4d systems Gen4 lcd cape series User manual

Uncontrolled Copy when printed or downloaded.

Please refer to the 4D Systems website for the latest Revision of this document

Gen4 LCD CAPE Range

4.3”, 5.0” and 7.0” LCD CAPE’s

For the Beagle Bone Black

GEN4-4DCAPE-43 (4.3” Non-Touch)

GEN4-4DCAPE-43T (4.3” Resistive Touch)

GEN4-4DCAPE-43CT (4.3” Capacitive Touch)

GEN4-4DCAPE-50 (5.0” Non-Touch)

GEN4-4DCAPE-50T (5.0” Resistive Touch)

GEN4-4DCAPE-50CT (5.0” Capacitive Touch)

GEN4-4DCAPE-70 (7.0” Non-Touch)

GEN4-4DCAPE-70T (7.0” Resistive Touch)

GEN4-4DCAPE-70CT (7.0” Capacitive Touch)

GEN4-4DCAPE-xxx-SB (Super Bright, All sizes/Touch)

Document Date: 8th March 2017

Document Revision: 1.0

DATASHEET

 
Contents 
 
Description............................................................................................................................. 4 
Features ................................................................................................................................. 4 
Getting Started....................................................................................................................... 5 
1. Requirements.........................................................................................................................................5 
2. How to use the GEN4 LCD CAPE.............................................................................................................5 
3. Changing the brightness (Debian).......................................................................................................... 5 
4. Calibrating resistive touch (Debian) .......................................................................................................6 
EEPROM Details...................................................................................................................... 6 
Hardware Drivers ................................................................................................................... 6 
Display Precautions ................................................................................................................ 6 
Optional Button Board............................................................................................................ 7 
Power Source for 4D CAPE ...................................................................................................... 7 
Display Module Part Numbers................................................................................................. 7 
Cover Lens Bezel –Tape Spec ................................................................................................ 7 
Standard FFC cable specifications .......................................................................................... 8 
Software / Driver Disclaimer ................................................................................................. 8 
Notes ................................................................................................................................... 8 
Schematic Diagram (4D CAPE) ............................................................................................... 9 
Schematic Diagram (4DCAPE Adaptor)................................................................................. 10 
Schematic Diagram (4DCAPE Button Board –OPTIONAL) ..................................................... 11 
Mechanical Details –4.3” (Non-Touch & Resistive Touch) .................................................... 12 
Mechanical Details –4.3” (Capacitive Touch)....................................................................... 13 
Mechanical Details –5.0” (Non-Touch & Resistive Touch) .................................................... 14 
Mechanical Details –5.0” (Capacitive Touch)....................................................................... 15 
Mechanical Details –7.0” (Non-Touch & Resistive Touch) .................................................... 16 
Mechanical Details –7.0” (Capacitive Touch)....................................................................... 17 
Mechanical Details (4DCAPE Adaptor) ................................................................................. 18 
Mechanical Details (4DCAPE Button Board –OPTIONAL –BUILT ON REQUEST ONLY)............ 19 
Specifications ..................................................................................................................... 20 

26. Hardware Revision History (4D CAPE).................................................................................. 22

27. Hardware Revision History (4D CAPE Adaptor) .................................................................... 22

28. Ordering Information.......................................................................................................... 23

29. Legal Notice........................................................................................................................ 24

30. Contact Information............................................................................................................ 24

4D SYSTEMS GEN4 LCD CAPES –BEAGLE BONE BLACK

1. Description

The gen4 LCD CAPE range is specifically designed for

the Beagle Bone Black* (BBB), and provides a 4.3”,

5.0” or 7.0” primary display for the BBB for direct

user interaction and information display.

Available in both Resistive Touch (GEN4-4DCAPE-

xxT), Capacitive Touch (GEN4-4DCAPE-xxCT) and

non-touch (GEN4-4DCAPE-xx) via special request –

the non-touch version may be subject to MOQ.

