA4/AN3/OSC2CLKOUT
RA3
4
RA3/MCLR/VPP
RC5
5
RC5/CCP1/PA1/T0CKI
RC4
6
RC3
7
RA1/D_/PGC
VUSB
RC0/AN4/C12IN+/INT0/VREF+
RC4/P1B/C12OUT/SRQ
RC3/AN7/P1C/C12IN3-/PGM
8
RC6/AN8/SS/T13CKI/T1OSCI
RC7
9
RC7/AN9/SDO/T1OSCO
RB7
10
BU1
USB_B Mini
VCC
D-
V_USB
2
1
RA3
1
Vpic
2
USB_D+
18
VPP
VDD
GND
4
ICSPDAT
5
USB_D-
17
K7
3
USB_D-
ICSPCLK
6
N/C
Vpic
16
RC1
RC2/AN6/P1D/C12IN2-/CVREF/INT2
14
RC2
RB4/AN10/SDI/SDA
13
SDA0
RB6/SCK/SCL
ICSP™
USB_D+
RC1/AN5/C12IN1-/INT1/VREF
RB5/AN11/RX/DT
3
GND
15
RB7/TX/CK
D+
Shield
20
19
4
GND
GND
VSS
3
MCLR
GND
VDD
RA5/OSC1/CLKIN
150K
R16
Vpic
GND
1
XTAL1
12.00 MHz
IC3
PIC18F14K50
GND
C5
GND
GND
C9
18pF
1uF/10V
Vpic
5
GND GND
C2
100nF
GND
I2C™ to USB Bridge
12
RB5
11
SCL0
Vgestic
R6
1.8K
R7
1.8K
RESET
SDA0
SCL0
EIO0
GND
RB7
C4
1uF/10V
1 K5
+
2
-
GND GND
K5 = External Power
Supply for Board
(remove R22)
RC3
RC5
2013 Microchip Technology Inc.
D5
LST-C191KGKT
D4
LST-C191KGKT
R1
1K
n.p. = not populated
D6
LST-C191KGKT
R2
1K
RC4
D7
LST-C191KGKT
R4
1K
K6 = External Power
Supply for GestIC®
(remove R23)
2
3
4
5
6
7
V_USB
RC7
GND
GND
GND
LST-C191KGKT
GND
C7
1
2 10UF/6.3V
GND
2
GND
VOUT
1
GND
1
VIN
/SHDN 3
LST-C191KGKT
D8
R8
1K
5
RC1
R22
0R
0
GND
D9
R3
1K
GND
K6
LST-C191KGKT
R9
1K
IC2
MCP1801T_3302I/OT
Vgestic
+
-
RC2
R5
1K
R24
0R
R23
0R
D3
BZT55C3V6
D10
GND
Power Supply
Vpic
LST-C191KGKT
R12
1K
RB5
Power
GND
R14
1K
D11
GND
LST-C191KGKT
GND
LED-Indication
Vgestic
D2
DS41685A-page 27
MGC3130 – Sabrewing Single-Zone Evaluation Kit User’s Guide
FIGURE A-3:
DS41685A-page 28
SABREWING SINGLE-ZONE EVALUATION BOARD LAYOUT TOP LAYER
2013 Microchip Technology Inc.
MGC3130 – SABREWING
SINGLE-ZONE EVALUATION
KIT USER’S GUIDE
Appendix B. Sensitivity Profile and Capacities
B.1
INTRODUCTION
This appendix contains the sensitivity profile and the electrode capacities of the MGC3130
Sabrewing Evaluation Board.
