Help needed for a RF Sender Receiver System
Posted: Thu Jan 12, 2012 11:57 am
Dear Forum and dear guys from Matrix Staff.
Following situation is givven.
I build a Sender / Receiver System based on the RF Modules EB063.
8 Sender Units including 4 Buttons placed in a laboratory to call 1 of 4 technicians.
The location of a specific sender is hard coded.
The Code which is sent is a two digit number. First digit is the hard coded location (1 to 8 ). Second digit is the pressed button (1 to 4)
For example 12 is the code for department 1 button 2.
6 Receiver Units are used to give information to the technicians.
The information is:
A call is placed -> Buzzer beeps
Who calls -> LCD shows the department (AV1 - AV8 at line one and the name of the technician at line two
One of 4 colored High Power LEDs shows a color code depending of the name of the technician ( Yellow > Name 1, Green > Name two etc)
After two minutes the LCD and the LED is reset.
Within the 2 minutes showtime a buffer should store new calls to be show after reset of the LCD / LED
Its a kind of many to many system, because one call should be shown on all receivers.
Sender is quite simple:
A PIC 16F88, 4 Buttons, an LED and a RXTX Chip from RF Solutions.
It sends a code dependend of the pressed button .
Circuit works well.
Receiver is a bit complexer:
A Pic 16F887, a 2x16 Char LCD, 4 colored signal LEDs, a piezo buzzer and again a RXTX Chip from RF-Solutions.
Details see the attached PDF.
Most times the circuit works well again, but i have some very strange phenomena.
All Sender units are NOT plugged in (they have no power):
After some hours rhe receiver units show real informations like anyone has pressed a button on a sender unit.
I have build 6 Receiver Systems. Sometimes only one sometimes two or three receivers showing messages.
All coding options in the RFdeclaration part like sync pattern bandwidth etc are used.
Next phenomenon is:
All 8 Sender Units and 6 Receiver Units are active.
All works fine.
After some time the receiver showing messages although no key is pressed on a sender unit.
This builds up.
The only solution is to switch of the power on all receiver and all sender units and start again.
I hope my declarations are not to unknowable and anybody has an idea.
@Matrix Staff
Ben asks in 2006
Greetings from showery germany
Andreas
Following situation is givven.
I build a Sender / Receiver System based on the RF Modules EB063.
8 Sender Units including 4 Buttons placed in a laboratory to call 1 of 4 technicians.
The location of a specific sender is hard coded.
The Code which is sent is a two digit number. First digit is the hard coded location (1 to 8 ). Second digit is the pressed button (1 to 4)
For example 12 is the code for department 1 button 2.
6 Receiver Units are used to give information to the technicians.
The information is:
A call is placed -> Buzzer beeps
Who calls -> LCD shows the department (AV1 - AV8 at line one and the name of the technician at line two
One of 4 colored High Power LEDs shows a color code depending of the name of the technician ( Yellow > Name 1, Green > Name two etc)
After two minutes the LCD and the LED is reset.
Within the 2 minutes showtime a buffer should store new calls to be show after reset of the LCD / LED
Its a kind of many to many system, because one call should be shown on all receivers.
Sender is quite simple:
A PIC 16F88, 4 Buttons, an LED and a RXTX Chip from RF Solutions.
It sends a code dependend of the pressed button .
Circuit works well.
Receiver is a bit complexer:
A Pic 16F887, a 2x16 Char LCD, 4 colored signal LEDs, a piezo buzzer and again a RXTX Chip from RF-Solutions.
Details see the attached PDF.
Most times the circuit works well again, but i have some very strange phenomena.
All Sender units are NOT plugged in (they have no power):
After some hours rhe receiver units show real informations like anyone has pressed a button on a sender unit.
I have build 6 Receiver Systems. Sometimes only one sometimes two or three receivers showing messages.
All coding options in the RFdeclaration part like sync pattern bandwidth etc are used.
Next phenomenon is:
All 8 Sender Units and 6 Receiver Units are active.
All works fine.
After some time the receiver showing messages although no key is pressed on a sender unit.
This builds up.
The only solution is to switch of the power on all receiver and all sender units and start again.
I hope my declarations are not to unknowable and anybody has an idea.
@Matrix Staff
Ben asks in 2006
Is this such a project?what you are doing with flowcode
Greetings from showery germany
Andreas
