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Table of Contents
User’s Guide
OPT4001YMNEVM User's Guide
ABSTRACT
This user’s guide describes the characteristics, operation, and use of the OPT4001YMNEVM evaluation module.
It discusses how to set up and configure the software and hardware, and reviews various aspects of the program
operation. Throughout this document, the terms evaluation board, evaluation module, and EVM are synonymous
with the OPT4001YMNEVM. This document also includes an electrical schematic, printed circuit board (PCB)
layout drawings, and a parts list for the EVM.
Table of Contents
1 Overview..................................................................................................................................................................................3
1.1 OPT4001YMNEVM Kit Contents....................................................................................................................................... 3
1.2 Related Documentation from Texas Instruments............................................................................................................... 4
2 OPT4001YMNEVM Hardware................................................................................................................................................. 5
2.1 Theory of Operation for the OPT4001YMNEVM................................................................................................................6
2.2 OPT4001YMNEVM Hardware Overview........................................................................................................................... 6
3 OPT4001YMNEVM Software.................................................................................................................................................. 7
3.1 Hardware Requirements.................................................................................................................................................... 7
3.2 Software Installation...........................................................................................................................................................7
3.3 Typical OPT4001YMNEVM Hardware Setup................................................................................................................... 11
3.4 Launching the OPT4001EVM Software........................................................................................................................... 13
3.5 OPT4001EVM Software Operation.................................................................................................................................. 14
4 Schematic, PCB Layout, and Bill of Materials................................................................................................................... 19
4.1 Flex Coupon Board.......................................................................................................................................................... 19
4.2 Rigid Coupon Board.........................................................................................................................................................21
4.3 Motherboard.....................................................................................................................................................................24
5 Troubleshooting....................................................................................................................................................................28
5.1 Microsoft Windows 7 Manual Driver Installation.............................................................................................................. 28
List of Figures
Figure 1-1. Hardware Included with OPT4001YMNEVM Kit....................................................................................................... 3
Figure 2-1. EVM Hardware Setup................................................................................................................................................5
Figure 3-1. OPT4001YMNEVM Software-Installation File...........................................................................................................7
Figure 3-2. OPT4001YMNEVM Software-Installation Launch.....................................................................................................8
Figure 3-3. OPT4001YMNEVM Software-Installation Prompts................................................................................................... 8
Figure 3-4. OPT4001YMNEVM Software-Installation Prompts................................................................................................... 9
Figure 3-5. OPT4001YMNEVM Software-Installation Prompts................................................................................................... 9
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Trademarks
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Figure 3-6. OPT4001YMNEVM Software-Installation Prompts................................................................................................. 10
Figure 3-7. OPT4001YMNEVM Software-Installation Prompts................................................................................................. 10
Figure 3-8. OPT4001YMNEVM Software-Installation Prompts..................................................................................................11
Figure 3-9. Typical Hardware Connection..................................................................................................................................11
Figure 3-10. Typical Response After Connecting OPT4001YMNEVM to the Computer........................................................... 12
Figure 3-11. OPT4001 Main Operation Screen......................................................................................................................... 13
Figure 3-12. Hardware Error Message...................................................................................................................................... 13
Figure 3-13. GUI Capture Running............................................................................................................................................14
Figure 3-14. Latte Scripts Window.............................................................................................................................................16
Figure 3-15. Registers View.......................................................................................................................................................17
Figure 4-1. OPT4001YMNEVM construction.............................................................................................................................19
Figure 4-2. OPT4001 Flex Coupon Board Schematic............................................................................................................... 19
Figure 4-3. PCB Top Layer........................................................................................................................................................ 20
Figure 4-4. PCB Bottom Layer...................................................................................................................................................20
Figure 4-5. PCB Top-Layer Assembly Drawing......................................................................................................................... 20
Figure 4-6. PCB Bottom-Layer Assembly Drawing....................................................................................................................20
Figure 4-7. OPT4001 Coupon Rigid Board Schematic..............................................................................................................21
Figure 4-8. PCB Top Layer........................................................................................................................................................ 22
Figure 4-9. PCB Bottom Layer...................................................................................................................................................22
Figure 4-10. PCB Top-Layer Assembly Drawing....................................................................................................................... 22
Figure 4-11. PCB Bottom-Layer Assembly Drawing.................................................................................................................. 23
Figure 4-12. OPTMBEVM Schematic........................................................................................................................................ 24
Figure 4-13. PCB Top Layer...................................................................................................................................................... 25
Figure 4-14. PCB Bottom Layer.................................................................................................................................................25
Figure 4-15. PCB Top-Layer Assembly Drawing....................................................................................................................... 26
Figure 4-16. PCB Bottom-Layer Assembly Drawing..................................................................................................................26
Figure 5-1. OPT4001YMNEVM on Microsoft® Windows® 7 With Drivers not Installed............................................................. 28
Trademarks
Windows 10®, Microsoft®, and Windows® are registered trademarks of Microsoft Corporation.
