Web Site:
www.parallax.com
Forums:
forums.parallax.com
Sales:
sales@parallax.com
Technical:
support@parallax.com
Office:
(916) 624-8333
Fax:
(916) 624-8003
Sales:
(888) 512-1024
Tech Support:
(888) 997-8267
Professional Development Board (#28138)
The Parallax Professional Development Board (PDB) is high-quality, fully-integrated development platform
for BASIC Stamp
®
, Javelin Stamp™, and SX28AC/DP microcontrollers. A wide variety of typical I/O
(LEDs, LCD interface, buttons, etc.) devices and circuitry are built into the PDB, providing the developer
with an ideal platform for rapid microcontroller project development.
Features
40-pin DIP socket (for BASIC Stamp 2 series and Javelin Stamp modules)
14-pin SIP socket (for BS1-IC)
28-pin “skinny” DIP socket (for SX28AC/DP)
USB, DB-9, BS1, and SX-Key programming connectors
2.1 mm, center-positive connector for DC power
5 volt, 1.0 amp power-supply with power switch
16 discrete LEDs
Five 7-segment (with decimal point), common-cathode LED displays
Parallel LCD interface may be configured in 4-bit or 8-bit mode
Two servo-compatible headers
Two 10 k potentiometers
Audio amplifier with built-in speaker; with switch for external speaker
L293D high-current driver for motors, solenoids, etc.
Eight, normally-open pushbuttons (I/O lines protected, and pulled-up to Vdd via 10K)
Eight DIP switches (I/O lines protected, and pulled-up to Vdd via 10K)
Pulse generator with selectable frequency (1 Hz, 10 Hz, 100 Hz, or 1 kHz)
RJ-11 connector; configurable for X-10 and 1-Wire
®
communications
RS-232 DCE port with MAX232E transceiver
DS1307 (I
2
C
®
) real-time-clock with 3v back-up battery (pre-installed)
Copyright © Parallax, Inc.
Professional Development Board (#28138)
v2.0 9/3/2008 Page 1 of 10
PDB Power and Programming Connections
A)
B)
C)
D)
E)
F)
G)
H)
I)
J)
K)
L)
M)
N)
O)
P)
Q)
R)
S)
T)
U)
Power switch
2.1 mm power connection, center positive, input voltage 6-12 VDC
Serial programming interface, DB-9
BS1-IC, BS2-224, BS2-40 and Javelin Stamp sockets
BS1 Serial Adapter connection
Sixteen blue discrete LEDs
Five blue 7-segment LED displays
Parallel LCD interface with contrast pot (4/8-bit modes supported)
Two servo headers (can also be used for Parallax Serial LCD displays and PING))) sensor)
Two 10K potentiometers
Audio amplifier with volume control (speaker on-board/ext selectable)
L293D high-current quad half-H driver
Eight active-low push-buttons with 5V pull-ups
Eight active-low DIP switches with 5V pull-ups
Pulse generator with 1Hz, 10Hz, 100Hz and 1kHz selectable output
RJ-11 connector for X-10 or 1-Wire I/O
MAX232E RS-232 DCE line driver
2
DS1307 I C real-time clock with 3V battery backup
SX28AC/DP socket
SX-Key/SX-Blitz programming connection
Solderless breadboard for connecting external components
Copyright © Parallax, Inc.
Professional Development Board (#28138)
v2.0 9/3/2008 Page 2 of 10
Questions & Answers
Q:
A:
Q.
A.
Does the PDB replace the NX-1000 boards?
Yes; all the most popular features of the previous NX-1000s – plus more – have been
incorporated into the PDB at a lower cost.
I’m kind of new … can I harm my BASIC Stamp or the PDB by making a wiring or programming
mistake?
The truthful answer is Yes, however, the PDB has been designed with inline resistors connected
to those points where a wiring or programming mistake would normally cause damage. If you’re
new, go slowly and double-check your connections before moving the power switch to ON.
Where do I get technical information on the components used?
You can find technical information on BASIC Stamp, Javelin Stamp, and SX28AC/DP
microcontrollers at www.parallax.com. For other components (i.e., L293D, MAX232E, etc.), an
Internet search (try www.google.com) will help you locate the latest technical information and
application notes from the manufactures of those components.
Can I use PDB to run the StampWorks experiments?
Yes. StampWorks v2.1 was written for the PDB. Most experiments from StampWorks v1.2 and
earlier can also be run on the PDB.
I want to experiment with Dallas/Maxim iButton
®
products; is there anything else I’ll need?
You’ll need a "Blue Dot Receptor" cable.
Can I use the PDB to develop BS1 projects?
Yes!
Do I need the BS1 Serial Adapter to program the BS1-IC?
Yes, there is a separate programming header used to program the BS1-IC.
Can I use the PDB for Javelin Stamp projects?
Yes, the PDB is an excellent development platform for the Javelin Stamp.