(xx refers to 43, 50 and 70 accordingly)

The 4DCAPE is not compatible with the previous

Beagle Bone (Beagle Bone White), and can only be

used with the Beagle Bone Black.

The 4DCAPE features an on-board Microchip

AR1021 resistive touch controller (Resistive Touch

version only), which talks to the BBB over I2C. This

enables a robust and reliable resistive touch

platform, compared to previous 4DCAPE models

which used the BBB’s analog inputs, which were

prone to external noise and open source software.

The Capacitive Touch version utilises a Focaltech

capacitive touch controller, which also

communicates over I2C.

The Beagle Bone Black connects directly on to an

adaptor CAPE, which then connects to the display

module using a 30 way FFC ribbon cable, enabling

multiple mounting options. Everything the LCD

CAPE requires such as power and display signals are

provided from the BBB directly, via the Adaptor and

FFC ribbon cable.

The gen4 LCD CAPE features an optional push

buttons connector, providing capability for an

external button board. Please contact Sales

regarding this item, it is a special-order item only.

Mounting of the 4DCAPE is achieved with the 4x

4mm mounting holes present on the Display

Module (Resistive and Non-Touch), enabling

standard screws to fasten the GEN4 4DCAPE as

required, or via the adhesive supplies on the Cover

Lens Bezel which is part of the Capacitive Touch

version.

Note (*): The Beaglebone, Beaglebone Black and

Beagleboard remains the property of

beaglebone.org. All references to the words

Beaglebone, Beaglebone Black, Beagleboard are

licensed under a Creative Commons Attribution-

Share Alike 3.0 license.

2. Features

•4.3”, 5.0” and 7.0” TFT LCD CAPE options for the

Beagle Bone Black

•Available in 3 models, Resistive Touch (GEN4-

4DCAPE-xxT), Capacitive Touch (GEN4-4DCAPE-

xxCT) and Non-Touch (GEN4-4DCAPE-xx) where

xx is 43, 50 and 70.

•480x272 Resolution 4.3” TFT LCD Display, or

800x480 Resolution 5.0” and 7.0” TFT LCD

Display

•7 optional push buttons via external button

board is available on request, enabling LEFT,

RIGHT, UP, DOWN, ENTER, RESET and POWER

functionality. This push button board is only

available on request and is made to order.

•EEPROM CAPE ID selection via DIP switch

•4x 4.0mm Mounting holes on Non-Touch and

Resistive Touch modules, or via adhesive for

Capacitive Touch model.

•RoHS and CE Compliant.

GEN4 4D CAPE Adaptor

GEN4 4D CAPE 4.3” Resistive Touch Display

4D SYSTEMS GEN4 LCD CAPES –BEAGLE BONE BLACK

3. Getting Started

3.1. Requirements

The gen4 LCD CAPE’s are designed to work with the

Debian Operating System supplied for the Beagle

Bone Black. It could however be adapted to work on

other distributions by the User.

The Requirements for use are:

•GEN4 LCD Cape + Adaptor + FFC Cable

•Beagle Bone Black (BBB) with suitable

distribution loaded

•5V DC Supply suitable for the Beagle Bone Black

(using DC Jack), recommended 2A @ 5V.

•A Stylus is recommended for accurate touch,

however is not required.

3.2. How to use the GEN4 LCD CAPE

The following steps should be all that is required to

use the GEN4 4DCAPE:

1. Connect the 4DCAPE Adaptor to the Beagle

Bone Black while the Beagle Bone Black is not

powered.

2. Connect the 30 way FFC cable to the 4D CAPE

Adaptor, and to the 4DCAPE Display. The 30

way FFC connectors are ‘Upper Contact’

meaning the blue stiffener on the FFC cable

should be against the PCB, with the metal pads

on the cable facing upward.

3. If using with other capes on your BBB, ensure

the 4DCAPE is not conflicting pin wise to any

other cape installed.

4. Ensure the EEPROM ID Jumper on the CAPE is

set to a different EEPROM ID to any other

capes.