All trademarks are the property of their respective owners.
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Overview
1 Overview
The OPT4001 is an ambient light sensor (ALS) with a digital output integrated circuit. It uses a two-wire interface
that works with the I2C protocol making it ideal for many applications. The OPT4001YMN is the picostar package
version of the OPT4001 device. The picostar package achieves very small size and thickness and orients
with the photodiode facing down and senses light through a cutout in the board. This requires the sensor be
soldered to a flex PCB in most applications to maximize the field of view of the sensor. The OPT4001YMNEVM
is a platform for evaluating the performance of the OPT4001 under various conditions. The OPT4001YMNEVM
consists of two PCBs. The first is the OPTMB EVM board, which is a motherboard. This board communicates
with a computer through USB connection and provides power and sends and receives appropriate digital signals
with the OPT4001 IC. The motherboard will relay USB commands from the EVM GUI software running on
the PC to the OPT4001 IC through I2C. The second is the OPT4001YMN coupon board, which contains the
OPT4001YMN and its support circuitry. The coupon board consists of a flex PCB soldered to a rigid board. This
allows the coupon to be easily plugged and unplugged as the rigid board adds strength to the flex board.
1.1 OPT4001YMNEVM Kit Contents
Table 1-1 summarizes the contents of the OPT4001YMNEVM kit. Figure 1-1 shows the included hardware.
Contact the Texas Instruments Product Information Center nearest you if any component is missing. It is highly
recommended that you also check the OPT4001YMN product folder on the TI web site at www.ti.com to verify
you have the latest versions of the released software.
Table 1-1. OPT4001YMNEVM Kit Contents
Item
Quantity
OPT4001 coupon board
(Installed on OPTMBEVM)
1
OPTMBEVM board
1
USB type A to type C cable
1
Figure 1-1. Hardware Included with OPT4001YMNEVM Kit
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Overview
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1.2 Related Documentation from Texas Instruments
The following documents provide information regarding Texas Instruments' integrated circuits used in the
assembly of the OPT4001YMNEVM. This user's guide is available from the TI web site under literature number
SBOU278. Any letter appended to the literature number corresponds to the document revision that is current at
the time of the writing of this document. The latest revision can be found by clicking the link Table 1-2 and is also
available from the TI web site, the Texas Instruments' Literature Response Center at (800) 477-8924, and the
Product Information Center at (972) 644-5580. When ordering, identify the document by both title and literature
number.
Table 1-2. Related Documentation
4
Document
Literature Number
OPT4001 product data sheet
SBOS993
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OPT4001YMNEVM Hardware
2 OPT4001YMNEVM Hardware
Figure 2-1 shows the system setup for the OPT4001YMNEVM. The computer runs the graphical user interface
(GUI) software that communicates with the OPTMBEVM board over a USB connection. The OPTMBEVM has a
USB Type C port and ships with a USB-C to USB-A cable. The OPTMBEVM board acts as a bridge between the
software running on the PC and the OPT4001YMN coupon board. The MSP430 on the OPTMBEVM receives
USB commands from the PC and communicates with the OPT4001YMN over I2C.
