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599 Menlo Drive • # 100 • Rocklin, CA 95765

Sales / Technical Support  - Tel: (916) 624-8333    Fax: (916) 624-8003

Web: http://www.parallaxinc.com  or  http://www.stampsinclass.com • Email: [email protected]

 1-27-2000, V1.0 • Mfg. by www.

RFDigital.com

 

     

Page 

9

RF MODULES

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, it is not necessary to connect the mode
pin.  Connecting the mode pin to ground or leaving it open has the same result.  The LEDs on the receiver side
can be replaced with NPN transistors to be able to drive relays that can be used to switch high current loads.  Do
not exceed 5 milliamps load for each output.  The address switch settings on both transmit and receive side must
match.

Hook-up Using Switch Mode

Summary of Contents for 27986

Page 1: ...se 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 an...

Page 2: ...9600 baud data into the module The receive module outputs the same data at 9600 baud All RF data processing is done automatically by the modules You cannot send a continuous 9600 baud stream spacing b...

Page 3: ...keep them away from water moisture and direct sunlight The serial input and output pins operate at 5V and 0V logic levels Do not attempt to connect directly to a computer RS232 port as this will damag...

Page 4: ...disallow other students to perform their wireless experiments Mechanical Size 1 75 Inch x 3 25 Inch x 0 4 Inch Environmental Temperature 10c to 60c Electrical Power 5 VDC 0 250 VDC Logic Levels Cmos...

Page 5: ...at 9600 baud but can only transmit between modules at 1200 baud This pin is optional but can be used to automatically pace the data for maximum efficiency This pin should connect to the device that o...

Page 6: ...go high Leaving all 4 address pins disconnected will effectively set the module to address 0 This pin only functions in Switch Mode PIN 14 ADDR1 Input Address Input 1 1 of 4 address input pins 16 diff...

Page 7: ...status of the 4 address pins of the transmitter See table below IMPORTANT OUTPUT DATA BITS AND ADDRESS BITS ARE INVERTED Example The transmitter is in switch mode and 5V is applied to ADDR3 and 5V is...

Page 8: ...esses OUT1 OUT2 and OUT3 of the receiver will reflect the state of the bit positions in transmitted byte The receiver reads its address pins ADDR1 through ADDR4 to verify the received byte is intended...

Page 9: ...ushbutton remote control All inputs including the mode pin are internally pulled low so when in switch mode it is not necessary to connect the mode pin Connecting the mode pin to ground or leaving it...

Page 10: ...SEROUT commands to send and receive 9600 N 8 1 bytes The modules can not send and receive continuous 9600 baud serial data If the Flow Control TXFLO will not be used for sending serial data TXD you mu...

Page 11: ...eiver sends textual data while the Slave device the other BASIC Stamp 2 with Transceiver tries to receive the data properly and display it on a 2 x 16 Serial LCD Module Part 27910 or 27913 Note It is...

Page 12: ...as determined by step ii above the Slave verifies that that packet number is not the same as the previous packet s indicating that a duplicate was received and processes the data of the packet In this...

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