4D Arduino Adaptor Shield
Arduino and variant Compatible Shield
DATASHEET
4Display-Adaptor-Shield
** Hardware Revision 2.xx **
Document Date: 30
th
May 2014
Document Revision: 1.3
Uncontrolled Copy when printed or downloaded.
Please refer to the 4D Systems website for the latest Revision of this document
Contents
1. Description ............................................................................................................................. 3
2. Configuration Options............................................................................................................. 4
Header 1 (H1) ......................................................................................................................................... 4
Header 2 (H2) ......................................................................................................................................... 4
Arduino Reset Button (T1) ..................................................................................................................... 4
Jumper 1 (J1) .......................................................................................................................................... 5
Jumper 2 (J2) .......................................................................................................................................... 5
Jumper 3 (J3) .......................................................................................................................................... 5
Jumper 4 (J4) .......................................................................................................................................... 5
4D Arduino Adaptor Shield
3. Schematic Diagram ................................................................................................................. 6
4. Specifications and Ratings ....................................................................................................... 7
5. Legal Notice............................................................................................................................ 8
6. Contact Information ............................................................................................................... 8
4D SYSTEMS
4D Arduino Adaptor Shield – Hardware Revision 2.xx
This Adaptor Shield is also compatible with other
platforms which feature Arduino style headers and
use Arduino Shields, such as the Intel Galileo,
Arduino Due etc.
The 4D Arduino Adaptor is compatible with most
Arduino and clones. Works with 3.3V and 5.0V I/O
Arduino modules, provided a 5V supply exists from
the Arduino itself, or if no 5V supply exists, an
external 5v supply must be connected via the H2
Header, and J2 jumper moved accordingly.
Arduino Libraries are available to download from
the 4D Systems website,
www.4dsystems.com.au
1. Description
**
This Datasheet is for the Hardware Revision
2.xx of the 4D Arduino Adaptor Shield, not for the
Hardware Revision 1 4D Arduino Adaptor Shield.
Please refer to the 4D Arduino Adaptor Shield
product page on the 4D Systems website for the
datasheet on the previous model if required
**
The 4D Arduino* Adaptor Shield (4Display-
Adaptor-Shield) is a simple Arduino Shield
designed to provide a convenient interface to
attach 4D Systems display modules to the Arduino
platform, without having to use jumper wires on
the Arduino headers.
The Arduino Adaptor Shield is included in various
Arduino Module Packs, but can be purchased
separately if a 4D Display Module is not required
or is owned already.
Communication to the 4D Systems Display
Modules is performed via the Arduinos serial port,
and is provided to the user in a simple 5-pin
interface, where a 5 way cable (included in the
Arduino Module Packs) can be attached between
the Shield and the Display Module.
A single digital on the Arduino is utilised for an
external reset for the display, and can be
disconnected if required. Jumpers are provided to
enable selection between different I/O to offer
more flexibility over the REV 1 design. Please refer
to Section 2 for more information.
Power for the display is supplied from the
Arduino’s 5V bus, or via an external source such as
a 4D Programming Cable or 5V power supply.
The 4D Arduino Adaptor Shield is compatible with
the following 4D Systems display modules:
•
•
•
•
•
•
•
•
•
uOLED-xx-G1/G2 modules
uLCD-xx-G1/G2 modules
uLCD-xx-PT modules
uLCD-43 (All versions)
uLCD-xx-PTU modules
uVGA-II/III modules
uLCD-35DT
uLCD-70DT
+ Future models
4D Arduino Adaptor Shield
4D Arduino Adaptor Shield Top
4D Arduino Adaptor Shield Bottom
While older modules from 4D Systems may be pin
compatible, the 4D Arduino Libraries may not
specifically support them.
NOTE (*):
Arduino remains the property of the
Arduino Team. All references to the word Arduino
and Arduino Hardware are licensed under the
Creative Commons Attribution Share-Alike license
©
2014 4D SYSTEMS
Page 3 of 8
www.4dsystems.com.au
4D SYSTEMS
4D Arduino Adaptor Shield – Hardware Revision 2.xx
2. Configuration Options
On the 4D Arduino Adaptor, four jumpers (J1, J2, J3 and J4) have been added to provide flexibility to the users
Arduino project, to enable I/O to be changed or disabled as required, including the power source for the
display.
J1
J2
J3
J4
4D Arduino Adaptor Shield
H2
H1
Header 1 (H1)
Header 1 (H1) is used to connect the 4D Arduino Adaptor Shield to the 4D Systems display module of choice,
using the 5 way cable supplied with the shield. This cable provides 5V, GND, TX, RX and Reset signals to/from
the display and Arduino, allowing them to communicate.