Figure 2-1. EVM Hardware Setup
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2.1 Theory of Operation for the OPT4001YMNEVM
The OPT4001 coupon consists of the OPT4001 IC, decoupling capacitor, and 8 pins. The pins create
connections for the power and I2C signals between the coupon and the EVM motherboard. For evaluation
purposes the coupon can be removed from the motherboard to be used with other platforms. The motherboard
also has an unpopulated 5-pin header footprint for easy access to the supply, ground, and I2C lines.
2.2 OPT4001YMNEVM Hardware Overview
The EVM ships with the coupon plugged into the motherboard. If not already assembled, the basic hardware
setup for the OPT4001YMNEVM involves plugging the coupon board into the motherboard socket. Take special
care to make sure the coupon is oriented correctly as shown in Figure 1-1. Also note the warnings below.
Specifically that the flex part of the coupon should not be pressed on. If unplugging and replugging the coupon
into the motherboard, the coupon should only be handled by the rigid part and no part of the flex should be
pressed on. Then connect the USB cable.
CAUTION
This EVM contains a flex PCB on which the OPT4001 IC is mounted. Flex PCBs are sensitive and
should be handled with extra care. Special caution should be give not to press on the flex PCB as
this can cause the EVM to break.
CAUTION
Many of the components on the OPT4001YMNEVM are susceptible to damage by electrostatic
discharge (ESD). Customers are advised to observe proper ESD handling precautions when
unpacking and handling the EVM, including the use of a grounded wrist strap at an approved ESD
workstation.
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OPT4001YMNEVM Software
3 OPT4001YMNEVM Software
This section describes the installation and operation of the OPT4001YMNEVM software. The
OPT4001YMNEVM uses the TI Latte software, which is available for download on the EVM page.
3.1 Hardware Requirements
The OPT4001EVM software has been tested on the Windows 10® operating system (OS) with United States
regional settings. The software should function correctly on other Windows operating systems.
3.2 Software Installation
The OPT4001YMNEVM software is available through the OPT4001YMNEVM Product Folder on the TI web site
(www.ti.com). To install the software to your computer, navigate to the OPT4001YMNEVM software, and open
the installer directory. Launch the OPT4001YMNEVM installation file, OPT4001YMNEVM_GUI.exe, as shown in
the figure below.
Figure 3-1. OPT4001YMNEVM Software-Installation File
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The OPT4001EVM software then begins the installation process, as shown in Figure 3-2.
Figure 3-2. OPT4001YMNEVM Software-Installation Launch
Follow the prompts as shown in Figure 3-3 to Figure 3-8 to install the OPT4001YMNEVM software.
Figure 3-3. OPT4001YMNEVM Software-Installation Prompts
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Figure 3-4. OPT4001YMNEVM Software-Installation Prompts
Figure 3-5. OPT4001YMNEVM Software-Installation Prompts
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Figure 3-6. OPT4001YMNEVM Software-Installation Prompts
Figure 3-7. OPT4001YMNEVM Software-Installation Prompts
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Figure 3-8. OPT4001YMNEVM Software-Installation Prompts
The OPT4001EVM GUI software is now installed.
3.3 Typical OPT4001YMNEVM Hardware Setup
Plug the male USB-C cable to the OPTMBEVM board and then plug the male USB-A cable into the computer.
The green light will light up on the EVM as shown in Figure 3-9.
Figure 3-9. Typical Hardware Connection
When the EVM is plugged into the USB port of the computer it will enumerate as two com ports. This will show
up in the Windows device manager as show in Figure 3-10.
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Figure 3-10. Typical Response After Connecting OPT4001YMNEVM to the Computer
Connect the EVM via USB to the PC. If Windows shows a notification that a driver is not found for the device
connected, see the instructions to manually install drivers in Section 5.1 before proceeding.
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3.4 Launching the OPT4001EVM Software
With the OPT4001YMNEVM properly connected, launch the Latte EVM GUI software from the Windows Start
menu. The software launches with a screen similar to that shown in Figure 3-11.
