Need help - Just want to make a simple switch using RF Modules

[financecatalyst]

Hello everyone.
I have two RF modules and I want to make a switch where the receiver should keep a pin high if and untill it is getting a valid signal from the transmitter. Receiver is driving a 12v Relay using 9013 via 1K.
Currenty the relay is producing flickering. My code is attached.

Can some please try to help?

[aratti]

With the code you have posted, you set high gpio.5 when w1 is 24 and gpio.1 when w1 is 51 then you go to label start and you set gpio to 0, this is why relay flickers

start:                                                          
gpio=0
serin GPIO.2,N2400,["pl65"],w1
  if w1=24 then gpio.5=1
  if w1=51 then gpio.1=1 
  'if w1=90 then gpio.4=1
  'if w1=36 then gpio.0=1
  pause 500
 goto start

Set gpio=0 to the begining of your code, in such a way that is executed at start up only once, than use a condition like :

 
if w1=25 then gpio.5=0
if w1=52 then gpio.1=0

to switch off your relays.

Al

[Jerson]

Use this as your receiver code

Define OSC 4
intcon=0
cmcon0=7
TRISIO=%001100
GPIO=0
w1 VAR byte
prevw1 var byte
Include "modedefs.bas"

@ __CONFIG _INTRC_OSC_NOCLKOUT & _WDT_ON & _PWRTE_ON & _MCLRE_OFF & _CP_ON & _BOD_ON & _CPD_ON & _IESO_OFF & _FCMEN_ON & _WUREN_OFF

start:                                                          
serin GPIO.2,N2400,["pl65"],w1
if w1 <> prevw1 then                    ' new command not same as prev
  prevw1 = w1                             ' update the value of prev command
  gpio = 0
  if w1=24 then gpio.5=1                ' and change the output
  if w1=51 then gpio.1=1 
  'if w1=90 then gpio.4=1
  'if w1=36 then gpio.0=1
  pause 500                                ' you may not need this line now
endif
 goto start

[Now-Started]

Thanks for the answers guys, few questions:
I only have two buttons on Tx as an option. I am sorry if I failed to explain that the process has to work with one button only, i.e. if button 1 is pressed relay one should activate and when it is released relay should stop, same with the button 2 and relay 2.

I added gpio=0 at after start to make sure the relays are off if no valid signal is comming otherwise before that statement relay was just left on.

[aratti]

Your transmitter, when you release the push-botton, should Tx ascii(100) or "d" then reciever will reset to zero both relays

start:                                                          
serin GPIO.2,N2400,["pl65"],w1
if w1=24 then gpio.5=1
if w1=51 then gpio.1=1 
if w1=100 and gpio.1=1 or gpio.5 = 1 then gpio = 0 
goto start

Al.

[financecatalyst]

Problem is that the Tx only gets power while the button is pressed once button is released, power is also removed from the pic. Is there any way I can achieve my goal using an capacitor or somthing at the output in the hardware as I dont seem to figure out an solution with software (Unless someone comes up with somthing I can try on my exsisting setup). I already tried using an 470uF at the output pin + replacing 1K wih an diode. I am having problem with timings now BUT flickering seems to have been absorbed by the capacitor. If possible any sugesstion about the cap values I can try to have instant responses by the receiver PIC?

[mackrackit]

Might be able to do what you want by counting. Keeping track of the last push...

But you will only have to count to one. The count VAR could start at 0. When the button is pushed...
IF COUNT VAR = 0 THEN
TX XYZ
COUNT VAR = 1
ELSE
IF COUNT VAR = 1 THEN
TX ZYX
COUNT VAR = 0

EEPROM may be required...

Something like that