5. Ensure your Beagle Bone Black is loaded with a

suitable Linux distribution which is compatible

with 4D Systems 4DCAPE’s. Debian is the

distribution shipping with current BBB boards

now, and can be installed onto older BBB’s. If

the distribution you wish to use is not

supporting 4D Systems 4DCAPE’s by default,

the supplied source files can be used, please

refer to our Product Page.

6. Connect a 5V Supply to the DC Jack of the

Beagle Bone Black. It is recommended to use a

2A supply to ensure sufficient supply. By

default, the 4DCAPE requires power via the DC

Jack, as the on-board power management of

the BBB may be overloaded depending on

other systems installed. So, the USB jack will

not supply power to the 4D CAPE unless the

Solder Bridge jumper on the top of the 4DCAPE

Adaptor board, is cut and resoldered.

(Discussed further in a later section)

7. Once power is connected, something should be

displayed on the 4DCAPE a few moments after

it has started to boot. Each distribution will

behave differently and require different input

from the User. It is recommended to have a

keyboard attached while setting the system up,

as login details etc may be required. Some

distributions may prompt for LCD calibration,

while others may prompt for

Username/Password.

For support of the BBB and various distributions,

please seek support from the respective websites

associated with the BBB itself or the distributions –

See Section 5.

A good place to start for information and support

regarding the BBB and various distributions

available, is www.beagleboard.org

This website details the latest firmware images for

the BBB: http://beagleboard.org/latest-images

This website details how to get started with the

BBB: http://beagleboard.org/getting-started

For support regarding the 4DCAPE hardware itself,

please go to the 4D Systems website and either

contact Support directly via a Ticket, or use the 4D

Systems Forum. http://forum.4dsystems.com.au

3.3. Changing the brightness (Debian)

It is possible to change the backlight brightness as

the backlight is PWM controlled.

Please note, these instructions may become

obsolete as new versions of Debian are released, or

if different distributions are used.

One method is to SSH into the Beaglebone Black

from your PC, and set the backlight value that way.

Note this does not persist over restarts, so this

would need to be entered into a startup script if the

setting is required to be set each startup.

At the command prompt, type the following:

# sudo su

# cd /sys/class/backlight/backlight

# echo 50 > brightness

4D SYSTEMS GEN4 LCD CAPES –BEAGLE BONE BLACK

Where 50 represents 50%, this can be changed to

any number from 0 to 100 as required.

The exact path may vary with distributions, so

check the /sys/class/backlight path to see what

backlight file exists.

3.4. Calibrating resistive touch (Debian)

When a distribution is used for the first time with a

4DCAPE, often a LCD calibration application will

start automatically. However, depending on the

distribution in use, this may or may not happen.

Some distributions may not even come with a

calibration application loaded.

For ones that do have the calibration program

loaded by default, and if the calibration is input

incorrectly and it is required to be set again, it can

be generally be started from the ‘Start’ menu.

Note, this may change as newer distributions

become available, or if different distributions are

used, so these instructions may become obsolete or

inaccurate.

4. EEPROM Details

On the 4DCAPE Display Module there is an EEPROM

which the BBB reads and uses to determine which

drivers/modules to load based on overlay files

which exist on that specific distribution.

There is a DIP Switch on the top left corner of the

4DCAPE Display Module, which allow the EEPROM

ID to be set to 4 different values, so 4 different

CAPES can be added to a single BBB if required. Only

1 LCD CAPE can be installed at once however.

The EEPROM ID will change from 0x57 when both

switches are OFF, 0x56 when the left-hand side (A0)

is ON, 0x55 when the right-hand side (A1) is ON, and

0x54 when both are ON.

5. Hardware Drivers

The 4DCAPE features the AR1021 resistive touch IC,

made by Microchip, and a driver is supplied for this

by 4D Systems for use with Linux systems such as

Debian. Communications to the AR1021 are via I2C,

specifically utilising the I2C #1 channel on the BBB.

Please refer to the Schematic Diagram for more

information about its connections.