Figure 3-11. OPT4001 Main Operation Screen
If the message shown in Figure 3-12 appears when the OPT4001EVM GUI software is launched, this means
that the EVM motherboard was not detected. Check the USB connection and that the motherboard appears in
the device manager as shown in Section 3.3. A green light will appear on the motherboard if it is receiving power
from the PC and the GUI "start capture" button has not been enabled.
Figure 3-12. Hardware Error Message
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3.5 OPT4001EVM Software Operation
This section primarily discusses how to operate the OPT4001EVM software. The GUI has a primary window
that is used to configure and read from the OPT4001YMNEVM, along with two other windows that are used to
access different features of the OPT4001YMNEVM. Basic GUI functionality and a description of the tabs are
also presented in this section.
3.5.1 Getting Started
To quickly start using the device, click the Operation Select drop-down menu and select Continuous to bring
the device out of power down mode. Then click Start Capture to begin data capture. The green LED on the
motherboard will turn off. Lux data will appear above the lux plot as shown. The plot will also start to populate
with the device lux readings.
Figure 3-13. GUI Capture Running
If the GUI is not responsive, check the other Latte scripts window, which is minimized by default. If the message
Operation I2C Register Read for command [REGRx01] Failed is displayed this means that the OPT4001 IC or
coupon is not detected by the motherboard. Ensure the coupon is plugged in and properly oriented.
3.5.2 Feature Descriptions
Lux Plot
In the center of the GUI window you will see a plot showing the lux reading from the device on the y-axis and
the sample number on the x-axis. The plot settings can be tweaked by right clicking on the plot. The x-axis and
y-axis options under the right-click menu allow the range of x and y-axes displayed to be changed. There is also
an auto option that will dynamically change the range to match the data. Scrolling will zoom in to or zoom out
from the plot. Left-clicking and dragging will display a yellow rectangle that will, upon releasing the mouse, zoom
the data to the rectangle drawn. Right-clicking and dragging up or down zooms the y-axis. Right-clicking and
dragging right or left will zoom the x-axis. Right clicking and selecting View All will reset the view.
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Drop-down Menus
At the top left of the plot are two drop-down menus.
The operation select drop-down menu allows device operating mode to be switched between power down and
continuous capture modes. The one shot mode of the device is not exposed by the EVM GUI.
The mode select drop-down menu changes the device gain range setting mode. The device supports automatic
gain control (ACG), which is the recommended mode setting for most use cases, or the gain range of the device
can be selected manually using this drop-down menu.
The device supports twelve conversion times from 0.6 ms to 800 ms, which can be selected using the respective
drop-down menu.
The display sample count selects how many samples are displayed on the x-axis of the plot.
Save to file
The set save to file name check box allows the data captured in the GUI to be dumped to a CSV file. Clicking
this check box will display a windows file selector screen. Select the directory to store the CSV and set the name
for the CSV. After clicking save the GUI will wait for you to click the start capture button to start saving data and
subsequently it will wait for a click on the stop capture button to copy all the data into the indicated CSV file.
When capturing data with save enabled, the GUI will initially dump the data to temporary .npy files. After clicking
stop capture this data is written over to the CSV file and .npy files are removed.
Mean, Std, and the Blue Slider
There is a blue slider on the lux plot shown on the right side of the plot in the figure. Mean and Std columns in
the table where capture data is displayed are calculated from only the data within the blue slider. Left-clicking on
the middle of this slider and dragging moves the slider. Left-clicking on the edge of either side of the slider and
dragging will adjust the size of the slider. This allows the mean and standard deviation of the distance, phase,
and amplitude to be computed for any continuous portion of the displayed data. If capture is running, this data
updates in real-time along with the data in the Live column.
Scripts Window
When Latte is launched, the GUI window appears front and center. However, there is a second window that
is minimized at launch. This is the scripts window and it exposes some more advanced features of the Latte
platform as shown in Figure 3-14.
