27980 Parallax Inc, 27980 Datasheet

TRANSMITTER 433MHZ RF 4-SIP

27980

Manufacturer Part Number
27980
Description
TRANSMITTER 433MHZ RF 4-SIP
Manufacturer
Parallax Inc
Datasheet

Specifications of 27980

Frequency
433.92MHz
Applications
Remote Sensors and Triggers
Data Rate - Maximum
19.2 kBaud
Current - Transmitting
10mA
Data Interface
PCB, Through Hole
Antenna Connector
On-Board, Whip
Voltage - Supply
5V
Package / Case
Module
Product
Microcontroller Accessories
Flash
512 KBytes
Timers
10 x 8 bit
Board Size
34.8 mm x 29.46 mm x 7.87 mm
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Features
-
Power - Output
-
Operating Temperature
-
Memory Size
-
Modulation Or Protocol
-
Lead Free Status / RoHS Status
Lead free / RoHS Compliant, Contains lead / RoHS non-compliant
Parallax 433.92 MHz RF Transmitter (#27980)
Parallax 433.92 MHz RF Receiver
General Description
The Parallax 433.92 MHz RF Transmitter allows users to easily send serial data, robot control, or other
information wirelessly. When paired with the matched RF Receiver, reliable wireless communication is as
effortless as sending serial data. The power-down (PDN) pin may be used to place the module into a low
power state (active low), or left floating (it is tied high internally).
Features
Application Ideas
Device Information
Theory of Operation
Short for Radio Frequency, RF refers to the frequencies that fall within the electromagnetic spectrum
associated with radio wave propagation.
electromagnetic fields that propagate the applied signal through space. Any RF field has a wavelength
that is inversely proportional to the frequency. This means that the frequency of an RF signal is inversely
proportional to the wavelength of the field. The Parallax RF modules utilize a frequency of 433.92 MHz,
this works out to be a wavelength of approximately 0.69 meters (2.26 feet, or 7.3e-17 lightyears).
433.92 MHz falls into the Ultra High Frequency (UHF) designation, which is defined as the frequencies
from 300 MHz ~ 3 GHz. UHF has free-space wavelengths of 1 m ~ 100 mm (3.28 ~ 0.33 feet or
1.05e-16 ~ 1.05e-17 lightyears).
©Parallax, Inc. • 433.92 MHz RF Transmitter and Receiver (#27980, #27981) • v1.0
High-speed data transfer rates (1200 ~ 19.2k Baud depending on controller used)
SIP header allows for ease of use with breadboards
Compatible with all BASIC Stamp
As easy to use as simple SEROUT/SERIN PBASIC instructions
Power-down mode for conservative energy usage (longer battery life)
Line-of-sight range of 500 feet (or greater depending on conditions)
Remote Controlled Boe-Bot
Wireless data acquisition
Remote sensors and triggers
®
robot
®
Web Site: www.parallax.com
Forums: forums.parallax.com
Sales: sales@parallax.com
Technical: support@parallax.com
modules (including BS1 and Javelin Stamp) and SX chips
When applied to an antenna, RF current creates
Office: (916) 624-8333
Fax: (916) 624-8003
Sales: (888) 512-1024
Tech Support: (888) 997-8267
(#27981)
1/06
Page 1 of 8

Related parts for 27980

27980 Summary of contents

Page 1

... MHz falls into the Ultra High Frequency (UHF) designation, which is defined as the frequencies from 300 MHz ~ 3 GHz. UHF has free-space wavelengths 100 mm (3.28 ~ 0.33 feet or 1.05e-16 ~ 1.05e-17 lightyears). ©Parallax, Inc. • 433.92 MHz RF Transmitter and Receiver (#27980, #27981) • v1.0 Web Site: www.parallax.com Forums: forums.parallax.com Sales: sales@parallax ...

Page 2

... RSSI (receiver only) Received Signal Strength Indicator. This line will supply an analog voltage that is proportional to the strength of the received signal. ©Parallax, Inc. • 433.92 MHz RF Transmitter and Receiver (#27980, #27981) • v1.0 Function Power Down - active low, pulled high internally so may be left floating Data Output Power – ...

Page 3

... CPU.pulseOut(300, CPU.pin8); (Note: this line assumes that I/O pin 8 is connected to the DATA line on the transmitter) Connection Diagrams Transmitter (#27980) ©Parallax, Inc. • 433.92 MHz RF Transmitter and Receiver (#27980, #27981) • v1.0 Sending several characters can accomplish this, however Receiver (#27981) 1/06 ...

Page 4

... Module Dimensions Transmitter (#27980) ©Parallax, Inc. • 433.92 MHz RF Transmitter and Receiver (#27980, #27981) • v1.0 Receiver (#27981) 1/06 Page ...

Page 5

... DEBUG terminal. 'This code receives at 2400 baud, inverted. SYMBOL SYMBOL Start: ©Parallax, Inc. • 433.92 MHz RF Transmitter and Receiver (#27980, #27981) • v1.0 Sample Tx Code (BS1) 'Sync pulse for the receiver 1/06 Page ...

Page 6

... LED (with proper current limiting resistor) may be connected to the 'BS2 I/O pin 0, this will blink when data is received. 'This code receives at 9600 baud, inverted. x VAR Word y VAR Word DO ©Parallax, Inc. • 433.92 MHz RF Transmitter and Receiver (#27980, #27981) • v1.0 'Sync pulse for the receiver 1/06 Page ...

Page 7

... CPU.delay(25 ©Parallax, Inc. • 433.92 MHz RF Transmitter and Receiver (#27980, #27981) • v1.0 Uart.speed9600, Uart.stop1); { //Sync pulse to help Rx after periods of no //Start char that Rx will look for //Sending 2 words: high byte, low byte //help set spacing ...

Page 8

... RFmoduleRX.java /*** RFmoduleRx.java This code is for simple demonstration of the Parallax 433.92 Mhz RF Reciever (#27980) Connect Javelin I/O pin 7 to the RF Rx module DATA line. Connect +5v (Vdd) to the RF Rx module 5v line. Connect ground (Vss) to the RF Rx module GND line. This code will receive at 9600 baud, inverted. ...

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