The 4DCAPE also features the TI TPS61165 backlight

drive IC, which implements a 1-wire

communications protocol between the BBB and the

Driver IC, enabling software commands to be sent

from the BBB rather than PWM signals, to vary the

backlight brightness. This results in lower noise and

a more stable backlight system. A Driver for this is

supplied by 4D Systems for use with Linux system

such as Debian.

The Capacitive Touch version of the 4DCAPE

features a Focaltech Capacitive Touch controller

built into the display. This communicates to the BBB

using the I2C #1 channel. A Driver for this is supplied

by 4D Systems for use with Linux system such as

Debian.

6. Display Precautions

• Avoid having to display the same image/object on

the screen for lengthy periods of time. This will

cause a burn-in which is a common problem with all

types of display technologies. Blank the screen after

a while or dim it very low by adjusting the contrast.

Better still; implement a screen saver feature.

• Moisture and water can damage the display.

Moisture on the surface of a powered display will

cause the electrodes to corrode. Wipe off any

moisture gently or let the display dry before usage.

• Dirt from fingerprint oil and fat can easily stain the

surface of the display. Gently wipe off any stains

with a soft lint-free cloth.

• The performance of the display will degrade

under high temperature and humidity. Avoid such

conditions when storing.

• Do not tamper with the display flex cable that is

connected to the control board. This may affect the

connection between the display and the driving

circuitry and cause failure. Under no circumstances

should the display flex be disconnected from the

PCB and power applied to the PCB, as this could

result in instant failure of the CAPE.

• Displays are susceptible to mechanical shock and

any force exerted on the module may result in

deformed zebra stripes, a cracked display cell and

broken backlight

• Always use the mounting holes (where applicable)

on the module to mount the display.

4D SYSTEMS GEN4 LCD CAPES –BEAGLE BONE BLACK

7. Optional Button Board

The 4DCAPE has the option to use an external

button board, for actions such as up, down, left,

right, enter/return, power and reset, or as required

by the User.

Alternatively, any momentary push buttons can be

attached, as they are simply a connection between

a GPIO and GND to form the button press

connection. 4D Systems provides a button board

which can be used if required, and supplied/sold on

request. It is not offered as part of the module as

standard.

The 4D Button Board for the 4DCAPE is a small PCB

with a row of 7 momentary push buttons on the

front, and a 10 way FFC connector designed for a

10-way ribbon cable to attach to, and then connect

to the 4DCAPE Adaptor board.

The 10 way FFC connectors for the 4D Button Board

are Bottom Contact, meaning the terminals need to

be towards the PCB, and the stiffener needs to be

facing upwards (opposite to the main 30 way FFC

cable to the display).

8. Power Source for 4D CAPE

The 4DCAPE power source comes from the BBB, via

the 4D CAPE Adaptor board which plugs on top of

the BBB itself.

The Adaptor board taps into the VDD_5V bus power

on the BBB, which is connected to the DC Barrel

Jack on the BBB. It will not receive power when the

BBB is powered from USB, as the USB power goes

via the BBB power management IC, which then is

supplied on the SYS_5V bus.

It has been designed this way by default as the

SYS_5V system has finite capabilities, and

depending what else the BBB is doing and what

other CAPES/Devices are connected, there may not

be sufficient power left to supply the 4DCAPE. Also,

if a SB (Super Bright) version of the 4DCAPE is used,

it is very likely the USB power management system

would not supply enough power even if nothing

else was connected. It however is possible to

modify the 4DCAPE Adaptor board to use the

SYS_5V bus, if required.

On the top of the 4DCAPE Adaptor is a Solder

Jumper, which has 3 pads. By default, there is a

track connecting the centre pad to the side marked

VDD_5V. If SYS_5V is required instead, then this

VDD_5V track must be cut between these 2 pads,

and a solder blob be added instead between the

centre pad and the pad marked SYS_5V. DO NOT

have both sides connected to the centre pad at

once, else your BBB may be damaged.