Header 2 (H2)
A 4D Programming Cable/Adaptor connector (H2) has been added which can be used to power the display
module in the case the display being used requires more power than can be provided by the Arduino (for
example if the Arduino is powered off a laptop USB rather than a 5V Jack). If the 4D Programming
Cable/Adaptor isn’t used and an external power supply is, then the RES pin can be used to reset the display
externally, if required. See
J1
below. The power supply source is determined by the
J2
jumper, please refer
below.
NOTE:
The RX and TX Signals from the 4D Programming Cable/Adaptor are
NOT
passed from this header, it is
used to provide additional power only.
Arduino Reset Button (T1)
T1
is a reset button for the Arduino, not for the display. This allows access to the Arduino’s reset button which
may be covered up when a shield in placed on top of the Arduino for a number of the Arduino models.
©
2014 4D SYSTEMS
Page 4 of 8
www.4dsystems.com.au
4D SYSTEMS
Jumper 1 (J1)
4D Arduino Adaptor Shield – Hardware Revision 2.xx
J1
enables the Display Reset to be changed from being triggered from the Arduino on GPIO D4 when in the AR
position, or from the H2 connector by means of an external source, when in the PR position. If the jumper is
connected between the AR pin and the central RES pin, then the display can be reset by setting D4 high in the
Arduino logic, and then low again. If the jumper is connected between the PR pin and the central RES pin, then
the display reset is controlled via the
H2
Connector. This could be switched low by an external circuit,
providing an external method of resetting the display.
Removing the jumper from
J1
entirely will disconnect the displays Reset from the Arduino completely, which
may be valid for some projects.
Note:
D4 is always pulled low to GND via a 4.7K Resistor due to the nature of the reset circuit. So even if the
J1
is disconnected, the Arduino D4 input is always going to have a 4.7K pull down on it. In most cases this should
not affect operation of D4 if it is to be used for something else in a project when
J1
is disconnected, however it
should be noted that this is the case when using this shield.
4D Arduino Adaptor Shield
Jumper 2 (J2)
J2
enables the Power Source for the display to be changed from being powered via the Arduino’s 5V Supply, or
via the
H2
connector. If the Arduino is powered from the Users’ computers USB, some computers cannot
provide enough current for both the Arduino and the Display to be powered off the same USB port, so
auxiliary power can be required. If
J2
is connected between the AR pin and the central PWR pin, then the
display is powered off the Arduino’s 5V supply. If
J2
is connected between the PR pin and the central PWR pin,
then the display is powered off the
H2
connector, via something like the 4D Programming Cable. 5V could also
come from an external power source if desired. Removing the jumper from
J2
entirely will disconnect power
from the display.
Jumper 3 (J3)
J3
enables the Serial signals from the display to be received either onto D0 or D2. D0 on most Arduinos is the
Hardware Serial Port 0 RX Pin. D2 is often used for Software Serial. This allows flexibility for different setups. If
the jumper is connected between the D0 pin and the central RX pin, then the Arduino’s hardware serial port 0
will be connected to the display. In this configuration, programming of the Arduino is not possible without
disconnecting the display, as the USB programming signals for the Arduino will also be received by the display,
which will result is corrupt programming signals being received if the Display transmits anything, resulting in a
failed programming attempt. Disconnecting this jumper will disconnect the Arduino from the Display, allowing
the Arduino to be programmed. If the jumper is connected between the D2 pin and the central RX pin, this will
allow Software Serial (or similar) to be used to communicate to the display. The Arduino should be able to be
programmed successfully when the jumper is in this position without having to remove the display from
H1
due to the display and Arduino not sharing the same serial port as the Arduino’s USB programming.
If desired, a jumper wire can be placed from the central pin of J3, to a completely different pin on the Arduino,
such as D19 on an Arduino Mega, allowing Hardware Serial1 to be used. Jumper wires are not included.
Jumper 4 (J4)
J4
enables the Serial signal to the display to be transmitted from either the Arduino’s D1 or D3 pins. D1 on
most Arduinos is the Hardware Serial Port 0 TX Pin. D3 is often used for Software Serial. Please refer to the
description for J3 above, the same applies for
J4.
If the jumper is connected between the D1 pin and the
central TX pin, then the Arduino’s hardware serial port 0 will be connected to the display. If the jumper is
connected between the D3 pin and the central TX pin, will allow Software Serial to be used to communicate to
the display. Removing the jumper will disconnect the Arduino from the Display.
If desired, a jumper wire can be placed from the central pin of J4, to a completely different pin on the Arduino,
such as D18 on an Arduino Mega, allowing Hardware Serial1 to be used. Jumper wires are not included.
©
2014 4D SYSTEMS
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www.4dsystems.com.au
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