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Figure 3-14. Latte Scripts Window
The scripts window also provides access to the device registers view that displays the stored value of the device
registers and allows them to be changed directly. Launch the registers view by double clicking on the Registers
View button under the Device List box on the right side of the screen.
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Figure 3-15. Registers View
Overview of Device Registers
Registers x00 and 0x01 are the result registers and provide the output data from the device as an exponent and
mantissa value indicated as e and r in the register view. The mantissa is split between registers 0x00 and 0x01
as R_MSB and R_LSB. A sample counter (C) and CRC check bits (X) are also contained in register 0x01.
Registers 0x0A, 0x0B, and 0x0C are the configuration registers and provide feedback about the state of the
device; the bit names and full descriptions are shown in the OPT4001 data sheet. Each of the read-only status
bits are greyed out and cannot be changed.
Registers x08 and x09 allow low and high limits, respectively, to be set. These registers are used in certain
interrupt reporting modes.
The device ID is contained in register 0x11.
Additional Features of the Scripts Window
Hidden IDE Window
The Latte program runs a number of Python scripts in the background to capture and display data from the
EVM. These scripts allow for initialization of the device including loading calibration data from the EVM flash
memory, launching a live view window with measurement plot and readings, and additional functionality such as
reading from the flash and selecting a specific LED current for the device to use. For advanced users or users
looking for more flexibility when using the OPT3101EVM, these Python scripts are available in an integrated
development environment (IDE) window that is minimized when TI-Latte is launched. The IDE window can be
used to customize the existing scripts or write new scripts.
After launching Latte, expand the OPT4001YMN directory on the left side of the window under Files by clicking
the triangle to the left of the directory name. This displays the OPT4001YMNEVM folder. Further expanding the
OPT4001YMNEVM folder will display all the example scripts as shown in Figure 3-14.
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devInit.py
Open the devInit.py script by clicking on the corresponding file in the OPT4001YMNEVM folder on the left side
of the screen. This displays the contents of the script on the center of the window. With devInit.py still selected in
TI-Latte, click Run>Buffer from the top menu bar of TI-Latte (or press F5) to run the script. Once completed, the
live-view GUI is opened in a new window. More details on the live-view GUI are given in the following section.
Additional info is also displayed in the log window in the lower left corner of the main window.
04-launchGUI.py
A live-view GUI window is launched when running the devInit.py script. This allows data from the OPT4001 to be
viewed on a graph in real-time. The GUI is created in the launchGUI.py example script. When running devInit.py,
the launchGUI.py script is automatically ran. However, if the GUI window is closed it can be re-launched by
directly running the launchGUI.py script. To do this, select the launchGUI.py script and click Run>Buffer or press
F5. Figure 3-13 shows the live GUI plot.
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Schematic, PCB Layout, and Bill of Materials
4 Schematic, PCB Layout, and Bill of Materials
This EVM consists of 3 boards as shown in Figure 4-1. The flex coupon board is a flex PCB with OPT4001
IC and cutout for optimal sensor field of view. This flex board is soldered onto a rigid coupon board for added
stability. The rigid coupon board contains 8 pins which allow it to plug into a socket on the motherboard. The
motherboard contains an MSP430 microcontroller and plugs into a PC through the provided USB cable. This
section contains the schematics, layout, and bill of materials for these 3 boards.
Figure 4-1. OPT4001YMNEVM construction
4.1 Flex Coupon Board
4.1.1 Schematic
Figure 4-2 shows the schematic of the OPT4001YMN flex coupon board.
Figure 4-2. OPT4001 Flex Coupon Board Schematic
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4.1.2 PCB Layout
Figure 4-3 and Figure 4-4 show the top and bottom PCB layers, respectively, of the flex coupon board. Figure
4-5 and Figure 4-6 show the assembly drawings of the top and bottom PCB layers, respectively.