B.2
SENSITIVITY PROFILES
FIGURE B-1:
SENSITIVITY PROFILE FROM WEST TO EAST
West -> East
300
Dignal Deviation / Digits
250
206 211
201 197
188
200
168
155
SD North
135
150
115
83
100
50
13
17
24
29
41
SD East
102
52
SD South
71
61
SD West
44
30
SD Center
21
16
12
0
Distance to West
SD: Signal Deviation
2013 Microchip Technology Inc.
DS41685A-page 29
MGC3130 – Sabrewing Single-Zone Evaluation Kit User’s Guide
FIGURE B-2:
300
SENSITIVITY PROFILE FROM NORTH TO SOUTH
North -> South
274
274
240
Signal Deviation / Digits
250
230
199
193
200
224
170
151
150
SD North
132
96
100
SD East
104
SD South
74
66
49
SD West
49
50 34
SD Center
34
0
Distance to North
SD: Signal Deviation
B.3
ELECTRODE CAPACITIES
TABLE B-1:
CAPACITIES
Channel
CRxGND
CRxTx
West
19 pF
24 pF
North
18 pF
25 pF
East
18 pF
26 pF
South
20 pF
32 pF
Center
12 pF
113 pF
CTxGND = 885 pF
DS41685A-page 30
2013 Microchip Technology Inc.
MGC3130 – SABREWING
SINGLE-ZONE EVALUATION
KIT USER’S GUIDE
Appendix C. Driver Installation Manual
The following steps show how to install the Microchip CDC driver through the device
manager of Windows 7.
1. Open Device Manager
While the Sabrewing Evaluation Board is connected to your PC press Start, right-click
on Computers and select Manage. This will bring up the Computer Management
window shown in Figure C-1. On the left sidebar, select Device Manager.
FIGURE C-1:
COMPUTER MANAGEMENT
2. Select Device
Right Click on GestIC Bridge and select Update Driver Software.
3. Select Search Method
The window shown in Figure C-2 will open. Choose Browse my Computer for driver
software.
2013 Microchip Technology Inc.
DS41685A-page 31
MGC3130 – Sabrewing Single-Zone Evaluation Kit User’s Guide
FIGURE C-2:
UPDATE DRIVER SOFTWARE
4. Locate Driver
Click Browse and navigate to the driver files on your local drive (Figure C-3). Press
Next and the driver will be installed.
FIGURE C-3:
BROWSE FOR DRIVER SOFTWARE
5. Verify Communication
The driver is properly installed and the communication between the PC and the
Sabrewing Evaluation Board is successfully established when LED 1 and LED 2 blink
alternatingly.
DS41685A-page 32
2013 Microchip Technology Inc.
MGC3130 – SABREWING
SINGLE-ZONE EVALUATION
KIT USER’S GUIDE
Appendix D. Glossary
Term
Definition
AFE
Analog front end
Application Host
PC or embedded controller which controls the MGC3130
Aurea
MGC3130 PC control software with graphical user interface
Colibri Suite
Embedded DSP suite within the GestIC® Library
Deep Sleep
MGC3130 Power-saving mode
E-field
Electrical field
Frame Electrodes
Rectangular set of 4 electrodes for E-field sensing
GestIC® Technology
Microchip’s patented technology providing 3D free-space gesture recognition utilizing
the principles of electrical near-field sensing
GestIC® Library
Includes the implementation of MGC3130 features and is delivered as a binary file
preprogrammed on the MGC3130
Gesture Recognition
Microchip’s stochastic HMM classifier to automatically detect and classify hand
movement patterns
Gesture Set
A set of provided hand movement patterns
Hand Brick
Copper coated test block (7 cm x 4 cm x 4 cm)
HMM
Hidden Markov Model
MGC3130
Single Zone 3D Gesture Sensing Controller
Position Tracking
GestIC technology feature
Sabrewing
MGC3130 evaluation board
Self Wake-Up
MGC3130 Power-saving mode
Sensing Zone
The three dimensional area near the electrodes in which tracking/gesture recognition
can be performed
Signal Deviation
Term for the delta of the sensor signal on approach of the hand versus non-approach
Spacer Brick
Spacer between the sensor layer and hand brick
(styrofoam block 4 cm x 4 cm x h with h= 1 / 2 / 3 / 5 / 8 / 12 cm)
SPU
Signal Processing Unit
Approach Detection
GestIC technology feature: Power-Saving mode of the MGC3130 with approach
detection
2013 Microchip Technology Inc.
DS41685A-page 33
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DS41685A-page 34
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11/29/12
2013 Microchip Technology Inc.