A sharp craft knife, a soldering iron and solder are

required ideally for this modification.

Take care when doing this modification, as

warranty claims will not apply due to damage of the

product while undertaking this modification.

9. Display Module Part Numbers

The following is a breakdown on the part numbers

and what they mean.

Example:

gen4-4DCAPE-70CT-SB

gen4 - gen4 Display Range

4DCAPE - Display Family

70 - Display size (7.0”)

T - Resistive Touch.

CT - Capacitive Touch (with CLB)

SB - Super Bright Display

•For part numbers which do not include T or CT,

these are non-touch variants.

•Cover Lens Bezels (CLB) are glass fronts for the

display module with overhanging edges, which

allow the display module to be mounted

directly into a panel using special adhesive on

the overhanging glass. These are available for

Capacitive Touch only.

10. Cover Lens Bezel –Tape Spec

The perimeter of the CLB display modules features

double-sided adhesive tape, designed to stick

directly onto a panel, enclosure, box etc without

the need for any mounting screws or hardware.

The tape used is 3M 9495LE tape, which uses the

well-known and strong 3M 300LSE adhesive.

The double-sided adhesive has a thickness of

0.17mm once the backing has been removed.

More information on this adhesive can be found on

the 3M website.

http://multimedia.3m.com/mws/media/771683O/

3mtm-double-coated-tapes-9474le-9495le.pdf

4D SYSTEMS GEN4 LCD CAPES –BEAGLE BONE BLACK

11. Standard FFC cable specifications

Between the gen4-4DCAPE-Adaptor and the gen4-CAPE Display Module, the following FFC cable is supplied:

30 Pin Flexible Flat Cable, 150mm Long, 0.5mm (0.02") pitch

Cable Type: AWM 20624 80C 60V VW-1

Heat Resistance 80 Degrees Celsius

Connections on the opposite side at each end (Type B)

Between the gen4-4DCAPE-Adaptor and the gen4-4DCAPE Button Board (when purchased via Sales Dept), the

following FFC cable is supplied:

10 Pin Flexible Flat Cable, 150mm Long, 0.5mm (0.02") pitch

Cable Type: AWM 20624 80C 60V VW-1

Heat Resistance 80 Degrees Celsius

Connections on the opposite side at each end (Type B)

12. Software / Driver Disclaimer

4D Systems has developed this 4DCAPE for the Beaglebone Black. 4D Systems does NOT support any software

associated with the BBB itself, as 4D Systems is not involved with the development or support of the BBB

Operating Systems. It is up to the user to determine which distributions are used on the BBB, and therefore

which are compatible with this CAPE. 4D Systems will supply the source code for the 4DCAPE, which is installed

on the Debian Distribution for the BBB by default, however the source can be used if Users wish to use another

operating system. It will however be up to the User to get this operational. Assistance can be provided on our

Forum. http://forum.4dsystems.com.au

4D Systems is not responsible for issues regarding software or drivers associated with the BBB and the

compatibility with this product. Community software support is available via resources at