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Figure 4-3. PCB Top Layer
Figure 4-4. PCB Bottom Layer
Figure 4-5. PCB Top-Layer Assembly Drawing
Figure 4-6. PCB Bottom-Layer Assembly Drawing
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4.1.3 Bill of Materials
Table 4-1 lists the bill of materials for the OPT4001YMN coupon board.
Table 4-1. OPT4001YMN Flex Coupon Board Bill of Materials
Designator
Quantity
Description
Part Number
Manufacturer
1
Ambient Light Sensor (ALS) With
Excellent AngularIR Rejection
OPT3004DTS
Texas Instruments
U1
4.2 Rigid Coupon Board
4.2.1 Schematic
Figure 4-7 shows the schematic of the OPT4001YMN coupon rigid board. C1 is a bypass capacitor for device
VDD.
Figure 4-7. OPT4001 Coupon Rigid Board Schematic
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4.2.2 PCB Layout
Figure 4-8 and Figure 4-9 show the top and bottom PCB layers, respectively, of the coupon rigid board. Figure
4-10 and Figure 4-11 show the assembly drawings of the top and bottom PCB layers, respectively.
Figure 4-8. PCB Top Layer
Figure 4-9. PCB Bottom Layer
Figure 4-10. PCB Top-Layer Assembly Drawing
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Figure 4-11. PCB Bottom-Layer Assembly Drawing
4.2.3 Bill of Materials
Table 4-2 lists the bill of materials for the OPT4001YMN coupon board.
Table 4-2. OPT4001YMN Rigid Coupon Board Bill of Materials
Designator
Quantity
Description
Part Number
Manufacturer
C1
1
CAP, CERM, 1 uF, 10 V, +/- 10%,
X7S, AEC-Q200 Grade 1, 0402
GCM155C71A105KE38D
MuRata
J1, J2, J3, J4, J5, J6, J7, J8
8
PC Pin Terminal Connector Through
Hole Gold 0.017" (0.43mm) Dia
3121-2-00-15-00-00-08-0
Mill-Max
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4.3 Motherboard
4.3.1 Schematic
Figure 4-12 shows the complete schematic of the OPTMBEVM motherboard. The schematic is split into three
sections: connector, MSP430, and socket. A USB type C connector is used to interface with the PC. The
MSP430 microcontroller allows the PC to interface with the OPT3004DTS through I2C. The coupon board
containing the OPT4001 plugs into the motherboard through the socket. The OPTMBEVM board provides easy
access to the I2C, INT, VDD, and GND lines. The header J2 is depopulated on the EVM by default and its
labeled through hole pads can be used to access the lines. Alternatively, a header can be populated at J2 for
easier access.
Figure 4-12. OPTMBEVM Schematic
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4.3.2 PCB Layout
Figure 4-13 and Figure 4-14 show the top and bottom PCB layers, respectively, of the test board. Figure 4-15
and Figure 4-16 show the assembly drawings of the top and bottom PCB layers, respectively.
Figure 4-13. PCB Top Layer
Figure 4-14. PCB Bottom Layer
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Figure 4-15. PCB Top-Layer Assembly Drawing
Figure 4-16. PCB Bottom-Layer Assembly Drawing
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4.3.3 Bill of Materials
Table 4-3 lists the bill of materials for the OPTMBEVM motherboard.