Since the SX28AC/DP has its own socket, can I have it installed when I’m using a BASIC Stamp
or Javelin Stamp microcontroller?
Yes – except when using the BS2p40 which uses the SX’s RB and RC connectors for some pins.
What is the VIN terminal, and how do I use it?
The VIN terminal is the input voltage to the PDB (usually 12 volts). This can be used to provide a
high-voltage common for devices like stepper motors that are controlled via the L293D push-pull
driver.
Q.
A.
Q.
A.
Q.
A.
Q.
A.
Q.
A.
Q.
A.
Q.
A.
Q.
A.
CAUTION:
Do not connect any VIN terminal directly to any pin of the BASIC Stamp, Javelin
Stamp, or SX28AC/DP module; doing so will cause damage to or destroy the module. And do
not connect VIN to any of the VDD or VSS terminals as this may damage the voltage
regulator of the PDB.
The purpose of the VIN terminal is to provide +12 volts (the typical input voltage to the PDB)
to external devices like relays, incandescent lamps, and stepper motors that are control via
the L293D push-pull driver.
Copyright © Parallax, Inc.
Professional Development Board (#28138)
v2.0 9/3/2008 Page 3 of 10
Resources and Downloads
You may download the schematic for the PDB free from our website by typing in the product number
(28138) into our search box. Please refer to the PDB schematic for detailed information about each
circuit on the board. For additional information on some of the integrated circuits included on the PDB,
such as the L293D, DS1307, LM386 or MAX232E, please download the manufacturer’s datasheet from
their respective websites. You can also search Google for this information as well as additional
application notes.
Solderless Breadboard
Most experiments will involve components placed in the solderless breadboard. Before the breadboard is
used, power busses should be installed. Using 22-guage solid wire (also suggested for circuit
connections), connect the buss rails as suggested below. By using looped wires to connect the power
busses to Vdd and Vss, one or both can be used as an “emergency switch” to remove power from the
breadboard if required.
Installing Microcontroller Modules
Three sets of sockets are provided that allow the PDB to accommodate the BS1-IC module, the 24 or 40-
pin BASIC Stamp modules, the 24-pin Javelin Stamp module, as well as the SX28AC/DP microcontroller.
The SX28 socket is mechanically separated from the other modules and allows the SX28AC/DP to run
with all BASIC Stamp and Javelin Stamp modules except the BS2p40. The table below lists socket and
electrical compatibility, and which modules can be connected and used at the same time.
BS1-IC
BS1-IC
1
BS2-24
BS2p40
Javelin Stamp
SX28AC/DP
BS2-24
No
No
No
Yes
1
No
No
No
Yes
BS2p40
No
No
No
No
Javelin
No
No
No
Yes
SX28AC/DP
Yes
Yes
No
Yes
1. Includes BS2-IC, BS2e-IC, BS2sx-IC, BS2p24-IC, BS2pe-IC, BS2px-IC
Copyright © Parallax, Inc.
Professional Development Board (#28138)
v2.0 9/3/2008 Page 4 of 10
Microcontroller Module Compatibility
The sections that follow give details on installing the various microcontroller modules compatible with the
PDB. Before proceeding, move the power switch to the OFF position and remove the input power
connection.
Using the BS1-IC Module
To install the BS1-IC, an installed BASIC Stamp or
Javelin Stamp module must be removed. Carefully align
the pins of the BS1-IC module with the SIP socket such
that the BS1-IC components are oriented toward the
solderless breadboard as shown in the illustration at
right. The BS1-IC can be programmed through a
standard serial port when using the BS1 Serial Adapter
(#27111, available separately).
Note: The BS1-IC module may be used in conjunction
with an installed SX28AC/DP micro.
Using a 24-pin BASIC Stamp or Javelin
Stamp Module
To install a 24-pin BASIC Stamp or Javelin Stamp module,
an installed BS1-IC module must be removed. Carefully
align the pins of the 24-pin module noting the Pin 1 dot on
the PDB as shown in the illustration at right.
The 24-pin BASIC Stamp or Javelin Stamp module can be
programmed through a standard serial port. A 24-pin
BASIC Stamp and Javelin Stamp modules may be used in
conjunction with an installed SX28AC/DP micro.
Using the BS2p40 Module
To install a BS2p40 module, an installed BS1-IC module
and the SX28AC/DP must be removed.
Carefully align the
pins of the 40-pin module noting the Pin 1 dot on the PDB
as shown in the illustration at right.
The BS2p40 module can be programmed through a
standard serial port.
CAUTION:
The SX28AC/DP micro
must be removed
before installing and using the BS2p40.
Having both modules installed at the same time could cause an I/O pin conflict that could
lead to damage to one or both of the modules.
Copyright © Parallax, Inc.
Professional Development Board (#28138)
v2.0 9/3/2008 Page 5 of 10
模拟电子