www.beaglebone.org/discuss

13. Notes

__________________________________________________________________________________________

4D SYSTEMS GEN4 LCD CAPES –BEAGLE BONE BLACK

14. Schematic Diagram (4D CAPE)

4D SYSTEMS GEN4 LCD CAPES –BEAGLE BONE BLACK

15. Schematic Diagram (4DCAPE Adaptor)

4D SYSTEMS GEN4 LCD CAPES –BEAGLE BONE BLACK

16. Schematic Diagram (4DCAPE Button Board –OPTIONAL)

4D SYSTEMS GEN4 LCD CAPES –BEAGLE BONE BLACK

17. Mechanical Details –4.3” (Non-Touch & Resistive Touch)

4D SYSTEMS GEN4 LCD CAPES –BEAGLE BONE BLACK

18. Mechanical Details –4.3” (Capacitive Touch)

4D SYSTEMS GEN4 LCD CAPES –BEAGLE BONE BLACK

19. Mechanical Details –5.0” (Non-Touch & Resistive Touch)

4D SYSTEMS GEN4 LCD CAPES –BEAGLE BONE BLACK

20. Mechanical Details –5.0” (Capacitive Touch)

4D SYSTEMS GEN4 LCD CAPES –BEAGLE BONE BLACK

21. Mechanical Details –7.0” (Non-Touch & Resistive Touch)

4D SYSTEMS GEN4 LCD CAPES –BEAGLE BONE BLACK

22. Mechanical Details –7.0” (Capacitive Touch)

4D SYSTEMS GEN4 LCD CAPES –BEAGLE BONE BLACK

23. Mechanical Details (4DCAPE Adaptor)

4D SYSTEMS GEN4 LCD CAPES –BEAGLE BONE BLACK

24. Mechanical Details (4DCAPE Button Board –OPTIONAL –BUILT ON REQUEST ONLY)

4D SYSTEMS GEN4 LCD CAPES –BEAGLE BONE BLACK

25. Specifications

ABSOLUTE MAXIMUM RATINGS

Operating ambient temperature ................................................................................................... -20°C to +70°C

Storage temperature .......................................................................................................................... -30°C +80°C

NOTE: Stresses above those listed here may cause permanent damage to the device. This is a stress rating only

and functional operation of the device at those or any other conditions above those indicated in the

recommended operation listings of this specification is not implied. Exposure to maximum rating conditions for

extended periods may affect device reliability.

GLOBAL CHARACTERISTICS BASED ON OPERATING CONDITIONS

Parameter

Conditions

Min

Typ

Max

Units

Supply Current

(5V bus of BBB)

(INCLUDES POWER BBB

USES ALSO – NOTE)

gen4-4DCAPE-43 (Max Brightness)

--

590

--

mA

gen4-4DCAPE-43T (Max Brightness)

--

600

--

mA

gen4-4DCAPE-43CT (Max Brightness)

--

620

--

mA

gen4-4DCAPE-43-SB (Max Brightness)

--

690

--

mA

gen4-4DCAPE-43T-SB (Max Brightness)

--

700

--

mA

gen4-4DCAPE-43CT-SB (Max Brightness)

--

720

--

mA

gen4-4DCAPE-50 (Max Brightness)

--

700

--

mA

gen4-4DCAPE-50T (Max Brightness)

--

710

--

mA

gen4-4DCAPE-50CT (Max Brightness)

--

720

--

mA

gen4-4DCAPE-50-SB (Max Brightness)

--

830

--

mA

gen4-4DCAPE-50T-SB (Max Brightness)

--

840

--

mA

gen4-4DCAPE-50CT-SB (Max Brightness)

--

850

--

mA

gen4-4DCAPE-70 (Max Brightness)

--

980

--

mA

gen4-4DCAPE-70T (Max Brightness)

--

990

--

mA

gen4-4DCAPE-70CT (Max Brightness)

--

1100

--

mA

gen4-4DCAPE-70-SB (Max Brightness)

--

1190

--

mA

gen4-4DCAPE-70T-SB (Max Brightness)

--

1200

--

mA

gen4-4DCAPE-70CT-SB (Max Brightness)

--

1220

--

mA

Display Endurance

Hours of operation, measured to

when display is 50% original

brightness

30000

--

H

Touch Screen Endurance

(Resistive Touch)

Number of touches/hits with a

12.5mm tip at a rate of 2x per

second with 250gf force

--

1M

--

Touches

Slide stylus on screen, 100gf force,

60mm/s speed with a 0.8mm

polyacetal tip stylus pen

--

100K

--

Slides

Touch Screen Transparency

Resistive Touch

82

--

%

Capacitive Touch

90

--

%

Touch Screen Operational

Force (Resistive Touch)

Only use Finger or Stylus, do not

use anything sharp or metal

20

--

100

Gf

CLB Hardness

(Capacitive Touch)

Cover Lens Bezel Glass Hardness

--

6

--

H

4D systems Gen4 LCD CAPE Series User manual

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