Table 4-3. OPTMBEVM Bill of Materials
Designator
Quantity
Description
Part Number
Manufacturer
C1
1
CAP, CERM, 1 uF, 10 V, +/- 10%,
X7S, AEC-Q200 Grade 1, 0402
GCM155C71A105KE38D
MuRata
J1, J2, J3, J4, J5, J6, J7, J8
8
PC Pin Terminal Connector
Through Hole Gold 0.017"
(0.43mm) Dia
3121-2-00-15-00-00-08-0
Mill-Max
R2
1
RES, 620, 5%, 0.05 W, 0201
RC0201JR-07620RL
Yageo America
R5, R18
2
RES, 0, 5%, .05 W, AEC-Q200
Grade 0, 0201
ERJ-1GN0R00C
Panasonic
R7
1
RES, 1.5 k, 5%, 0.05 W, 0201
RC0201JR-071K5L
Yageo America
R8
1
RES, 100, 1%, 0.05 W, 0201
ERJ-1GEF1000C
Panasonic
R9
1
RES, 1.00 M, 1%, 0.05 W, AECQ200 Grade 0, 0201
RK73H1HTTC1004F
KOA Speer
R10
1
RES, 47 k, 5%, 0.05 W, 0201
RC0201JR-0747KL
Yageo America
R11, R12
2
RES, 27, 5%, 0.05 W, 0201
RC0201JR-0727RL
Yageo America
R13, R14, R15
3
RES, 4.7 k, 5%, 0.05 W, 0201
RC0201JR-074K7L
Yageo America
R16, R17
2
RES SMD 5.1K OHM 5% 1/20W
0201
CRCW02015K10JNED
Vishay Dale
S1
1
Switch, Tactile, SPST-NO, 0.05A,
12V, SMD
RS-032G05A3-SM RT
C&K Components
U1
1
Socket, DIP-8, 2.54 mm Pitch,
SMT
114-87-308-41-134161
Preci-Dip
1
Low-Capacitance + / - 15 kV ESDProtection Array for High-Speed
Data Interfaces, 2 Channels, -40
to +85 degC, 6-pin SON (DRS),
Green (RoHS & no Sb/Br)
TPD2E001DRST-NM
Texas Instruments
U3
1
Single Output Low Noise LDO,
400 mA, Fixed 3.3 V Output, 1.7 to
5.5 V Input, with Reverse Current
Protection, 5-pin SOT-23 (DBV),
-40 to 85 degC, Green (RoHS &
no Sb/Br)
TPS73633DBVT
Texas Instruments
U4
1
Mixed Signal Microcontroller,
RGZ0048A (VQFN-48)
MSP430F5503IRGZR
Texas Instruments
Y1
1
Crystal, 24 MHz, 10 pF, SMD
ABM3B-24.000MHZ-10-1-U-T
Abracon
Corporation
FID1, FID2, FID3, FID4
0
Fiducial mark. There is nothing to
buy or mount.
N/A
N/A
J2
0
Header, 2.54mm, 5x1, Gold, TH
61300511121
Wurth Elektronik
R4
0
RES, 0, 5%, .05 W, AEC-Q200
Grade 0, 0201
ERJ-1GN0R00C
Panasonic
U2
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5 Troubleshooting
5.1 Microsoft Windows 7 Manual Driver Installation
This section outlines the manual driver installation process. If you are using Windows 7 or if the Windows device
manager shows 2 USB Serial Devices under other devices as shown in Figure 5-1 when the EVM is plugged
in instead of COM ports, please use the following steps to correctly install the USB drivers. If two USB Serial
Device devices show up as COM ports automatically (as is the case with Windows 10), then this section can be
skipped.
Figure 5-1. OPT4001YMNEVM on Microsoft® Windows® 7 With Drivers not Installed
1. Open the device manager.
2. Right click on USB Serial Device and select Properties.
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Troubleshooting
3. Click the Update Driver… button.
4. Click Browse my computer for driver software
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5. Click Let me pick from a list of device drivers on my computer.
6. Select Show All Devices and click the Next button.
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7. Click the Have Disk… button.
8. Click the Browse… button.
9. Navigate to “C:\Users\\Documents\Texas Instruments\Latte\projects\OPT4001\drivers” and
choose MSP430_CDC. Click the Open button.
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10. Click the OK button
11. Select the first USB serial device and click the Next button.
12. Click the Yes button.
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13. The driver should now install properly.
14. Now repeat this process (steps 1 to 13) for the second USB Serial Device. All steps are the same except for
step 2 and step 11. In step 2 make sure to right click the second USB Serial Device. Likewise, on step 11
make sure to select the second USB Serial Device when installing the driver as the following figure shows.
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15. When the driver is installed, you will see the following message.
16. The two USB Serial Device devices should now appear in the device manager under Ports (COM & LPT) as
the following image shows.
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