27986 Parallax Inc, 27986 Datasheet

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27986

Manufacturer Part Number
27986
Description
TRANSMITTER 433.92MHZ
Manufacturer
Parallax Inc
Datasheet

Specifications of 27986

Module/board Type
Transmitter Board
For Use With/related Products
BASIC Stamp®
Web: http://www.parallaxinc.com or http://www.stampsinclass.com • Email: stamptech@parallaxinc.com
Sales / Technical Support - Tel: (916) 624-8333 Fax: (916) 624-8003
599 Menlo Drive • # 100 • Rocklin, CA 95765
There are three Wireless RF Modules, Transmitter, Receiver and a Transceiver.
designed to serve as a tool for electronic design engineers, developers, hobbyists and students to perform
wireless experiments. These modules make it easy for any NON RF Experienced developer to add Wireless
RF Remote Control to their project. NO RF Knowledge required. The RF Modules are in a PCB (Printed Circuit
Board) form with a 17 Pin 0.1 Inch spacing header that fits directly into most all prototyping boards. They are
easy to use boards that include encoders, decoders, addressing, RF data processing and even the antenna, in
a simple fully range tested board, that is ready to plug right into your project. Just apply +5VDC, ground, and
the communication pins you require and enjoy hassle free wireless communications.
The Transmitter, Receiver and Transceiver all have 9600 baud serial interfaces and stand-alone, 3 function
switch inputs and outputs. The modules can communicate over distances up to 250 feet. The boards operate
on +5V and easily interface to your Basic Stamp 2 or Basic Stamp 2sx.
Receiver
Transceiver
GENERAL DESCRIPTION
Compatible with:
Single Direction
TRANSMITTER
Part # 27986
433.92 MHz
Send Only
Part # 27987
Part # 27988
Transmitter
Receiver
Transceiver
Send and Receive
Compatible with:
TRANSCEIVER
Bi-Directional
Part # 27988
433.92 MHz
Part # 27986
Part # 27987
Part # 27988
© 1-27-2000, V1.0 • Mfg. by www.RFDigital.com
Transmitter
Transceiver
Compatible with:
Single Direction
Receive Only
Part # 27987
These RF Modules are
RF MODULES
433.92 MHz
RECEIVER
Part # 27986
Part # 27988
Page
1

Related parts for 27986

27986 Summary of contents

Page 1

... Send and Receive Compatible with: Transmitter Part # 27986 Receiver Part # 27987 Transceiver Part # 27988 © 1-27-2000, V1.0 • Mfg. by www.RFDigital.com RF MODULES 433.92 MHz RECEIVER Part # 27987 Single Direction Receive Only Compatible with: Transmitter Part # 27986 Transceiver Part # 27988 These RF Modules are 1 Page ...

Page 2

Two Modes of Operation: Connecting GND to the Mode pin places the module in Switch Mode. Connecting +5V to the Mode pin places the module in Serial Mode. Switch Mode: The transmitter, receiver and transceiver have 4 address pins (labeled ...

Page 3

It is the responsibility of the user to be aware of the regulatory requirements in their area of operation and application. For exact information contact the FCC Office at: Federal Communications Commission 445 12th St. SW Washington DC 20554 (202) ...

Page 4

For best performance position the module boards as high off the ground as possible horizontal position and keep as far away from microprocessors (or wires connected to microprocessors) as possible. High speed switching noise can interfere with reception. ...

Page 5

PIN DESCRIPTION PIN 1: GND: (Input) Ground pin. Connect to power supply ground. PIN 2: +5VDC: (Input) Power Supply pin. Connect to regulated +5VDC, +/- 0.250 VDC. PIN 3: MODE: (Input) Serial/Switch Mode Pin. The Mode Pin, determines if module ...

Page 6

PIN 10: IN3: (Input) Switch Input 3. Internally pulled down. When left open this pin is logic low. When connected to +5VDC this pin is logic high. A logic high on this pin will send a "1" to the receive ...

Page 7

Transmitter = Switch Mode Any logic high +5VDC placed on IN1, IN2 or IN3 of the transmitter will be reflected at the receiver’s OUT1, OUT2 or OUT3, respectively. Logic levels on transmitter and receiver address pins ADDR1 to ADDR4 must ...

Page 8

Transmitter = Serial Mode Serial data is input into the TXD pin of the transmitter at 9600 Use the table below for addressing the receiver’s 4 address bits and the 3 OUT bits. When a serial byte is ...

Page 9

Hook-up Using Switch Mode The following example demonstrates an addressable, three-function pushbutton remote control. All inputs including the mode pin are internally pulled low, so when in switch mode not necessary to connect the mode pin. Connecting the ...

Page 10

Hook-up Using Serial Mode Use the Basic Stamp 2 or BASIC Stamp 2sx’s SERIN and SEROUT commands to send and receive 9600 bytes. The modules can not send and receive continuous 9600 baud serial data. If the ...

Page 11

BASIC STAMP 2 & BASIC STAMP 2SX - SAMPLE CODE Visit our web site for code and documentation updates. Data can be sent and received with these modules simply by using the BASIC Stamp 2 and 2sx’s SERIN and SEROUT ...

Page 12

The second method is based on a Cyclic-Redundancy-Check algorithm. The CRC16 called, uses a sophisticated equation to calculate a checksum that catches 99% of transmission errors and is unaffected by symmetrical data. (If this ...

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